Quantum nonreciprocal interactions via dissipative gauge symmetry
Abstract
One-way nonreciprocal interactions between two quantum systems are typically described by a cascaded quantum master equation, and rely on an effective breaking of time-reversal symmetry as well as the balancing of coherent and dissipative interactions. Here, we present a new approach for obtaining nonreciprocal quantum interactions that is completely distinct from cascaded quantum systems, and that does not in general require broken TRS. Our method relies on a local gauge symmetry present in any Markovian Lindblad master equation. This new kind of quantum nonreciprocity has many implications, including a new mechanism for performing dissipatively-stabilized gate operations on a target quantum system. We also introduce a new, extremely general quantum-information based metric for quantifying quantum nonreciprocity.
Keywords
Cite
@article{arxiv.2203.09392,
title = {Quantum nonreciprocal interactions via dissipative gauge symmetry},
author = {Yu-Xin Wang and Chen Wang and Aashish A. Clerk},
journal= {arXiv preprint arXiv:2203.09392},
year = {2023}
}