光子耗散动力学在奇异点处的转变

中文摘要 AI 辅助

光在光学结构中的衰减不仅取决于材料的固有性质，还取决于周围的电磁环境。这一原理为光子发射器中耗散的工程化奠定了基础。传统观点认为，耗散由一组固定的衰减通道控制，每个通道由结构的本征态定义，能量通过这些通道泄漏并与之相互作用。在此，我们提供实验证据表明，这一范式在非厄米系统中失效。具体而言，我们在一对调谐至奇异点附近的耦合微腔中观察到加速的瞬态衰减，揭示光子耗散可以通过重构底层态空间而非重新配置现有损耗通道来控制。该现象的普适性通过两个独立的控制实验得到证实。这一发现为开放光学系统中的耗散动力学提供了新视角，并为超快光子系统中控制瞬态衰减提供了一种独特的机制。

英文摘要

The decay of light in an optical structure depends not only on the intrinsic properties of the material but also on the surrounding electromagnetic environment. This principle has laid the foundation for the engineering of dissipation in photonic emitters. In the conventional wisdom, dissipation is governed by a fixed set of decay channels, each defined by the eigenstates of the structure, and energy leaks through and interacts with these channels. Here we provide experimental evidence that this paradigm fails in non-Hermitian systems. Specifically, we observe an accelerated transient decay in a pair of coupled microcavities tuned near the exceptional point, revealing that photonic dissipation can be governed not by reconfiguring existing loss channels, but rather by restructuring the underlying state space. The universality of this phenomenon is corroborated through two independent control parameters.The finding provides a new perspective on dissipative dynamics in open optical systems and offers a distinct mechanism for controlling transient decay in ultrafast photonic systems.

发表机构

• Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen（工业和信息化部微纳光电信息系统重点实验室，广东省半导体光电子材料与智能光子系统重点实验室，哈尔滨工业大学（深圳））
• Pengcheng Laboratory（鹏城实验室）
• Quantum Science Center of Guangdong-Hongkong Macao Greater Bay Area（粤港澳大湾区量子科学中心）
• Collaborative Innovation Center of Extreme Optics, Shanxi University（极端光学协同创新中心，山西大学）
• Heilongjiang Provincial Key Laboratory of Advanced Quantum Functional Materials and Sensor devices, Harbin Institute of Technology, Harbin（黑龙江省先进量子功能材料与传感器器件重点实验室，哈尔滨工业大学）

机构由 AI 辅助整理，请以论文原文为准。