论文标题
手动电流循环和$ \ Mathcal {pt} $对称振荡器的对称器
Chiral current circulation and $\mathcal{PT}$ symmetry in a trimer of oscillators
论文作者
论文摘要
我们在三角形构型中提出了骨质三聚体的简单量子理论，如开放量子系统方法中的增益和损失。重要的是，每个振荡器之间的耦合常数被复杂的参数增强，这会导致各种不对称。特别是，当在相干且不连贯的耦合方面满足某些条件时，可能会调整复合阶段以诱导手性电流，包括完全单向（或单向）循环的特殊情况。当我们的一般理论被重塑为一个特定的非热汉密尔顿人时，我们发现了三聚体的动力学中有趣的特征，接近损坏的$ \ Mathcal {pt} $对称性阶段之间的特殊点。我们的理论工作为在各种可访问的纳米型和纳米质系统中在纳米级的手性传输实现实现的观点提供了观点，并为非临时设备的潜在实现铺平了道路。
We present a simple quantum theory of a bosonic trimer in a triangular configuration, subject to gain and loss in an open quantum systems approach. Importantly, the coupling constants between each oscillator are augmented by complex arguments, which give rise to various asymmetries. In particular, one may tune the complex phases to induce chiral currents, including the special case of completely unidirectional (or one-way) circulation when certain conditions are met regarding the coherent and incoherent couplings. When our general theory is recast into a specific non-Hermitian Hamiltonian, we find interesting features in the trimer population dynamics close to the exceptional points between phases of broken and unbroken $\mathcal{PT}$ symmetry. Our theoretical work provides perspectives for the experimental realization of chiral transport at the nanoscale in a variety of accessible nanophotonic and nanoplasmonic systems, and paves the way for the potential actualization of nonreciprocal devices.
