# Events - 2018

Thursday, May 31, 2018 — 2:30 PM EDT

## Scaling up superconducting quantum computers

### David P. Pappas, National Institute of Standards and Technology (NIST)

Thursday, May 31, 2018 — 1:00 PM EDT

## Flag fault-tolerant error correction for cyclic CS5 codes

### MSc. Thesis Presentation

Candidate: Theerapat Tansuwannont

​Supervisor: Debbie Leung

Thursday, May 31, 2018 — 11:00 AM EDT

## Dissipative stabilization and manipulation of Schrödinger cat states for quantum error correction

### Alexander Grimm, Yale University

In recent years, circuit quantum electrodynamics (QED) has seen considerable efforts towards protecting quantum information from unwanted sources of decoherence through quantum error correction. Independent of the implementation, this is based on encoding a logical qubit into a stable manifold within a larger Hilbert space, whose symmetries restrict the number of independent errors and make them detectable and correctable.

Monday, May 28, 2018 (all day) to Friday, June 8, 2018 (all day)

## Undergraduate School on Experimental Quantum Information Processing

Join us at the Institute for Quantum Computing for a two-week introduction to the theoretical and experimental study of quantum information processing.

During the Undergraduate School on Experimental Quantum Information Processing (USEQIP) will be exposed to lectures and experiments on the following topics and more.

• Quantum information processing
• Implementation for quantum information processing
• Experimental exploration
Wednesday, May 23, 2018 — 1:15 PM EDT

## Maximal Coherence and the Resource Theory of Purity

### Dagmar Bruss, University of Duesseldorf

Friday, May 18, 2018 — 11:45 AM EDT

## RAC1 Journal Club/Seminar Series

### Crystal Senko: Ion traps and multi-level quantum systems

Thursday, May 17, 2018 — 4:00 PM EDT

## Asymptotic limits in quantum frequency estimation

### Seminar featuring Jan Haase, Universität Ulm

Thursday, May 17, 2018 — 4:00 PM EDT

## Asymptotic limits in quantum frequency estimation

### Jan Haase, Universität Ulm

Thursday, May 17, 2018 — 12:00 PM EDT

## CryptoWorks21 - "So sue me!"

Speaker: Jacqueline Armstrong Gates

Tuesday, May 8, 2018 — 9:30 AM EDT

## Quantum Machine Learning Symposium

The Creative Destruction Lab (CDL) is hosting a half-day symposium to discuss recent advances in Quantum Machine Learning, its near-term industry applications, and opportunities for commercialization with private financing as a technology startup.

Friday, May 4, 2018 — 2:30 PM EDT

## Impact of atomic structure and dynamics on solar cell performance of metal halide perovskite thin films

### Joshua Choi - University of Virginia

Metal halide perovskites (MHPs) are revolutionizing the solar cell research field - the record power conversion efficiency of MHPs based solar cells has reached 22.7%, which rivals that of silicon solar cells. What is particularly exciting about MHPs is that they can be manufactured into solar cell devices at low-costing using low temperature solution processing. Based on these attributes, MHPs have been called the “next big thing in photovoltaics” and worldwide research efforts have grown explosively.

Thursday, May 3, 2018 — 1:30 PM EDT

## Towards many-body physics with Rydberg-dressed cavity polaritons

#### M.Sc. Thesis Presentation

Candidate: Hyeran Kong

Thursday, May 3, 2018 — 1:00 PM EDT

## Above Bandgap Hyperpolarization Mechanism in Isotopically Purified Silicon and Optimal Bayesian Experiment Design for T1 Estimation

#### MSc. Thesis Presentation

Candidate: Thomas Alexander

Monday, April 30, 2018 — 2:30 PM EDT

## Asymptotic performance of port-based teleportation

### Felix Leditzky, University of Colorado, Boulder

Thursday, April 26, 2018 — 7:00 PM EDT

## Entangled: The series – QUANTUM + Literature

The invention of quantum physics in the early 20th century forced scientists to reconsider many cherished ideas from classical physics, leading to revolutionary changes in our scientific and philosophical understanding of the universe. Quantum phenomena have also proven to be a rich source of metaphors and inspiration for fiction.

Thursday, April 26, 2018 — 12:00 PM EDT

## Transformative Quantum Technologies (TQT) Lunch and Learn

### Technology Investment and Mentorship

Researchers and early-stage companies may discover numerous investment options on their path to commercial success. While some mechanisms focus on a certain phase of technology development, others promise to fuel growth over a wide R,D&D spectrum, possibly independent of prior investment status. This panel covers a sampling of programs and investment strategies - from technology scouting to angel capital - for mobilizing intellectual property towards impactful deployment.

Panel:

Tuesday, April 24, 2018 — 2:00 PM EDT

## Quantum Computing - A Quantum Algorithm for Simulating Non-sparse Hamiltonians

### PhD Seminar

#### Chunhao Wang, PhD candidate

David R. Cheriton School of Computer Science

We present a quantum algorithm for simulating the dynamics of Hamiltonians that are not necessarily sparse. Our algorithm is based on the assumption that the entries of the Hamiltonian are stored in a data structure that allows for the efficient preparation of states that encode the rows of the Hamiltonian. We use a linear combination of quantum walks to achieve a poly-logarithmic dependence on the precision.

Tuesday, April 24, 2018 — 1:00 PM EDT

## Quantum Computing - Dissipative Quantum Search

### PhD Seminar

#### Chunhao Wang, PhD candidate

David R. Cheriton School of Computer Science

We give a dissipative quantum search algorithm that is based on a novel dissipative query model. If there are $N$ items and $M$ of them are marked, this algorithm performs a fixed-point quantum search using $O(\sqrt{N/M}\log(1/\epsilon))$ queries with error bounded by $\epsilon$. In addition, we present a continuous-time version of this algorithm in terms of Lindblad evolution.

Monday, April 23, 2018 — 2:30 PM EDT

## Probing many-body interactions using entangled photons: theory and thoughts for experiments.

### Eric Bittner, University of Houston

Entangled photons offer an exquisite probe to correlated dynamics within a material system. In my talk I shall discuss some recent experiments and our theoretical investigations into developing an input/output scattering theory approach that connects an incoming photon Fock state to an outgoing Fock state, treating both the internal (material) and photon dynamics on a consistent footing. As proof of concept, we show how entangled photons can probe the inner workings of a model system undergoing spontaneous symmetry breaking.

Friday, April 20, 2018 — 11:45 AM EDT

## RAC1 Journal Club/Seminar Series

### Keysight's Quantum Engineering Toolkit: A commercial, customizable integrated control and test system

#### Presented by guest speaker Nizar Messaoudi, Keysight Technologies Application Engineer

With traditional classical complementary metal oxide semiconductor (CMOS) computing struggling to keep up with Moore’s law, interest in quantum computing has exploded and the University of Waterloo is at the centre of this technological revolution.

Thursday, April 19, 2018 — 12:00 PM EDT

## CryptoWorks21 - Intellectual Property (IP) in Academia

Speaker: Doug Beynon

Abstract:

Thursday, April 19, 2018 — 12:00 PM EDT

## The Polynomial Method Strikes Back: Tight Quantum Query Bounds via Dual Polynomials

### Robin Kothari, Microsoft Research (PLEASE NOTE NEW DATE AND TIME)

We use the polynomial method to prove optimal or nearly optimal lower bounds on the quantum query complexity of several problems, resolving open questions from prior work. The problems studied include k-distinctness, image size testing, k-junta testing, approximating statistical distance, approximating Shannon entropy, and surjectivity.​ Paper available at https://arxiv.org/abs/1710.09079. This is joint work with Mark Bun and Justin Thaler.

Thursday, April 12, 2018 — 12:00 PM EDT

## Transformative Quantum Technologies (TQT) Lunch and Learn

### A Case Study in Patent Development

Wednesday, April 11, 2018 — 1:00 PM EDT

## Mind the gap: Cheeger inequalities and adiabatic algorithms

### Michael Jarret, Perimeter Institute for Theoretical Physics

The runtime of Adiabatic optimization algorithms are typically characterized by the size of the spectral gap of the corresponding Hamiltonian. Gap analysis nonetheless remains a challenging problem with few general approaches.

Tuesday, April 10, 2018 — 1:30 PM EDT

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