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arXiv · 2203.09392

Quantum nonreciprocal interactions via dissipative gauge symmetry

Yu-Xin Wang·Chen Wang·Aashish A. Clerk
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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.

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Yu-Xin Wang, Chen Wang, Aashish A. Clerk. 2022-03-17. Quantum nonreciprocal interactions via dissipative gauge symmetry. https://doi.org/10.1103/prxquantum.4.010306

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