Dresden 2017 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 15: Quantum Dynamics, Decoherence, Quantum Information
DY 15.10: Talk
Tuesday, March 21, 2017, 12:00–12:15, ZEU 160
High-Fidelity Hot Gates for Generic Spin-Resonator Systems — •Martin J. A. Schuetz1, Geza Giedke2,3, Lieven M. K. Vandersypen4, and Ignacio Cirac1 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany — 2Donostia International Physics Center, Paseo Manuel de Lardizabal 4, E-20018 San Sebastián, Spain — 3Ikerbasque Foundation for Science, Maria Diaz de Haro 3, E-48013 Bilbao, Spain — 4Kavli Institute of NanoScience, TU Delft, P.O. Box 5046, 2600 GA Delft, The Netherlands
We propose and analyze a high-fidelity hot gate for generic spin-resonator systems which allows for coherent spin-spin coupling, in the presence of a thermally populated resonator mode. Our scheme is non-perturbative in the spin-resonator coupling strength, applies to a broad class of physical systems, including for example spins coupled to circuit-QED and surface acoustic wave resonators as well as nanomechanical oscillators, and can be implemented readily with state-of-the- art experimental setups. We provide and numerically verify simple expressions for the fidelity of creating maximally entangled states under realistic conditions.