High-fidelity hot gates for generic spin-resonator systems

Journal article (2017)

Authors

M. J.A. Schuetz Max-Planck-Institut für Quantenoptik
G. Giedke Donostia International Physics Center, Basque Foundation for Science
L.M.K. Vandersypen QCD/Vandersypen Lab - QuTech Advanced Research Centre , Kavli institute of nanoscience Delft
J. I. Cirac Max-Planck-Institut für Quantenoptik
Research Group
QCD/Vandersypen Lab (QuTech Advanced Research Centre) (TU Delft)
Copyright: © 2017 M. J.A. Schuetz, G Giedke, L.M.K. Vandersypen, J. I. Cirac
DOI: https://doi.org/10.1103/PhysRevA.95.052335
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Published Date

2017

Language

English

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Faculty

QuTech Advanced Research Centre

Department

Quantum Computing Division

Research Group

QCD/Vandersypen Lab

Abstract

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 nonperturbative 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.

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