Quantum simulation and optimization in hot quantum networks
Martin J. A. Schuetz, Benoît Vermersch, Gerhard Kirchmair, Lieven M. K. Vandersypen, J. I. Cirac, Mikhail D. Lukin, P. Zoller · Physical review. B./Physical review. B · 2019
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.