使用不完美（泄漏）光子组件仿真异常点包围
Emulating exceptional-point encirclements using imperfect (leaky) photonic components
摘要：
非厄米系统最近在光子学中引起了极大的关注。这些系统的特点之一是通过例外点（EP）的动态包围实现非对称模式切换和全偏振器动作的可能性。在这里，我们提供了一个新的视角，这些设备的工作原理，我们从理论上和实验表明，不对称模式切换和全偏振器的行动可以很容易地实现相同的性能和限制，使用简单的配置，模拟物理参与包围EP没有实际的包围方案的复杂性。所提出的“包围仿真器”的概念和我们的理论和实验结果可以更好地评估的局限性，实际潜力，和EP encirclements在非厄米光子学的应用。
英文摘要：
Non-Hermitian systems have recently attracted significant attention in photonics. One of the hallmarks of these systems is the possibility of realizing asymmetric mode switching and omnipolarizer action through the dynamic encirclement of exceptional points (EP). Here, we offer a new perspective on the operating principle of these devices, and we theoretically and experimentally show that asymmetric mode switching and omni-polarizer action can be easily realized with the same performance and limitations, using simple configurations that emulate the physics involved in encircling EPs without the complexity of actual encirclement schemes. The proposed concept of 'encirclement emulators' and our theoretical and experimental results may allow a better assessment of the limitations, practical potential, and applications of EP encirclements in non-Hermitian photonics.
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