[quantum-info] Talks (one tomorrow!) and Visitors

William Matthews will at northala.net
Sun Nov 7 16:42:46 EST 2010


If you notice something you feel is missing from this mail,
or have a correction, please inform the mailing list.

------ This week ------

-- Talks --

Monday, Nov 8th 2010 12:30pm, IQC, RAC1 room 2009,
Mike Geller, University of Georgia
Title: I will discuss an alternative approach to quantum computation and simulation that is ideally suited for today's sub-threshold-fidelity qubits, especially in  superconducting architectures. This approach makes use of the the n-dimensional  single-excitation subspace (SES) of a system of n tunably coupled qubits.  Although technically unscalable and inefficient in terms of the number of qubits required, the SES approach allows n-dimensional unitary operations to be implemented in a single shot, without the need to decompose into gates. The real  power of this approach is probably in its application to quantum simulation, and I will show that for a particular class of time-dependent quantum simulation problems a practical device that would vastly outperform classical machines  
is within experimental reach.

Wednesday, Nov 10th 2010 4:00 pm, PI, Room 405,
Kristan Temme, University of Vienna
Title: Quantum Metropolis sampling
Abstract: Quantum computers have emerged as the natural architecture to study the physics of strongly correlated many-body quantum systems, thus providing a major new impetus to the field of many-body quantum physics. While the method of choice for simulating classical many-body systems has long since been the ubiquitous Monte Carlo method, the formulation of a generalization of this method to the quantum regime has been impeded by the fundamental peculiarities of quantum mechanics, including, interference effects and the no-cloning theorem. We overcome those difficulties by constructing a quantum algorithm to sample from the Gibbs distribution of a quantum Hamiltonian at arbitrary temperatures, both for bosonic and fermionic systems. This is a further step in validating the quantum computer as a full quantum simulator, with a wealth of possible applications to quantum chemistry, condensed matter physics and high energy physics.

-- Visitors --

Patrick Hayden (McGill University) is visiting PI
until December 15th
hosted by Neil Turok

Paolo Perinotti (Universita degli Studi di Pavia) is visiting PI
until November 18th
hosted by Giulio Chiribella

Kristan Temme (University of Vienna) is visiting PI
until November 12th
hosted by Michele Mosca

Taylor Hughes (University of Illinois, Urbana-Champaign) will be visiting PI
November 8th through November 22nd
hosted by Alioscia Hamma

Giacomo Mauro D'Ariano (Universita degli Studi di Pavia) will be visiting PI
November 9th through December 2nd 
hosted by Giulio Chiribella

------ Upcoming (next 4 weeks - not exhaustive!) ------

-- Talks --

Monday, Nov 15th 12:30 pm, IQC (RAC1) Room 2009
Patrick Hayden (McGill and Perimeter Institute)
"TBA"

Tuesday, Nov 16th 4:00pm, PI, Room 301
Marcin Pawlowski (Institute of Theoretical Physics and Astrophysics, Gdansk)
"What does information causality imply?"

Monday, Nov 22nd 12:00 noon, IQC RAC1 Room 2009
Robert Raussendorf, University of British Columbia
"The 2D AKLT state is universal for measurement-based quantum computation."

Wednesday, Nov 24th 2:00 pm, PI, Room 405
Carl Bender
"Making sense of non-Hermitian Hamiltonians"

-- Visitors --

Marcin Pawlowski (University of Gdansk) will be visiting PI
November 14th through November 18th
hosted by Giulio Chiribella

Sergey Bravyi (IBM T. J. Watson Research Center) will be visiting PI
November 30th 2010 through December 2nd 2010
hosted by Lucien Hardy


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