University of California, Riverside

Department of Electrical and Computer Engineering

Quantum Annealing with Hundreds of Qubits

Quantum Annealing with Hundreds of Qubits

Quantum Annealing with Hundreds of Qubits

May 12, 2014 - 11:10 am
Winston Chung Hall, 205/206


Quantum annealing exploits quantum effects to speed up the solution to tough optimization problems. In October 2011 USC and Lockheed Martin jointly founded a quantum computing center housing D-Wave's 128 qubit Rainier processor, which implements programmable thermal quantum annealing using superconducting flux qubits. In March 2013 the processor was upgraded to the 512 qubit Vesuvius model. These are special-purpose processors designed to find the ground state of a broad class of 2D classical Ising models with as many spins as qubits. There has been much controversy surrounding the D-Wave processors, questioning whether they truly perform *quantum* annealing. This talk will survey some of the work we have done at USC to benchmark the processors against highly optimized classical algorithms, to test for quantum effects, and to perform error correction.


Daniel Lidar received his Ph.D. in Physics from the Hebrew University of
 Jerusalem in 1997, was a Postdoctoral Fellow at UC Berkeley for three years,
and became a faculty member in the Chemistry Department at the University of Toronto in 2000, with cross-appointments in Physics and Mathematics. He
co-founded and directed the University of Toronto Center for Quantum 
Information and Quantum Control. Lidar joined the Electrical Engineering
 Department of the Viterbi School of Engineering, USC, in July 2005, and
 holds cross appointments in Chemistry and Physics. His research focuses on 
the problem of controlling open quantum systems, with a particular emphasis
on quantum computers. His work revolves around various aspects of quantum information science, including quantum algorithms, the theory of open quantum systems, and theoretical as well as experimental adiabatic quantum computation. Among his awards, Lidar is a Fellow of the American Association for the Advancement of Science (AAAS) since 2012, is a Fellow of the American Physical Society since 2007, is a Senior Member of the IEEE since 2007, was awarded a Sloan Foundation Fellowship in 2003, and was named one of the Top 20 Researchers Under 40 by the Canadian Institute for Advanced Research in 2002. Lidar is the Director and co-founding member of the USC Center for Quantum Information Science and Technology (CQIST), and is the Scientific Director of the USC-Lockheed Martin Center for Quantum Computing. He has published over 150 peer reviewed technical papers and holds four patents.



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Electrical and Computer Engineering
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University of California, Riverside
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