Projective measurement is used as a fundamental axiom in quantum
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.
The error threshold for fault-tolerant quantum computation depends
strongly on the error model. Most calculations assume a depolarizing
model, which allows for efficient calculations based on random
applications of Pauli errors. We have been exploring how the
threshold changes for both non-unital and coherent operations. I will
Tomas Jochym-O'connor of the Department of Physics and Astronomy is defending his thesis:
Novel Methods in Quantum Error Correction
Thomas is supervised by Professor Raymond Laflamme.
Sarah Kaiser of the Department of Physics and Astronomy will be defending her thesis:
Quantum Key Distribution Devices: How to make them and how to break them
Sarah is supervised by Associate Professor Thomas Jennewein.
Two-player one-round games have served to be an instrumental model in theoretical computer science. Likewise, nonlocal games consider this model when the players have access to an entangled quantum state. In this talk, I will consider a broader class of nonlocal games (extended-nonlocal games), where the referee shares an entangled state along with the players.
Kent Fisher of the Department of Physics and Astronomy is defending his thesis:
Photons & Phonons: A room-temperature diamond quantum memory
Kent is supervised by Professor Kevin Resch.
Optimizing Plasmonic Nanoantennas for Emitter Enhancement
Correcting ESR Pulse Sequences for Dynamic Nuclear Polarization
I will give an overview of work at the Centre for Quantum Photonics towards implementation of large-scale linear-optical quantum computing (LOQC) using quantum photonics. Our current research addresses the key obstacles to scalable LOQC, namely overcoming nondeterminism, achieving loss tolerance, and manufacturability.
Entanglement is an important concept in quantum information and computing. In this talk, I present a simple geometrical analysis of all rank-2 quantum mixed states. The analysis is complete for all the bipartite states, and is partial for all the multipartite states.