论文标题
通过耗散量规对称性的量子非临界相互作用
Quantum nonreciprocal interactions via dissipative gauge symmetry
论文作者
论文摘要
两个量子系统之间的单向非交流相互作用通常由级联的量子主方程来描述，并依赖于时间反向对称性的有效破坏以及相干和耗散相互作用的平衡。在这里，我们提出了一种新的方法，用于获得与级联量子系统完全不同的非级别量子相互作用，并且通常不需要损坏的TR。我们的方法依赖于任何马尔可夫·林德布拉德主程式中存在的局部规格对称性。这种新型的量子非年代性具有许多含义，包括在目标量子系统上执行耗尽稳定的门操作的新机制。我们还引入了一种新的，极为通用的基于量子信息的度量，以量化量子非股展。
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.
