Seminar Schedule

Our group meetings take place in our lab, room MC6334, in the Mathematics & Computer Building (MC), this term normally Wednesdays at 1:00pm. If you are an upcoming student speaker and would like some advice on how to prepare a presentation, see the section on communication skills in my handbook for new grad students here. Also, a subgroup of us is studying deep learning and we have a seminar series on that topic. See here.

Fall 2018

Oct. 15 (Mon) 3:00pm, Ingo Roth (former group member, now at Freie Uni Berlin)
Introduction to compressed sensing for classical and quantum signals

Spring / Summer 2018

Aug. 29 (Wed) 11:00am, QNC1201, Doreen Fraser (Philosophy, UW)
Analogies in quantum theories
Aug. 20 (Mon) 11:00am, Turner Lee Silverthorne
Tsirelson’s Problem and The Word Problem
Aug. 16 (Thu) 12:00pm, Nitica Sakharwade
Toy model for quantum causal structures
Aug. 8 (Wed) 1:00pm Dr. Robert Martin
Finite dilations of quantum channels
Aug. 1 (Wed) 1:00pm, Prof. Karen Yeats (C&O, U. Waterloo)
Field diffeomorphisms in QFT
July 26 (Thu) 1:00pm, Location: QNC1501, Esteban Castro Ruiz (University of Vienna)
Dynamics of Quantum Causal Structures
(this is a joint seminar with the groups of Robb Mann and Eduardo Martin-Martinez)
July 20 (Fri) 3:00pm, Jason Pye and Dr. Marco Letizia
Test runs of their talks at the ICMP conference
July 19 (Thu) 3:00pm, Location: QNC1501, Flaminia Giacomini (University of Vienna)
Spin measurement in relativistic quantum reference frames
(this is a joint seminar with the groups of Robb Mann and Eduardo Martin-Martinez)
July 19 (Thu) 10:30-11:55am, QNC0101, Steven Heidel (Rigetti Computing) and Guillaume Verdon
Controlling a Quantum Computer with Code (Steven) and
A Universal Training Algorithm for Quantum Deep Learning (Guillaume)
July 18 (Wed) 1:00pm, Atmn Patel
Test run of his talk at the ICMP conference
July 10 (Tue) 1:00pm, Maria Quadeer (Univ. of Technology, Sydney)
Minimax quantum state estimation under Bregman divergence
July 4 (Wed) 12:30pm, Nicholas Bornman (University of the Witwatersrand)
Ghosts in Optics
June 15 (Fri) 2:00pm in QNC0101, Prof. Alain Tapp (Univ. de Montreal and Montreal Inst. for Learning Algorithms, MILA)
The Deep Learning Revolution in Artificial Intelligence, what it means and how you can help
June 13 (Wed) 1:00pm, AK
Stone Age tools for Quantum Gravity?
May 23 (Wed) 12:00pm, Dr. Mihai Nica (University of Toronto)
On the complexity of random functions
May 16 (Wed) 12:00pm, Luis Serrano (Udacity)
Understanding neural networks
May 9 (Wed) 1:00pm
Free-wheeling group discussion
May 2 (Wed) 1:00pm, Laura Sberna and Yigit Yargit
Adiabatic Vacuum and the Cosmological Constant Problem

Winter 2018

Apr. 25 (Wed) 11:00am, Prof. Mairi Sakellariadou (King's College London)
Quantum gravity, cosmological models and the gravitational wave background
Apr. 18 (Wed) 1:00pm, Prof. Eduardo Martin-Martinez
The Unruh effect without thermality
Apr. 11 (Wed) 12:00pm, David Layden (MIT)
Quantum sensing, noise, and frequency filtering
Apr. 10 (Tue) 1:30pm, at the IQC, in room QNC1501, David Layden (MIT)
Error-corrected quantum sensing
Apr. 4 (Wed) 1:00pm, Ding Jia
Does the Unruh effect actually exist in Nature?
Mar. 29 (Thu) 2pm, Alejandro Pozas, ICFO, Barcelona, Spain
Artificial Intelligence Augmentation: Catching the wave of Machine Learning to tackle problems in Quantum Information
Mar. 28 (Wed) 1:00pm, Nadine Stritzelberger
1+1 Dimensional inverse spectral geometry
Mar. 21 (Wed) 1:00pm, Jason Pye
Covariant bandlimitation and generalized uncertainty principles
Mar. 21 (Wed) 3:30pm, Rob Spekkes, David Schmid (PI)
Seminar held jointly, in MC6486, with Edu's and Robb's groups
Why initial system-environment correlations do not imply the failure of complete positivity
Mar. 14 (Wed) 1:00pm, Maria Papageorgiou
On the Malament Theorem
Mar. 7 (Wed) 1:00pm, Maria Papageorgiou
Detectors in Spacetime
Feb. 28 (Wed) 1:30pm, Nitica Sakharwade
Paradoxical musings: Ravens and the Thimblerig game
Feb. 21 (Wed) 1:30pm, Nayeli Azucena Rodriguez-Briones
Heat bath algorithmic cooling with elementary thermal operations
Feb. 14 (Wed) 1:30pm, Guillaume Verdon-Akzam
A quantum algorithm to train neural networks using low-depth circuits
Feb. 7 (Wed) 1:30pm, Dr. Marco Letizia
Quantum matter in quantum space(time)
Jan. 31 (Wed), 2pm, Dr. William Donnelly (PI)
How much quantum information is in a particle's gravitational field?
Jan. 22 (Mon), 2:30pm, in room QNC0101, Dr. Elizabeth Crosson (CalTech)
Quantum annealing vs classical optimization
Jan. 18 (Thu), 2:30pm, Prof. Andreas Hilfinger (Univ. of Toronto at Mississauga)
Stochastic models in cell biology: how they fail and why we need them
(This talk will be a colloquium and will take place in room MC5501)
Jan. 17 (Wed), 10:30am, in room MC6460, Prof. Jorma Louko (University of Nottingham, U.K.)
Perpetual motion no-go theorem for Lorentz-violating black holes

Fall 2017

Dec. 6 (Wed), 2pm, Dr. Alvaro Martin Alhambra (PI)
Entanglement fluctuations
Nov. 29 (Wed), 2pm, Aidan Chatwin-Davies (CalTech)
Hilbert space measures and holography
Nov. 22 (Wed), 9am-12pm, Dr. Juergen Gerhard (Maplesoft)
Introduction to coding with Maple
Nov. 20 (Mon), 2pm, Prof. Ali Ghodsi (UW Math)
Aspects of machine learning
Nov. 13 (Mon), 12pm, Dr. Valentina Baccetti (Macquarrie University, Sydney, Australia)
Effects of black hole radiation: horizon avoidance?
Nov. 9 (Thu), 1:30-4:30pm, Dr. Juergen Gerhard (Maplesoft)
Introduction to symbolic computation with Maple
Nov. 8 (Wed), 2pm, AK
Superoscillations
Nov. 1 (Wed), 2pm, Lucas Hackl (Penn State)
Linear growth of the entanglement entropy and the Kolmogorov-Sinai rate
Oct. 25 (Wed), 2pm, Dr. Angelika Fertig (PI)
Quantum Tunneling with a Lorentzian Path Integral
Oct. 19 (Thu), 2pm, Nitica Sakharwade
Bidirectional Teleportation and Dense Coding in the Butterfly network
Oct. 11 (Wed), 2pm, Nadine Stritzelberger
Gravitational closure of matter field equations
Oct. 10 (Tue), 1pm, Koji Yamaguchi (Tohoku University, Sendai, Japan)
Entanglement Beyond Page Curves in Black-hole Evaporation Qubit Model
Oct. 4 (Wed), 10:00am, Dr. Katja Ried, (QIC, University of Innsbruck, Austria)
Fish, robots and free will: what we can learn by building agents that learn for themselves
Oct. 2 (Mon), 2pm, Georgios Styliaris (USC, Los Angeles)
Coherence generating power of quantum dephasing processes
Sep. 21 (Thu), 1:30pm, MC6486, AK, Nicholas Pun and Rob Martin talk in the local number theory seminar
Amplified foreshadowing of jumping champions
Sep. 20 (Wed), 4pm (Sky Room, PI), AK and Eduardo Martin-Martinez give a talk to PI's PSI students.
Current topics of research
Sep. 14 (Thu), 2pm, Guillaume Verdon-Akzam
Qubits from It: Quantum Field Sampling, Compression, and Teleportation
Sep. 7 (Thu), 2pm in PI's Sky Room. AK talks in PI's Cosmology group
Covariant information-theoretic natural ultraviolet cutoff and the CMB
Sep. 1 (Thu), 12pm. (PI Bistro, 2nd floor) AK talks to PI's new PSI students
Overview of current topics of research

Spring / Summer 2017

Aug. 30 (Wed), 10am, in MC5479 Prof. Luis Garay (Universidad Complutense de Madrid)
Gravitational-wave echoes from macroscopic quantum gravity effects
Aug. 18 (Fri), 10:30am, Dr. Chris Ferrie (U. of Tech. Sydney)
The Problematization of Randomized Benchmarking
July 21 (Fri), 10am, MC6460, Mikhail Panine
Ph.D. defense
July 12 (Wed), 2pm, Laurel Stephenson-Haskins (UC Santa Cruz)
Hybrid Inflation and the Spectral Index
June 27 (Tue), 2pm, Prof. Adrian Lupascu (IQC)
Introduction to implementations of quantum annealing, and current work
June 23 (Fri), 2pm, Dr. Fabio Costa (Univ. of Queensland, Australia)
A no-go theorem for superpositions of causal order
June 22 (Thu), 2pm, Prof. Ghazal Geshnizjani (UW,PI)
Getting Super-Excited with Modified Dispersion Relations
June 15 (Thu), 11am, Flaminia Giacomini (Univ. of Vienna, IQOQI))
Quantum systems as reference frames
June 13 (Tue), 12pm, Prof. Vijay Ganesh (UW-ECE)
SMT Solvers for Software Engineering and Security
June 5 (Mon), 2pm, Aidan Chatwin-Davies (CalTech)
A Holographic No-Hair Theorem from the Generalized Second Law for Cosmology
May 31 (Wed), 2:00pm, Dr. Daniel Guariento (PI)
Hamiltonian analysis of the cuscuton

Winter 2017

April 26 (Wed), 3:30pm, Daniel Grimmer
Open dynamics under rapid repeated interaction
Mar. 22 (Wed), 11am, QNC0101, Prof. Mohammad Ansari (Delft University of Technology, the Netherlands)
Entropy measurement in quantum systems
Mar. 21 (Tue), 1pm, Maria Papageorgiou
The 'weight' of entanglement, and the validity limits of semiclassical gravity
Mar. 14 (Tue), 2pm, Guillaume Verdon-Akzam
Maximal entanglement breaking via measurement of quantum fields
Mar. 7 (Tue), 12:30pm, Nayeli Azucena Rodriguez-Briones
Correlation-Enhanced Algorithmic Cooling
Feb. 28 (Tue), 2:30pm, Prof. Jose A. Zapata (UNAM, Mexico and UW)
On holography and gauge degrees of freedom
Feb. 22 (Wed), 11am, room MC6486, Prof. Markus Aspelmeyer (Univ. of Vienna, Austria)
Entanglement through Gravity: crazy but how crazy?
Feb. 15 (Wed), 2:30pm, Prof. Yidun Wan (Fudan University, Shanghai)
Ground State Degeneracies of Topological Orders on Open Surfaces via Anyon Condensation
Feb. 14 (Tue), 2pm, Ding Jia
Natural entanglement cutoff from indefinite causal structure
Jan. 31 (Tue), 2:30pm, Prof. Lorenzo Fatibene (Univ. of Turino, Italy)
Ehlers-Pirani-Schild axiomatics for gravity and extended theories of gravitation
Jan. 16 (Mon), 10am, in MC6460, Prof. Niayesh Afshordi (UW, PI)
Echoes from the Abyss: Evidence for Planck-scale structure at black hole horizons
Jan. 16 (Mon), 1pm, MC5501, Prof. Jorma Louko (Univ. of Nottingham, U.K.)
Smooth and sharp creation of a pointlike source in quantum field theory
Jan. 13, (Fri), 2pm, Jason Pye
Quantum Hamiltonian Complexity, Area Laws and Holography

Fall 2016

Dec. 15, (Thu), 2pm, in MC6460, Guillaume Verdon-Akzam
Master's defense
Dec. 13, (Tue), 2pm, Nayeli Azucena Rodriguez Briones
Quantum Energy Teleportation for Algorithmic Cooling
Dec.8, (Thu), 11am, Paul Tiede
Bow ties in the sky
Dec. 7, (Wed.), 2pm, Hau-tieng Wu (Univ. of Toronto)
When time series analysis meets manifold learning
Nov. 24, (Thu), 10am, Ding Jia
Theories with indefinite causal structure
Nov. 17, (Thu), 10am, Kiran Khosla (Univ. of Queensland and UW)
Testing classical channel gravity with quantum clocks
Nov. 15, (Tue), 12pm, Jason Pye
Information-theoretic ultraviolet cutoffs for quantum field theory
Nov. 10, (Thu), 10am, Dr. Dennis Raetzel (Univ. of Vienna)
Gravitational Properties of Light
Oct. 27 (Thu), 10am, Sasha Agne (IQC)
Observation of genuine three-photon interference
Oct. 26 (Wed), 2:00pm, Dr. Eric Brown (Institute of Photonic Sciences (ICFO), Barcelona, Spain)
Gaussian-passivity: practical limitations on quantum energy extraction
Oct. 14 (Fri.), Prof. Alexander Gutfraind (U. of Illinois, Chicago and Uptake Technologies)
- 2-3pm, in QNC1501
  Mathematical Emergencies: Dynamic and Network-based Methods in Infectious Disease Epidemiology
- 3:30-4:30pm in QNC1501 (Colloquium)
  Math on the frontlines : applications of complex systems methods in
  conflict research
Oct. 11 (Tue), 2pm, Michael Florian Wondrak (Frankfurt Institute for Advanced Studies)
- Unparticle Effects on Black Holes and the Hydrogen Atom
Oct. 6 (Thu), 10am, Markus Mueller (PI, Western University)
An operational approach to spacetime symmetries: Lorentz transformations from quantum communication
Sept. 22 (Thu), 2pm, Emma MacKay
The effective size of a superconducting qubit

Spring/Summer 2016

August 12 (Fri.), 11am, Prof. Ted Jacobson (Univ. of Maryland)
Is the vacuum maximally entangled?
August 11, 10am, MC6486, Jason Pye
Comprehensive seminar
August 10 (Wed.), 11am, Prof. Karen Yeats (Simon Fraser / UW)
Chord diagrams and Dyson Schwinger equations
August 8 (Mon), 9am, Ding Jia, Taylor Zhang, Nicholas Pun
Summer research project presentations: Integration by differentiation, Time-varying bandwidth filtering for the SKA telescope project, Shannon analysis of jumping champions of prime numbers.
August 4 (Thu), 10am, David Layden
Master's defense.
August 3 (Wed.), 2pm, Guillaume Verdon-Akzam
Holographic quantum error correcting codes
July 28 (Thu), 1pm, Robert Jonsson
Ph.D. Defense
July 6 (Wed.), 11am, room QNC 1501, Dr. Valentina Baccetti (Macquarrie University)
Clausius entropy for bifurcate null surfaces and its application to the thermodynamic derivation of the Einstein equations
June 29 (Wed.), 3pm, Aidan Chatwin-Davies (CalTech)
Demystifying Wheeler-de Witt
June 21-24
We are hosting the RQI-N2016 conference at the IQC!
June 20th (Mon.), 11am, Jason Pye and Aida Ahmadzadegan
Test run of conference talks
June 15th (Wed.), 11am, Prof. Eduardo Martin-Martinez
Low energy signatures of Causal sets and other Lorentz invariant Non-Local Theories
June 8th (Wed.), 3:30pm, Alfred Shapere (University of Kentucky)
Quantizations of time crystals
June 3rd (Friday), 2pm, Dr. Stefan Nimmrichter (Singapore National University)
Macroscopicity of Quantum Experiments
June 2nd (Thursday), PSI Master's defenses at PI
11am: Maria Papegeorgiou, On the implementation of a covariant ultraviolet cutoff
2pm: Leilee Chojnacki, A new approach to superoscillations
May 11 (Wednesday), 10am, Guillaume Verdon-Akzam
Black Hole Complementarity: Beyond Semiclassicality
May 5 (Thursday), 11am in room 400 at PI, Dr. William Donnelly (UCSB)
Entanglement of Spacetime

Winter 2016

April 21st (Thursday), 10:30am, room QNC1501, AK talks at the Indian Canadian Research Colloquium
How to integrate by differentiating
April 20th, 10:30am, Prof. Sukhdev Roy (Dayalbagh Educational Institute, Agra, India)
Optical Information processing with natural photoreceptor proteins
April 13th, 11am, Maria Papageorgiou (UW,PI)
On energy conditions and entanglement inequalities
April 6th, 11am, Yasaman Yazdi (UW,PI)
Entanglement entropy in causal set theory
March 23rd, 11am, Daniel Grimmer
Emergence of open dynamics from general repeated interactions, and its applications
March 16:
2:30pm, Prof. José A. Zapata (UNAM, Mexico)
Observable currents
10:00am, Jon Herman, (Pure Math, UW)
On Noether's theorem and the Legendre transform
March 10, (Thursday), 1:30pm, Jason Pye, David Layden, Guillaume Verdon-Akzam
Test runs of March Meeting talks
March 9, 12 noon, Meenu Kumari (UW / WLU)
In search of quantum analogs of classical chaos and synchronization
March 2, 10am, András Molnár (Max Planck Institute for Quantum Optics, Garching, Germany)
Rapid adiabatic generation of Gibbs states
February 24, 4:30pm, Nayeli Azucena Rodriguez Briones (IQC)
Heat-Bath algorithmic cooling with correlated qubit-environment interactions
February 17, 2pm, Naoki Watamura (UW / Nagoya University, Japan)
Introduction to entanglement entropy of gauge fields and its boundary condition
February 17, 11am, Eric Hanson (McGill)
Landauer's principle in repeated interaction systems (slides)
February 10, 12:30pm, Yongmin Cho (Chinese Academy of Sciences, Lanzhou)
Abelian Decomposition of Einstein’s Theory
February 3, 11am, Guillaume Verdon-Akzam
Asymptotically limitless quantum energy teleportation.
January 20, 11am, Alvaro Alhambra (University College London)
On quantum thermodynamics
January 13 (Wed.), 11am, Prof. Jorma Louko (University of Nottingham)
Low energy Lorentz violation for high-energy mode field dispersion

Fall 2015

December 15, 10:30am (PHYS352), Cohl Furey
Ph.D. defense
November 18, 11am, Dr. Electra Eleftheriadou (IQC)
How to amplify perfectly (just not every time)
November 16, 4pm, David Layden and Nayeli Rodriguez (IQC)
Indirect quantum control. Strong local passivity.
November 12, 5pm, AK talks to PM-AM-C&O Club
How to integrate by differentiating and other wild new math inspired by physics and engineering.
November 4, 11am, Dr. Eric Brown (Barcelona)
What does it mean for half of an empty box to be full?
October 27, 2pm, Simon Foreman (Stanford)
The effective field theory of cosmological large scale structure
October 14, 11am, Natacha Altamirano (UW,PI)
Continuous quantum measurements and feedback
October 7 (Wednesday), 11am, Dr. Josh Combes (UW, PI)
Times They Are A-Changin’: characterizing time dependent sources and gates
September 23 (Wednesday), 11am, Dr. Chris Ferrie (University of Sydney, Australia)
Self-guided quantum systems
September 16 (Wednesday) 11am, Katja Ried (UW, PI)
On causality in quantum theories
Sept. 12 (Saturday) 5:00pm, Mikhail Panine (at Perimeter Institute)
Numerical spectral geometry
Workshop Noncommutative Geometry and Physics
Sept. 12 (Saturday) 4:15pm, AK (at Perimeter Institute)
Infinitesimal spectral geometry
Workshop Noncommutative Geometry and Physics
Sept. 1 (Tuesday), 2pm, Aidan Chatwin-Davies (CalTech)
How to retrieve a qubit from a black hole

Spring/Summer 2015

August 25th, (Tuesday), 2pm, Pablo Rodriguez-Lopez (CNRS, Paris XI)
Stochastical approach to the Casimir effect
August 12th (Wednesday), 2pm, Prof. Benni Reznik (Tel Aviv University)
Superoscillations underlying remote state preparation for relativistic fields
August 12th (Wednesday), 10am, Prof. Masahiro Hotta (Tohoku University, Sendai, Japan)
The fall of black hole firewalls
August 11 (Tuesday), 2pm, Dr. William Donnelly (UCSB)
Entanglement entropy and the electromagnetic field
July 14 (Tuesday), 4pm, Prof. Gaetano Fiore (Universita' di Napoli and INFN)
Laser-driven acceleration mechanisms of plasma electrons, and the slingshot effect
June 24 (Wednesday), 10:30am, Prof. Valerio Scarani (National University of Singapore)
Quantum Randomness
June 23 (Tuesday), 4pm, Lucas Hackl (Penn State)
Entangled spin network states in Loop Quantum Gravity
June 18 (Thursday), 12pm, Dr. Mercedes Martin-Benito (Radboud Universiteit Nijmegen, Netherlands)
Gauge-invariant formulation and hybrid quantization of flat FRW cosmologies with linear perturbations
June 11 (Space Room, PI), 2:30pm, AK
How to (path) integrate by differentiating
June 9, 2pm, Dr. Bruno Hartmann (Humboldt University Berlin)
Operationalization of Basic Observables in Classical and Relativistic Dynamics
May 19, 4:30pm, Prof. Luis Garay (Universidad Complutense de Madrid)
Do stars die too long?
May 19, (MC6496), 2pm, Mikhail Panine
Comprehensive exam
May 13, (Time room, PI), 11am, Achim speaks at Perimeter Institute conference Information-Theoretic Foundations for Physics
What if Nature is Bandlimited by a Planck-scale cutoff?
May 12, 2pm, Prof. Silke Weinfurtner (University of Nottingham)
Hydrodynamic simulation of black holes
May 7, 11am, Guillaume Verdon-Akzam
High-dimensional Quantum Key Distribution using Orbital Angular Momenta of Photons
May 5, 2pm, Robert Jonsson
On Quantum Speed Limits

Winter 2015

Apr. 27, 11am, Prof. Sabine Hossenfelder (Nordita, Stockholm)
Analog Duality
Apr. 22, 11am, Mikhail Panine
On heat kernel methods
Apr. 15, 11am, Prof. Chris Bauch
Mathematical modelling of coupled disease-behaviour dynamics, with application to childhood vaccine scares
Apr. 1, 11am, Emma McKay (IQC)
Random State production in quantum chaos
Mar. 26 (Thursday), 10am, Nayeli Rodriguez (IQC)
Achievable polarization for Heat-Bath Algorithmic Cooling
Mar. 18, 10:30am, Prof. Eduardo Martin-Martinez
The Anti-Unruh effect, and weakness of firewalls
Mar. 11, 11am, Prof. Roger Melko (UW, PI)
Quantum Monte Carlo and Entanglement Entropy
Mar. 4, 11am, Yasaman Yazdi, (UW,PI)
Firewall Phenomenology with Astrophysical Neutrinos
Feb. 18, 2pm, Prof. Masahiro Hotta (Tohoku University, Sendai, Japan)
On Quantum Energy Teleportation
Feb. 18, 11am, Mehdi Saravani (UW, PI)
Dark matter from spacetime nonlocality
Feb. 18, 10:30am, David Layden
Test run of talk at APS meeting.
Feb. 11, 11am, Guillaume Verdon-Akzam
Quantum energy teleportation in squeezed vacua
Feb. 4, 11am, Guillaume Verdon-Akzam
Quantum energy teleportation and the controlled Hawking process
Jan. 28, 11am, Robert Jonsson
Matrix product states
Jan. 21, 11am, Guillaume Verdon-Akzam
On the recovery of quantum information from black holes
Jan. 15, 11am, Prof. Jorma Louko (Univ. of Nottingham)
Superconducting circuit boundary conditions beyond the Dynamical Casimir Effect
Jan. 14, 11am, Dr. Casey Myers (Univ. of Queensland, Australia)
Vibrationally Enhanced Quantum Transport
Jan. 7, 11am, Prof. Jorma Louko (Univ. of Nottingham, U.K.)
How long does it take Unruh de Witt detectors to thermalize?
Achim in Australia and New Zealand for lectures, talks and conferences (at UWA, U. Sydney, UQ, RQI-S2014 and CosPa2014).
September 24, 1:30 pm: Marius Oltean
Cosmological perturbations in antigravity
September 11, 2:00 pm: Oleg Kabernik
Quantum reference frames and the Poincaré symmetry
September 3, 2:30 pm: Alejandro Pozas (Perimeter Scholars International (PSI) of the Perimeter Institute for Theoretical Physics (PI))
Hot electrons as the source of photocurrent in graphene

Spring/summer 2014

August 29, 11:00 am: Prof. Shih-Yuin Lin (Chang Hua University, Chang Hua and Academia Sinica, Taipei)
Unruh effect under non-equilibrium conditions
August 27, 2:30 pm: Aidan Chatwin-Davies (California Institute of Technology),
AdS/MERA and beyond
August 25, 2:30 pm: Daniel Huemmer (Universities of Waterloo and Heidelberg),
On Unruh-DeWitt detectors
August 14, 2:00 pm: Eduardo Martin-Martinez,
Review of quantum energy teleportation
August 13, 2:30 pm: Jeremy Sakstein (Cambridge University, U.K.)
Testing theories of modified gravity using astrophysics
August 6, 2:30 pm: Nathan Killoran (University of Ulm, Germany),
Extracting entanglement from identical particles
July 11, 1:30 pm: William Donnelly and Jason Pye,
On the continuous wavelet transform
July 9, 2:00 pm: Shane Farnsworth, (University of Waterloo, PI),
Predictions of non-commutative geometry: the sigma field
July 2, 2:30 pm: Daniel Guariento (Universidade de São Paulo and PI),
Evolution of cosmological black holes: exact solutions, accretion and scalar fields
July 2, 11:00 am: William Donnelly,
On methods for calculating entanglement entropy
June 24, 10:00 am: Robert Martin (University of Cape Town),
On the dilation of quantum channels
June 4, 2:30 pm: Cohl Furey (University of Waterloo, PI),
Charge quantization from a number operator
May 23, 2:30 pm: Hans Westman (Instituto de Física Fundamental, (CSIC), Madrid, Spain),
Signature change, dark energy, and Cartan gravity with dynamical symmetry breaking
May 7, 10:00 am: Prof. Fedele Lizzi (University of Napoli, Italy),
Quantum spacetime, the view from below

Winter 2014

April 30: Nick Menicucci (University of Sydney),
Continuous-variable cluster states: powerful extensible cluster states
April 24, 10:00 am: Angus Prain (Bishop's University, Sherbrooke, Quebec),
Building a black hole in the bathroom or otherwise
April 23: Shane Farnsworth (University of Waterloo, PI),
Applications of non-associative geometry
April 16: Aharon Brodutch (Institute for Quantum Computing (IQC)),
Weak measurements and the two-state vector formalism
April 2: Achim Kempf,
New Dirac delta function methods for perturbative expansions in quantum field theory and beyond
March 26: Prof. Barry Sanders (University of Calgary),
Evolutionary algorithms for hard quantum control
March 19, 2:30 pm: Guillaume Verdon-Akzam (McGill University),
On the Unruh vacuum
March 19, 11:00 am: Prof. William Kinney (State University of New York (SUNY) Buffalo),
Review of the BICEP2 results and their implications for inflationary cosmology and quantum gravity
March 14, 12:45 pm: Prof. Enrique Solano (University of the Basque Country, Spain),
New perspectives in quantum simulations
March 12: Marvellous Onuma-Kalu (University of Waterloo, PI),
Mode invisibility and single photon detection
March 5: Siavash Aslanbeigi (University of Waterloo, PI),
The causal set - continuum correspondence
February 26, 2:30 pm: Hilary Carteret
Computationally accessible bounds for the negativity using replicas
February 19, 2:00 pm: Philipp Hoehn (PI),
Quantization of systems with temporally varying discretization
February 12, 2:30 pm: Siavash Aslanbeigi (University of Waterloo, PI),
Causal set d'Alembertians: continuum limit, spectrum, stability, and a new regulator for QFT
February 12, 10:30 am: Josh Combes (University of New Mexico),
Limitations of quantum amplifiers
February 5: Cohl Furey (University of Waterloo, PI),
Generations: three prints, in colour
January 29, 2:30 pm: Nosiphiwo Zwane (University of Waterloo, PI),
Propagation of particles in the discrete spacetime of causal set theory
January 22, 2:30 pm: Bianca Dittrich (PI),
Diffeomorphism symmetry in the discrete and perfect discretizations
January 15: Prof. Jorma Louko (University of Nottingham),
Particle detectors near and beyond black hole horizons
January 8: Nick Menicucci (University of Sydney, Australia),
Acceleration-assisted entanglement harvesting and rangefinding

Fall 2013

December 18, 10:30 am: Mikhail Panine
Jet spaces and nonlinear PDEs
December 13, 10:30 am: Juan Jose Garcia-Ripoll,
Detecting majorana fermions and topological order in optical lattices
December 12, 2:30 pm, Time Room at PI: Achim Kempf,
Curvature in terms of entanglement
December 12, 12:00 pm: Eduardo Martin-Martinez,
Topics in quantum information II
December 11, 10:30 am: Jason Pye,
From generalized uncertainty and commutation relations to sampling in QFT
December 4, 1:30 pm: Eduardo Martin-Martinez,
Topics in quantum information I
December 4, 10:30 am: Daniel Huemmer,
Weak measurements
November 27, 10:30 am: Robert Jonsson,
Quantum theory of amplifiers
November 25, 4:00 pm: Aristide Baratin,
Research proposal test run: combinatorial methods for quantum gravity
November 20, 10:30 am: Achim Kempf introduces three topics for journal club:
Quantum amplifiers, Weak measurements, and Uncertainty and sampling
November 13, 10:30 am: Robert Jonsson,
Review of a new paper by Pitkovski et al on gravitational decoherence
November 11, 2:00 pm: Maite Dupuis,
Applications of Poisson Lie group
November 6, 10:30 am: Michael Hartz,
Introduction to C* algebras
November 4, 2:00 pm: Prof. Florian Girelli,
Introduction to Poisson Lie groups
October 30, 9:30 am:
Eric Brown's qualifier from 11:00 am
October 23, 10:30 am: Ghazal Geshnizjani,
Can non-local or higher derivative theories provide alternatives to inflation?
October 21, 2:00 pm: Aristide Baratin,
A hint of group field theory
October 16, 10:30 am: Yasaman Yazdi (PI),
A spacetime approach to computing entropy
October 9, 10:30 am, MC 6334: Latham Boyle (PI),
The standard model from non-commutative geometry; and the non-associative extension
October 2, 10:30 am, MC 6331: Katja Ried (PI),
Causal models: classical and quantum
September 20, 2:00 pm, MC 6334: Prof. Tim Ralph (University of Queensland, Australia),
Relativistic quantum optics
September 18, 10:30 am, MC 6334: Aida Ahmadzadegan (University of Waterloo); William Donnelly, Test runs of Banff conference talks

Visitors

Prof. Timothy Ralph (University of Queensland)
Nick Menicucci (University of Sydney)

Spring/summer 2013

August 19, 2:00 pm, MC 5158:
Master's thesis defense by Aidan Chatwin-Davies.
Examiners: Girelli, Afshordi, and Kempf. Chair: Scott.
August 14, 10:30 am: Chris Sutherland,
On the role of locality in epistemic models
August 12, 10:00 am, MC 5158:
Master's thesis defense by Eric Webster.
Examiners: Nayak, Koenig, and Achim Kempf.
August 7, 10:30 am: Fabio Grazioso (University de Montreal),
Uses of NV defects in diamonds: qubits, entanglement, single photon sources and QKD
July 31, 10:30 am: Eric Webster,
High energy modifications of blackbody radiation and dimensional reduction
July 10, 10:30 am:
Journal Club and report on RQI-N from Robert
June 26, 10:30 am: Michael Rouben,
Scalar field perturbations in a bounce cosmology
June 19, 2:00 pm, Gravity Room at PI: Robert Jonsson,
Quantum signalling with Unruh-DeWitt detectors
June 12, 10:30 am: William Donnelly,
Euclidean Maxwell theory in curved spacetime
June 5, 2:00 pm, meet in the atrium at PI: Robert Martin (University of Cape Town)
Representation theory of symmetric operators
May 30, 4:00 pm: John Klauder (University of Florida)
Completing canonical quantization
May 29, 10:30 am: Xian Ma (IQC)
Envariance: environmental assisted invariance
May 6, 3:30 pm: Aidan Chatwin-Davies,
On the vacuum and path integrals

Winter 2013

April 29, 3:30 pm: Razieh Pourhasan (PI),
On holographic entanglement entropy
April 22, 3:30 pm, Mike & Ophelia Lazaridis Quantum-Nano Centre (QNC) B201: Dr. William Donnelly
Einstein-aether inflation
April 8, 3:30 pm: Aron Wall, (UC Santa Barbara),
Maximin surfaces and holographic entanglement entropy
April 1, 3:30 pm:
Journal Club
March 25, 3:30 pm: Yigit Subasi (University of Maryland),
Equilibration in the strong coupling regime
March 18, 3:30 pm:
Projects update
March 4, 3:30 pm:
Journal Club
February 25, 3:30 pm: Aharon Brodutch (IQC),
Quantum discord
February 11, 3:30 pm:
Journal Club
February 4, 3:30 pm: Hilary Carteret (PI),
Some semi-classical relativistic effects that may be relevant to R-QIP using Unruh- squeezed states
January 28, 4:30 pm: Eugenio Bianchi (PI),
Black hole entropy from graviton entanglement
January 21, 3:30 pm:
10 minute summaries

Fall 2012

December 14, 10:00 am:
Journal Club
December 7, 9:00 am: Luis Garay (Universidad Complutense de Madrid),
Black holes: to be or not to be, that is the question
November 30, 10:30 am: Mehdi Saravani,
Empty black holes, firewalls, and the origin of Beckenstein-Hawking entropy
November 23, 10 am: Eric Webster,
Introduction to prolate spheroidal wavefunctions
November 16, 10:30 am:
Journal Club
November 9, 10:00 am: Mikhail Panine,
Progress report: numerical exploration of inverse spectral geometry for a set of surfaces in R3
November 2, 10:00 am: Eduardo Martin-Martinez,
Processing quantum information with relativistic motion of atoms
October 26, 10:45 am: Robert Jonsson,
Causal femion systems and the fermionic projector
October 19, 11:00 am: Aidan Chatwin-Davies,
A fully-covariant natural ultraviolet cutoff in inflationary spacetimes
October 12, 10:00 am:
Journal Club

Spring/summer 2012

August 23, 3:00 pm: Dr. Ghazal Geshnizjani,
Scale-invariant perturbations without inflation, yes or no?
August 23, 12:00 pm, Research Advancement Centre (RAC) 2009: Thomas Blasi (Harvard),
Coherent control of charge states in coupled quantum dots
August 22, 11:00 am: Dr. Robert Koenig,
Limits on classical communication over quantum channels and their cryptographic use
August 15, 11:00 am, Dr. Ghazal Geshnizjani,
Survey of issues in inflationary cosmology
July 13, 11:30 am: Nick Menicucci (University of Sydney),
Acceleration-assisted entanglement harvesting
July 4, 11:00 am: Jaques Pienaar (University of Queensland),
Quantum experiments in gravitational fields may lead to more than just decoherence
June 22, 2:00 pm: William Donnelly (University of Waterloo, University of Maryland),
On the entanglement entropy of gauge fields
June 21, 2:00 pm: David Aasen, Aidan Chatwin-Davies, and William Donnelly,
Test runs of their conference talks next week.
June 21, 11:00 am: Sebastian Probst (Karlsruhe Institute of Technology, Germany),
Towards an erbium quantum memory for superconducting qubits
June 19, 11:00 am: Laurel Haskins-Stephenson (UCSC), two half-length talks on
Introduction to holography and Aspects of spectral geometry
June 18, 11:00 am: Lucas Hackl (PI),
Symplectic geometry, constrained systems and shape dynamics
June 15, 4:00 pm: Spiros Michalakis (CalTech),
Introduction to quasi-adiabatic evolution
June 13, 2:30-3:00 pm: Mercedes Martin-Benito (PI),
Introduction to loop quantum cosmology,
June 13, 3:15-3:45 pm: Sammy Ragi (University of Nottingham),
The nature of correlations in ghost imaging
June 6, 2:00 pm, University de Montreal:
Achim Kempf talks at Workshop on Geometry of Eigenvalues and Eigenfunctions.
May 31, 11:00 am: Tejal Bhamre (Princeton University),
On colored graphs
May 25, 3:00 pm, Sky Room at PI: Achim Kempf talks in PSI seminar,
How spacetime could be simultaneously continuous and discrete, in the same way that information can be
May 24, 2:00 pm: Prof. John Klauder (University of Florida),
Affine quantum gravity: review and recent results
May 24, 11:00 am: David Aasen,
On the spectral geometry of graphs
May 18, 2:00 pm: Eduardo Martin-Martinez,
The Unruh-Dewitt detector model and its use in relativistic quantum information

Winter 2012

April 25, 11:00 am:
Group discussion of projects
April 19, 11:00 am: Siavash Aslanbeigi (University of Waterloo and PI),
On vacuum energy in cosmology
April 5, 11:00 am: Chris Ferrie,
Negativity of the Wigner function is necessary for magic state distillation
April 2, 10:00 am: Robert Martin (University of Cape Town),
Reproducing kernel Hilbert spaces of square integrable functions
March 30, 2:30 pm: Robert Martin (University of Cape Town),
Covariant sampling theory in cosmology
March 29, 11:00 am: David Rideout (UC San Diego),
Testing Quantum Theory at large length/time scales with satellites - towards the scale of spacetime curvature and beyond
March 26, 10:00 am: Maite Dupuis (ENS Lyon, France),
On harmonic oscillators in loop quantum gravity
March 22, 11:00 am: Eric Brown (Department of Physics and Astronomy, University of Waterloo),
On quantum discord
March 19, 10:00 am:
Group discussion of projects.
March 15, 11:35 am: Markus Mueller (PI),
Concentration of measure for quantum states with a fixed expectation value
March 12, 9:00 am: Eduardo Martin-Martinez,
Review of current research projects in relativistic quantum information
March 8, 10:00 am: Kiril Datchev (Massachusetts Institute of Technology (MIT)),
On inverse spectral geometry
March 5, 10:00 am: Aidan Chatwin-Davies,
Review of a paper by Datchev & Hezari on spectral geometry IV
February 17, 10:30 am: Robert Jonsson,
Review of a paper by Datchev & Hezari on spectral geometry III
February 10, 10:30 am: Mikhail Panine,
Review of a paper by Datchev & Hezari on spectral geometry II
February 3, 10:30 am: Aidan Chatwin-Davies,
Review of a paper by Datchev & Hezari on spectral geometry I
January 27, 10:30 am: Eric Webster,
On the asymptotics of superoscillations
January 25, 9:30 am: David Bruschi (University of Nottingham),
How cavities' motion affects entanglement
January 20: Jeff Hnybida (PI),
BF-theory and spin foam models III
January 12: Jeff Hnybida (PI),
BF-theory and spin foam models II

Fall 2011

December 15, 11:00 am: Jonathan Ziprick (PI),
Relating loop quantum gravity and general relativity
December 9, 11:00 am: Mikhail, Aidan and Robert,
15 minute applied functional analysis seminars.
December 7, 11:00 am: Yufang Hao,
The Shannon sampling theorem: Fourier and functional analytic approach
November 30, 4:30 pm: Cedric Beny (University of Hannover, Germany),
On entanglement renormalization
November 30, 11:00 am: Aharon Brodutch (Macquarie University, Sydney, Australia),
Polarized photon qubits in curved space-time
November 23, 11:00 am: Eric Webster,
Properties of entanglement entropy
November 18, 11:00 am: Alexander Gutfraind (University of Texas at Austin),
Aspects of network theory
November 17, 2:30 pm, MC 5136: Alexander (Sasha) Gutfraind (University of Texas at Austin),
Computational problems on complex networks
November 16, 11:00 am: Aidan Chatwin-Davies,
On the partial trace over subsystems II
November 11, 11:00 am: Aidan Chatwin-Davies,
On the partial trace over subsystems I
November 9, Jeff Hnybida (PI),
BF-theory and spin foam models I
November 3, 10:00 am: Eduardo Martin-Martinez (University of Madrid),
Aspects of relativistic quantum information
November 2, 11:00 am: Hans Westman (University of Sydney and PI),
Localized q-bits in curved spacetimes
October 27, 3:30 pm: (refreshments in PHY151), 4pm: Colloquium in PHY151, Prof. John Klauder, (University Florida),
Affine quantization
October 26, 3:00 pm: Spiros Mikalakis (CalTech),
Stability of frustration-free Hamiltonians II
October 24, 11:00 am: Aron Wall (UC Santa Barbara),
On black hole thermodynamics
October 24, 4:00 pm, Time Room at PI: Spiros Michalakis (CalTech),
Stability of frustration-free Hamiltonians I
October 19, 10:00 am: Chris Ferrie,
On the sampling of probability distributions
October 19, 11:00 am: Federico Piazza (University de Paris 7),
Spontaneous symmetry probing states
October 12, 11:00 am: Prof. John Klauder (University of Florida),
On affine quantization methods
October 7, 10:30 am: Prof. Naoki Saito (UC Davis),
New methods for radar and sonar
October 6, 3:30 pm: MC 5136, Prof. Naoki Saito (UC Davis), Harmonic/wavelet analysis on graphs and networks with applications
October 5, 11:00 am: Prof. Naoki Saito (UC Davis), Laplacian Eigenfunctions that do not feel the boundary: theory, computation and applications
October 4, 9:00 am-12:00 pm: Achim Kempf,
Sampling of curvature II
October 3, 9:00 am-12:00 pm: Achim Kempf,
Sampling of curvature I
September 28, 9:00 am-12:00 pm: Achim Kempf,
Sampling theory
September 21, 3:30 pm: MC 5136:
Master's defense by Eduardo Brandao.
September 21, 11:00 am: Achim Kempf,
Generalized uncertainty relations II
September 19, 3:00 pm: in MC 5136:
PhD defense by Yufang Hao
September 16, 4:00 pm: Yufang Hao:
Test run of his PhD defense presentation
September 14, 11:00 am: Achim Kempf,
Generalized uncertainty relations I

Visitors

Prof. John Klauder (University of Florida)
Prof. Naoki Saito (University of California (UC) Davis)
Spiros Michalakis (California Institute of Technology)
Sasha Gutfraind (University of Texas)
Aron Wall (UC Santa Barbara)
Eduardo Martin-Martinez (University of Madrid)

Spring/summer 2011

August 25, 11:00 am: David Aasen (McGill University),
Creating a spin polarized wave packet
August 24, 11:00 am: Tejal Bhamre (IIT Bombay & Princeton),
Jet detection algorithms using Haar wavelets
August 18: M. Nica, E. Bembenek, and M. Panine
presentations at Applied Math undergraduate research conference.
August 18, 11:00 am:
M. Nica, E. Bembenek, and M. Panine give more trial runs of their conference talks.
August 17, 11:00 am:
E. Bembenek and M. Panine give trial runs of their conference talks.
June 22, 11:00 am: Prof. J. Emerson,
Ontological models for quantum theory
June 15, 11:00 am: E. Bembenek,
On spikes in superoscillatory waves
June 8, 11:00 am: R. Pfeifer (University of Queensland and PI),
Simulating anyons in condensed matter physics
June 2: 11:00 am: Mihai Nica,
Models of competitive games and transitive versus nontransitive rankings II
May 25: 11:00 am: L. Stephenson Haskins, and I. Roth,
Aspects of infinitesimal spectral geometry
May 18, 11:00 am: M. Panine,
Dielectic Microresonators: applications, perturbative treatment and finite element simulation
May 11, 11:00 am: M. Nica,
An evolutionary algorithm for leg dynamics,
and Eric Bembenek,
On stratified fluid flows
May 10, 10:00 am-5:00 pm:
Summer project planning
May 4, 2:00 pm:
Group discussion of research topics III
May 4, 11:00 am: M. Nica,
Models of competitive games and transitive versus nontransitive rankings I
May 3, 11:00 am:
Group discussion of research topics II
May 2, 1:00 pm:
Group discussion of research topics I

Winter 2011

April 26, 3:00 pm: Achim Kempf gives Institute for Quantum Information and Matter (IQI) colloquium talk at CalTech, Spacetime could be simultaneously continuous and discrete in the same way that information can
April 8, 12:00 pm: Achim Kempf talks in Gravity Seminar at UC Santa Barbara, Spacetime could be simultaneously continuous and discrete in the same way that information can
March 30, 10:00 am: Eduardo Brandao, Gauge invariant perturbations on the 2-sphere
March 24, 11:30 am: Olaf Dreyer, On quasinormal modes of black holes
March 4: Achim Kempf gives seminar in Department of Mathematics at University of Toronto, Infinitesimal inverse spectral geometry and applications in mathematical physics
March 2: Alessio Orlandi (University of Bologna and Istituto Nazionale di Fisica Nucleare (INFN), Italy), A Glimpse of the Kodama vector
February 28: Jay Olsen (University of Queensland, Australia), Timelike entanglement in the quantum vacuum
February 24: Achim Kempf gives colloquium at the Santa Fe Institute, Spacetime could be simultaneously continuous and discrete, in the same way that information can be
February 23: Achim Kempf gives colloquium at Los Alamos National Lab (LANL), Spacetime could be simultaneously continuous and discrete, in the same way that information can be
February 22: Achim Kempf gives colloquium at the LANL, High Tc superconductivity and the Casimir/van der Waals effect
February 2: F. Piazza (University de Paris 7), Modifying gravity in the Infrared by imposing an 'ultra-strong' equivalence principle
January 26: Andy Randono (PI), Torsional Skyrmions
January 19: Loic Markley (University of Toronto), Superresolution: theory and practice
January 12: Florian Conrady (PI), Space as a low-temperature regime of graphs

Fall 2010

December 20: Achim Kempf talks at Heidelberg University, Germany
December 17: Achim Kempf talks at Albert Einstein Institute (AEI), Potsdam, Germany
December 1: Alioscia Hamma (PI), Locality of dynamics and the structure of correlations in quantum many body systems
November 4, 2:30 pm, MC 5136: Frederic Schuller (Einstein Institute, Golm, Germany), TBA
October 29, 11:00 am: Alexander Gutfraind (LANL), On the resilience of networks
October 27: Mikhail Panine, two-part talk, On gravitational lensing/On the Helmholtz equation in dielectric cavities
October 20: Olaf Dreyer, Internal relativity: quantum gravity without quantization
October 14, MC 5136: Prof. Almut Burchard (University of Toronto), Convergence and smoothing properties of Steiner symmetrizations and other simple rearrangements
October 13, 9:00 am: mini workshop on entanglement entropy in quantum field theory.
- Speakers: Miyake, Piazza, Casini, Myers, Smolkin, and Sinha.
October 6, 4:00 pm, Bob Room at PI: Prof. John Klauder (University of Florida), Proposal for divergence-free quantization of covariant scalar fields
October 6: Robert Martin, (UC Berkeley), On a covariant UV cutoff in cosmology
September 29: Eduardo Brandao, On H. Nielsen's random dynamics
September 22: Chris Ferrie, Optimal quantum state estimation
September 17, 11:00 am: Piero Nicolini (University of Frankfurt), Evaporating black holes in the presence of a minimal length
September 17, 2:00 pm: Benjamin Niedner, Hausdorff dimension of particle paths inquantum spacetime
September 17, 2:30 pm: Martin Sprenger, Neutrino oscillations in a minimal length model
September 13: Achim Kempf talks at CITA/PI meeting in Toronto.

Visitors

Prof. Almut Burchard (University of Toronto), October 14
Frederic Schuller (AEI), October 26 - November 9
Robert Martin (UC Berkeley): October 4-9 and 11-14
Prof. John Klauder (University of Florida): October 5-8
Alexander Gutfraind (Los Alamos National Laboratory, U.S.)
Piero Nicolini (University of Frankfurt): September 15-October 1
Benjamin Niedner, Martin Sprenger: September 11-18

Spring/summer 2010

August 1-15: Achim Kempf teaches at a summer school in Ftan, Switzerland.
July 7: Mathieu Cliche, On the propagation of quantum information in field quanta
June 30, 3:00 pm: Tejal Bhamre, On inverse spectral geometry
June 30, 11:00 am: David Aasen, On quantum fluctuations
June 29, 6:00 pm: Group dinner at Mandarin Restaurant
June 29, 11:00 am: Olaf Dreyer, Review of Sakharov's induced gravity
June 24, 2:00 pm: Eduardo Brandao, Aspects of spectral geometry II
June 23, 11:00 am: Michel Elnaggar, MIMO systems
June 16: Eduardo Brandao, Aspects of spectral geometry
June 2: Miok Park, Holographic normalization of asymptotically flat spacetimes
June 1, 11:30 am, Physics (PHY) 235: Achim Kempf gives Physics Seminar (PHYS 10) lecture to physics undergraduates on spacetime and information
May 26: Matt Coles (McMaster University), TBA
May 19: Robert Pfeiffer (University of Queensland, Australia), Interacting Fibonacci anyons and defects in conformal field theory
May 7: Andrzej Dragan (University of Warsaw, Poland), On the black hole information paradox
May 5: Cohl Furey (PI), Unified theory of ideals

Visitor

Prof. Robert Brout (University Libre de Bruxelles)

Winter 2010

April 28: Olaf Dreyer, On emergent gravity
April 7: Andy Randono (PI), TBA
March 29: Hans Westman (University of Sydney, Australia), On the parallel transport of qubits
March 24: Chris Ferrie, Bayesian probability in quantum theory
March 10: Piero Nicolini, Evaporating black holes in the presence of a minimal length
February 24: Olaf Dreyer, Internal relativity, early universe cosmology IV
February 10: Olaf Dreyer, Internal relativity, early universe cosmology III
February 3: Olaf Dreyer, Gravity as an entropic force - discussion of Verlinde's paper
January 27: Eduardo Brandao, A review of spectral geometry
January 10: Achim Kempf talks at Department of Mathematics, University of Goettingen.

Visitor

Prof. Robert Brout (University Libre de Bruxelles)

Fall 2009

Achim Kempf traveling in Australia and Europe
November 17: Olaf Dreyer, Internal relativity, early universe cosmology II
November 11: Olaf Dreyer, Internal relativity, early universe cosmology I
October 21: Radu Ionicioiu (Hewlett-Packard Lab, Bristol, U.K.), Generalized parity measurements: an entanglement resource
October 14: Nick Menicucci, (PI): Entangling power of an expanding universe
October 7, 9:00 am: Kamil Bradler (McGill University): What can the Unruh effect say about the additivity of the classical and quantum capacity of cloning channels?
September 16, 2:00 pm, Bob Room at PI: Achim Kempf talks in PI colloquium, Spacetime can be discrete and continuous, in the same way that information can
September 9, Achim Kempf talks at King's College in the University of Western Ontario, On physics and consciousness
September 2, Angus Prain (Scuola Internazionale Superiore di Studi Avanzati (SISSA), Italy), On superoscillations

Spring/summer 2009

August 24: Achim Kempf talks at Emergent Gravity IV conference at UBC, (Vancouver), Spacetime could be simultaneously discrete and continuous, in the same way that information can
August 20, MC 5136: Chuck, Peter, Raymond and Simon talk in the summer students' research conference.
August 13: Oliver Winkler, Market efficiency
August 12: Chuck Bronson, Filtering for time-varying bandwidths
August 6, 11:00 am: Oliver Winkler, Bonds, stocks, options: how much should you pay for them? VII
August 5: Peter Forbes, On the Casimir effect in high temperature superconductors
August 5: Raymond Su, On the design of radar signals
July 29: Oliver Winkler, Bonds, stocks, options: how much should you pay for them? VI
July 23: Oliver Winkler, Bonds, stocks, options: how much should you pay for them? V
July 22 Mathieu Cliche, Extracting entanglement from the vacuum
July 15: Oliver Winkler, Bonds, stocks, options: how much should you pay for them? IV
July 8: Oliver Winkler, Bonds, stocks, options: how much should you pay for them? III
July 6, 3:00 pm: Simon Foreman, On the Casimir effect in high temperature superconductors
June 24: Oliver Winkler, Bonds, stocks, options: how much should you pay for them? II
June 17: Oliver Winkler, Bonds, stocks, options: how much should you pay for them? I
June 11, 2:30 pm, PI Bistro: Achim Kempf, Information theoretic UV cutoff of spacetime II
June 4, 2:30 pm, PI Bistro: Achim Kempf, Information theoretic UV cutoff of spacetime
May 27, 11:00 am: Mathieu Cliche, Information flow in quantum fields
May 20, 11:00 am: Elias Okon, On Berry phases
May 14, 11:00 am: Cedric Beny (Centre for Quantum Technologies, National University Singapore): Joint measurability and preserved observables
May 13, 11:00 am: Hongbao Zhang (PI), S-matrix without local quantum field theory
May 12, 2:00 pm, MC 5136: Rob Martin (UC Berkeley) gives departmental seminar, Symmetric operators and sampling theory

Fall 2008/winter 2009

Achim Kempf on sabbatical in Europe and Australia.

Spring/summer 2008

August 13: Mathieu Cliche and Jeff Li give test runs of their conference presentations
August 6, William Donnelly, On entanglement in quantum field theory
July 31, 2:00 pm: Angus Prain, Semi-classical gravity and backreation
July 9, Yufang Hao: Stability of reconstruction in non-uniform sampling
July 2: Achim Kempf, On the Casimir effect in High Tc superconductors II
June 18: Achim Kempf, On the Casimir effect in High Tc superconductors I
June 11: Hongbao Zhang, Generalized second law, covariant entropy bound and the cosmological constant problem
June 4: Yufang Hao, Introduction to rate-distortion theory
May 28, Sabine Hossenfelder (PI), Observables of quantum gravity at the LHC
May 15, 2:00 pm, Alice Room at PI: Prof. John Klauder, Affine quantum gravity: a different view on a difficult problem
May 14, 10:00 am, Physics (PHYS) 352: Prof. John Klauder (University of Florida), Path integration: an historical slice
May 9, 10:00 am, MC 5158: William Donnelly's Master's defense
May 8, 10:00 am, MC 5136: Angus Prain's Master's defense
May 7, 9:30 am, MC 5136: Rob Martin's PhD defense

Winter 2008

April 30, 11:30 am: Cedric Beny, Basics of superconductivity II
April 28, 11:30-12:30 pm, Bob Room at PI: Achim Kempf talks at PI conference Quantum Information and Graph Theory: emerging connections. Title: A Unifying View of Graph Theory in Quantum Field Theory (work with D.M. Jackson and A. Morales).
April 25, 2:00 pm: Alejandro Borbonet, Bekenstein bounds and spectral geometry
April 23, William G. Davis Computer Research Centre (DC) 1304: Graduate student research conference (Achim Kempf acts as judge).
April 22, 11:00 am: Iraida Carnero, Noncommutative geometry and integrable models
April 16: Franklin Marquezino, Simulations of quantum walks
April 9, 11:00 am, Robert Martin, Time-varying bandwidths and invariant subspaces of differential operators
April 2: Renato Portugal, Quantum channel capacity and the Holevo bound
March 26: Cedric Beny, Basics of superconductivity I
March 5: Yufang Hao, Classical Shannon channel capacity
February 27, 4:00 pm, Bob Room at PI: Cedric Beny, Unsharp pointer observables and the structure of decoherence
February 13, David Ostapchuk, Entanglement creation in the fermionic Unruh effect
February 6: Renato Portugal, On quantum random walks
February 4, 2:30 pm, PHYS 352: Prof. Paul Smrz (University of Newcastle, Australia), special seminar jointly hosted with Department of Physics and Astronomy, 5D gravity and minimum length
January 30: Tom Waterhouse (PI), Cosmic variance of Ω
January 23, 11:00 am: Easwar Magesan, Identification of correctable codes via twirling
January 16: Cedric Beny, On the structure of decoherence

Visitors

Prof. Robert Brout (University Libre de Bruxelles)
Alejandro Borbonet
Iraida Carnero
Prof. Paul Smrz
Harold Steinacker

Fall 2007

December 9-10: group takes part in PI workshop Quantum Information Theory in Quantum Gravity.
December 8: Achim Kempf, Rob Martin and Cedric Beny talk at Canadian Mathematical Society (CMS) winter meeting in London, Ontario, in the special session on Quantum Information Theory in Quantum Gravity.
December 4: 11:00 am: Joe Henson (PI), On covariant discretizations II
November 27, 10:30 am: Federico Piazza (PI), On entanglement entropy in spacetime regions
November 20, 9:00 am: Joe Henson (PI), On covariant discretizations I
November 13: 10:00 am: Hongbao Zhang talks on entanglement entropy and related issues.
November 5-9: Achim Kempf co-organizes workshop at PI, Experimental Search for Quantum Gravity
November 3, 3:00 pm, MC 5158: Prof. Ahmed Zayed (DePaul University, Chicago) talks on sampling theory in colloquium.
October 23, 10:00 am: Angus talks on superoscillations and quasilattices
October 16, 10am in MC 6091: Chris Ferrie review of a paper with J. Emerson.
October 11: Achim Kempf talks in Physics at UBC.
October 9, 10:00 am, MC 6091: John Madore (Paris), Aspects of noncommutative geometry
October 6: Rob Martin and Yufang Hao talk at AMS meeting in Chicago.
September 17-21: Achim Kempf talks at QFEXT07 conference in Leipzig, Germany.
September 4-7: Achim Kempf co-organizes conference at University of Wuerzburg, Germany, Initial Conditions in Cosmology

Visitors

Prof. John Madore (Paris)
Prof. Ahmed Zayed (Chicago)
Prof. Robert Brout (University Libre de Bruxelles)
Prof. Bill Unruh (University of British Columbia)
Prof. Jens Niemeyer (Wuerzburg)

Spring/summer 2007

August 5-18: Achim Kempf teaches at summer school on quantum information, Ftan, Switzerland.
July 17: Yufang Hao, comprehensive exam.
July 10, 11:30 am: William Donnelly report on Loops'07 conference.
July 3, 11:30 am: Rob Martin report on SAMPTA07 conference.
June 25-30: William Donnelly talks at Loops'07 conference in Morelia, Mexico.
June 16-23: Achim Kempf at GRAVTUM1 conference.
June 6-8: Yufang Hao talks at IEEE Canadian workshop on information theory, Edmonton.
June 1-6: Achim Kempf and Rob Martin talk at SAMPTA07 conference.
May 29, 11:30 am: Cedric report on Zakopane Winter School III.
May 15, 11:30 am: Cedric report on Zakopane Winter School II.
May 1, 11:30 am: Angus report on Zakopane Winter School I.
April 24, 11:00 am, Bob Room at PI: Mauro Francaviglia, (University of Torino, Italy): Dark energy as a curvature effect in nonlinear theories of gravity
April 19, 2:00 pm, Alice Room at PI: Mauro Francaviglia, The geometry of Barbero Immirzi connections
April 17, 11:30 am: William, Entanglement entropy in loop quantum gravity
April 10, 10:00 am, MC 5136: Cedric, comprehensive exam.
March 27, 11:30 am: Robert Brout, on random walks.

Visitors

Prof. Mauro Francaviglia (University of Torino)
Prof. John Klauder (University of Florida)
Prof. Robert Brout (University Libre de Bruxelles)

Winter 2007

March 20, 10:00 am: Bernhard Bodmann, Quantum communications and an optimization problem for POVMs
March 13, 11:30 am: Angus Prain, On the effective action of QFT in curved space, (to be confirmed).
February 27, 11:30 am: Alejandro Morales, Intro to the effective action and graphs in QFT (5)
February 14, 11:30 am: Group photo opportunity.
February 13, 11:30 am: Achim Kempf, Intro to the effective action and graphs in QFT (4)
February 6, 11:30 am: Achim Kempf, Intro to the effective action and graphs in QFT (3)
January 30, 11:00 am, Bob Room at PI: Serge Winitzki, Quantum gravity and the conditions at the birth of the universe
January 30, 9:00 am: Achim Kempf, Intro to the effective action and graphs in QFT (2)
January 26, 9:00-10:30 am, Bob Room at PI: Florian Koch, Intro to Quantum Groups (V)
January 25, 2:00 pm: Florian Koch talks in PI's quantum gravity seminar.
January 25, 9:00-10:30 am, Bob Room at PI: Florian Koch, Intro to Quantum Groups (IV)
January 23, 11:30 am: Achim Kempf, Intro to the effective action and graphs in QFT (1)
January 22, 9:00-10:30 am, Bob Room at PI: Florian Koch, Intro to Quantum Groups (III)
January 19, 9:00-10:30 am, Bob Room at PI: Florian Koch, Intro to Quantum Groups (II)
January 18, 9:00-10:30 am, Bob Room at PI: Florian Koch, Intro to Quantum Groups (I)

Visitors

Prof. Robert Brout (University Libre de Bruxelles)
Florian Koch (University of Munich)
Serge Winitzki (University of Munich)
Mauro Francaviglia (University of Torino)
Wenfeng Chen

Fall 2006

December 8, 9:00 am (broadcast to Wuerzburg): Rob Martin, Sampling theoretic UV cutoff on curved spacetime
December 6, 11:00 am: Alejandro, Gravitational entropy and Fisher information
December 4, 3:30pm: Wenfeng Chen, Wavelets II
November 27, 9:00 am, MC 5158: Cedric's comprehensive seminar, Transmission of observables through quantum channels
November 24, 2:00 pm: Cedric gives test run of his comprehensive seminar.
November 20, 9:00 am (via video conference from Wuerzburg): Tim, Loop quantum cosmology II
November 13, 3:30pm: Wenfeng Chen, Wavelets I
November 7, 2:00 pm (via video-conference from PI): A. Green, Dark matter in cosmology
November 6, 9:00 am: Cedric Beny, Introduction to loop quantum cosmology
October 30, 4:00 pm: Wenfeng Chen, From Fourier to wavelets
October 16, 9:00 am: Angus, Introduction to quantum cosmology
October 9: No seminar due to Thanksgiving.
October 2: Hauke Haseler (IQC), Continuous quantum information and entanglement
September 25: Cedric, Locking quantum information
September 20: David, A model for mode creation in cosmology
September 13: Larissa Lorenz (IAP, Paris), Two field inflation
September 5-8: Achim Kempf and Justin Khouri run international workshop at PI, Planck scale cutoff in expanding spacetimes.
- Schedule
- Video of the conference talks
September 1, 11:00 am: Tom Waterhouse (University of British Columbia), Chameleon inflation

Visitors

Wenfeng Chen
Alejandro Borbonet
Prof. Robert Brout (University Libre de Bruxelles)

Spring/summer 2006

August 16: Chris, test run of his summer conference talk
August 2: Chris, Introduction to phase space quantization
July 5: Cedric, On operator quantum error correction and information flow in measurements
July 5: Jonathan Oppenheim (Cambridge University), Negative, uncommon, and private information
June 21: Angus, Double special relativity
June 7: David, The cosmic microwave background II
May 31: Adeel, On quantum fluctuations
May 24: Joseph, Discrete vs. continuous randomization of quantum systems
May 17: David, The cosmic microwave background I
May 12: Bernhard, On quantum noise
May 10: John Madore (visitor from University Paris Sud), The fuzzy sphere
May 3: Cedric, On loop quantum cosmology
April 26: Yufang, Spectral methods in DEs

Winter 2006

April 5: Rob: On sectional curvature bounds
March 29: William: On the holographic principle
March 22, 11:00 am, Bob Room at PI: Discussion of WMAP results
March 8: Sasha, On the genetic code, as a code
February 22: Cedric, Aspects of Shannon information and data compression
February 15: Sasha, Mechanisms leading tyo power laws
February 8: Sasha, Examples of power laws
February 1: Rob, Sampling theory on curved space
25 January: William, Review of the gauge principle

Visitors

Prof. Robert Brout (University Libre de Bruxelles, Belgium)
Alessio Notari (McGill University)
Alejandro Borbonet (University of Mato Grosso, Brazil)

Fall 2005

29 November: discussion with audio/visual people re lab.
15 November: Cedric, POVM versus von Neumann measurements II
8 November: Cedric, POVM versus von Neumann measurements I
1 November: William reports on his summer research, with Richard Cleves, on mutually unbiased bases and related issues.
25 October, MC 5158: Oliynyk (Potsdam), Newtonian Limit for Perfect Fluids
18 October: Sasha talks on mathematical models in epidemiology.
11 October: David continues his report on the conference in Brazil.
26 September, 2:00 pm: David reports on the conference in Brazil.
20 September, 3:00 pm: Joseph reviews decoherence vs. dissipation.
13 September: Joseph reviews decoherence.
7 September: Jonathan Oppenheim (Cambridge University), Locking information in black holes

Spring/summer 2005

30 April-9 May: Achim Kempf in Europe.
16 May: Group discussion over lunch.
24-26 May: Achim Kempf and Sasha at Origins conference at McMaster.
30 May: Rob gives test run of his talk at CMS meeting.
31 May: Achim Kempf and Sasha talk at Origins workshop in Hamilton.
4-6 June: Achim Kempf organizes special session at CMS meeting.
6 June: Rob talks at CMS conference.
13 June: Organizational meeting and general discussion.
16 June, 1:30 pm, MC 5158A: Achim Kempf talks on QCD in Sci. Comp./Comp. Math group.
20 June: AG, AS, RM and YH report on CMS conference.
29 June: Rob reports on CMS conference, reviewing the adiabatic theorem in quantum computing.
30 June, 1:30 pm, MC 5158A: Achim Kempf talks on QCD in Sci. Comp./Comp. Math group.
4 July: Yufang talks on Symmetric vs self-adjoint operators and sampling I
11 July: Yufang talks on Symmetric vs self-adjoint operators and sampling II
18 July: David on Quantum dissipative systems
25 July, 2:00 pm, Bob Room at PI: David, Inflation and violation of Bell inequalities
26 July, 1:30pm, MC 5136: Sasha, Genetic algorithms
2 August: Cedric, Decoherence
8 August: Cedric finishes decoherence and Yufang and Adeel talk on self-adoint extensions and sampling, and vacuum fluctuations.
11 August: Adeel and Yufang present at the summer student conference.
12 August, 1:00 pm: Cedric finishes on noiseless subsystems.
August 12, 1:30 pm: Discussion on decoherence with visitor Dr. Jens Eisert (Potsdam).
13-27 August: Achim Kempf in Europe.
29 August: Joe reviews quantum to classical transition.
8 September: Joe reviews decoherence.

Visitors

B. Bodmann (University of Texas), end of May
Prof. Robert Brout, (University of Bruxelles), mid-July to mid-August

Winter 2005

January 31: Sasha, From crystals to quasicrystals
February 4: David, Growing lattices in cosmology
February 10: Rob, Aspects of sampling theory I
February 14: Rob, Aspects of sampling theory II
February 21: Rob, Aspects of sampling theory III
February 28: Sasha, Euler-Maclaurin
March 3: Achim Kempf talks at Guelph Math student club (1:00 pm) and at Guelph Math Colloquium, (3:00 pm).
March 7: Sasha, Euler Maclaurin
March 21: Sasha reports on his visit to CRM Montreal.
March 28: David, Coherent states
April 4: David, Squeezed states
April 25, MC 5136: Sasha, Path integration

Visitors

Prof. J. Patera (CRM and University of Montreal), mid-January
Prof. R. Brout (University Libre de Bruxelles), end of January/early February and all of April
G. Mangano (University of Naples, Italy and Syracuse, New York), mid-March
Prof. R. Easther (Yale University), mid-March

Fall 2004

September 20: group is at COSMO-04.
September 27: conference reviews.
October 4: conference reviews.
October 11: holiday (Thanksgiving).
October 12: Achim Kempf talks at Guelph.
October 18: Larissa on backreaction.
October 25: Sven on backreaction.
November 1: David on introducing aspects of inflation.
November 8: David on squeezed states in inflation.
November 15: David on temporal coherence of inflationary fluctuations.
November 22: David on quantum to classical transition.
November 29: David on decoherence in inflation.

Spring/summer 2004

May 3: Bernhard Bodmann on measures of entropy.
May 10: Not available.
May 17: Tom on the Casimir effect.
May 24: holiday (Victoria day).
May 31: Tyler on decoherence.
June 7: Rob on topics in sampling theory.
June 18, 11:00 am: reports on Winnipeg conference.
July 5: Sasha reports on Winnipeg conference.
July 12: Larissa on aspects of QFT I.
July 19: Larissa on aspects of QFT II.
July 26: Tom on aspects of phi^4 theory.
August 3: Tom on Feynman rules.
August 9: Sasha on the genetic code.
August 19: Tom on Casimir effect.
August 23: Larissa on path integral in QFT (I).
August 30: Sven on path integral in QFT (II).
September 7: Rob on back reaction.
September 13: discussion.

Winter 2004

February 9: Sasha on negative entropy.
February 16: Rob on sampling I.
February 23: Rob on sampling II.
March 1: Tom on vacuum fluctuations.
March 8: Matt on superoscillations.
March 15: Rob on mode creation mechanism.
March 22: Rob (20 minutes) and Tyler on Q. info.
March 29: Larissa on singularity in mode equation.
April 5: Amjad on the adiabatic theorem.

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