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Friday, June 24, 2016 2:00 pm - 2:00 pm EDT (GMT -04:00)

Seminar: Bhaskaran Muralidharan

The role of dual-nuclear baths on singlet-triplet dynamics in a double quantum dot

Bhaskaran Muralidharan, Indian Institute of Technology Bombay

A deeper understanding of electronic transport phenomena at the nanoscale is a cross-disciplinary effort that intertwines quantum dynamics, electronic structure and statistical physics.

Monday, June 27, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Robert Myers

Information, Holography & Gravity

Robert Myers, Perimeter Institute

In science, new advances and insights often emerge from the confluence of different ideas coming from what appeared to be disconnected research areas. The theme of my talk will review an ongoing collision between the three topics listed in my title which has been generating interesting new insights about the nature of quantum gravity, as well as variety of other fields, such as condensed matter physics and quantum field theory.

Monday, July 11, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Jess Riedel

Where are the branches in a many-body wavefunction?

Jess Riedel, Perimeter Institute

When the wavefunction of a macroscopic system (such as the universe) unitarily evolves from a low-entropy initial state, we expect that it develops quasiclassical "branches", i.e., a decomposition into orthogonal components each taking well-defined, distinct values for macroscopic observables. Is this decomposition unique? Can the number of branches decrease in time?

Tuesday, July 12, 2016 12:00 pm - 12:00 pm EDT (GMT -04:00)

Seminar: Jonathan Oppenheim

Quantum thermodynamics - a review

Jonathan Oppenheim, University College London

I review recent results in quantum thermodynamics. This includes the emergence of many second laws at the micro-scale, fully quantum fluctuation relations for work and for states, a proof of the third law of thermodynamics applicable to erasing a bit of memory, and a grand canonical ensemble for non-commuting conserved quantities. Progress has been made using tools from quantum information theory.

Monday, July 18, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Michael Walter

Quantum information in tensor networks

Michael Walter, Stanford University

In this talk, we explore how quantum information is encoded in tensor networks. To this end, we study the properties of random tensor networks with large bond dimension. We find that, from the perspective of quantum information theory, entanglement emerges from the geometry of the network by a multipartite entanglement distillation process.

Monday, July 25, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium: Xiaobo Zhu

On resonance quantum switch by longitudinal control field and demonstration of Solving Linear Equations by Superconducting Quantum Circuits

Xiaobo Zhu, University of Science and Technology, China

In this talk, I will introduce our recent two progresses on superconducting qubit system.

Tuesday, August 2, 2016 1:30 pm - 1:30 pm EDT (GMT -04:00)

Seminar: Stephanie Simmons

A photonic link for donor spin qubits in silicon

Stephanie Simmons, Simon Fraser University

Atomically identical donor spin qubits in silicon offer excellent native quantum properties, which match or outperform many qubit rivals. To scale up such systems it would be advantageous to connect silicon donor spin qubits in a cavity-QED architecture. Many proposals in this direction introduce strong electric dipole interactions to the otherwise largely isolated spin qubit ground state in order to couple to superconducting cavities.

Tuesday, August 2, 2016 2:32 pm - 2:32 pm EDT (GMT -04:00)

Seminar: Carlos Perez Delgado

Secure Quantum Computation: Optimality and Beyond

Carlos Perez Delgado, University of Sheffield

When a server performs a quantum computation for a client, the client may insist on various security requirements. One is that the client be able to ascertain the correctness of the computation with high probability. This is called verifiability. A second one is that the server not be able to learn the input, output, or nature of the computation that it itself is performing.

Thursday, August 4, 2016 12:00 pm - 12:00 pm EDT (GMT -04:00)

Seminar: Sophie Laplante

Robust Bell inequalities from communication complexity

Sophie Laplante, Université Paris Diderot

The question of how large Bell inequality violations can be, for quantum distributions, has been the object of much work in the past several years. We say a Bell inequality is normalized if its absolute value does not exceed 1 for any classical (i.e. local) distribution.