Quantum simulation and optimization in hot quantum networks
M. J.A. Schuetz (Harvard University)
B. Vermersch (University of Innsbruck, Austrian Academy of Sciences)
G. Kirchmair (University of Innsbruck, Austrian Academy of Sciences)
L. M.K. Vandersypen (TU Delft - QCD/Vandersypen Lab, TU Delft - QN/Vandersypen Lab, TU Delft - TU Delft Services, Kavli institute of nanoscience Delft)
J. I. Cirac (Max-Planck-Institut für Quantenoptik)
M. D. Lukin (Harvard University)
P. Zoller (Austrian Academy of Sciences, University of Innsbruck)
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Abstract
We propose a setup based on (solid-state) qubits coupled to a common multimode transmission line, which allows for coherent spin-spin interactions over macroscopic on-chip distances, without any ground-state cooling requirements for the data bus. Our approach allows for the realization of fast deterministic nonlocal quantum gates, the simulation of quantum spin models with engineered (long-range) interactions, and provides a flexible architecture for the implementation of quantum approximate optimization algorithms.