基于测量的反馈作为控制非泊松光子统计的灵活工具
Measurement-based feedback as a flexible tool to control non-Poissonian photon statistics
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中文总结 AI 辅助
本文提出利用基于测量的反馈控制线性驱动腔的光子统计，通过调节反馈相位连续切换超/亚泊松发射，为非线性系统外的统计调控提供新途径。
中文摘要 AI 辅助
非泊松光子统计通常归因于非线性相互作用、非经典态或工程化储库。在此，我们展示基于测量的反馈可以替代性地用于控制外部驱动的线性腔中测量统计的泊松特性。每次光子探测触发一个弱位移操作，其相位决定反馈如何与相干腔场干涉，从而产生显著的腔响应。全计数统计和双时光子关联表明，反馈相位控制诱导关联的符号和强度，连续调节发射统计在超泊松和亚泊松区域之间。在一般相位下，曼德尔参数对反馈幅度呈线性响应，而在特定相位下，主导响应变为二次。发射统计的高阶累积量中也发现相同的相位依赖性。这些结果确立了基于测量的反馈作为在原本线性的驱动-耗散系统中控制光子统计的一条途径。
英文摘要
Non-Poissonian photon statistics are usually traced to nonlinear interactions, nonclassical states, or engineered reservoirs. Here we show that measurement-based feedback can be alternatively deployed to control the Poissonian character of the measurement statistics in an externally-driven linear cavity. Each photon detection triggers a weak displacement operation whose phase determines how the feedback interferes with the coherent cavity field, resulting in a significant cavity response. Full counting statistics and two-time photon correlations show that the feedback phase controls the sign and strength of the induced correlations, continuously tuning the emission statistics between super- and sub-Poissonian regimes. At generic phases, the Mandel parameter responds linearly to the feedback amplitude, whereas at specific phases, the leading response becomes quadratic. The same phase dependence is also found in higher-order cumulants of the emission statistics. These results establish measurement-based feedback as a route to controlling photon statistics in otherwise linear driven-dissipative systems.
发表机构
- Shenzhen International Quantum Academy（深圳国际量子学院）
- Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology（南方科技大学深圳量子科学与工程学院）
- Department of Physics, Zhejiang University of Science and Technology（浙江科技学院物理系）
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