The Georgia Tech Quantum Institute is hosting a lecture series during the 2011-2012 academic year. For more information on the GTQI lecture series, please contact Ken Brown at ken.brown@chemistry.gatech.edu.

December 12, 2011

Michael Geller, University of Georgia
Location: Room L1–205 in the ES&T building
Time: 3:00 pm
“Universal Quantum Simulation with Prethreshold Superconducting Qubits: Single-Excitation-Subspace Approach”

Abstract

I will discuss an alternative approach to quantum computation and simulation that is ideally suited for today’s pre-threshold-fidelity qubits, especially in superconducting architectures. This approach makes use of the n-dimensional single-excitation subspace (SES) of a system of n tunably coupled qubits. Although technically inefficient, the SES approach allows operations in SU(n) to be implemented in a single shot, without the need to decompose into gates, making large computations possible without errot correction. The real power of this approach is 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 outperform classical machines is probably within experimental reach.