AI 中文总结
研究非厄米耦合系统，发现其耗散会产生非本征输出，可通过弱外部驱动强度之比有效操纵，出现耗散抑制、频率偏移等现象，还发现相关毕达哥拉斯关系用于精确测量，数值模拟证实在经典耦合系统也存在干涉输出，为测量和非厄米物理提供见解。
AI 中文摘要
测量有助于探索和理解自然并广泛应用。通常认为测量中使用的弱外部驱动对被探测系统的本征输出干扰可忽略。本文揭示非厄米量子耦合系统中的耗散会引发自激与耦合激发谱函数间的干涉，产生非本征输出。通过施加于两通道的弱外部驱动强度之比可有效操纵这些输出，出现高损耗模式向低损耗模式收敛效应导致的耗散极端抑制、共振频率大幅偏移而非原始谱拉比分裂等现象。关键是发现了连接本征能级分裂、谱拉比分裂和平均总衰减率的毕达哥拉斯关系，可精确测量本征能级分裂和耦合强度。数值模拟证实经典耦合系统中也存在干涉输出。我们的工作为测量和非厄米物理提供了深刻见解。
英文摘要
Measurement provides access to exploring and understanding nature and finds widespread applications. It is generally believed that the weak external driving used in measurement introduces negligible disturbance to the intrinsic output of the probed system. Here, we reveal that dissipation in a non-Hermitian quantum coupled system induces interference between self-excitation and coupling-excitation spectral functions, giving rise to non-intrinsic outputs. These non-intrinsic outputs can be effectively manipulated by the ratio of weak external driving strengths applied to two channels, leading to significant phenomena: extreme suppression of dissipation by convergence effect of high-loss mode towards low-loss mode, and giant shift of resonant frequency instead of original spectral Rabi splitting. Crucially, we discover the Pythagorean relation linking eigenlevel splitting, spectral Rabi splitting and average total decay rate, enabling precise measurement of the eigenlevel splitting and coupling strength. Numerical simulations confirm that the interference outputs also exist in classical coupled systems. Our work provides a profound insight into measurement and non-Hermitian physics.
