AI 中文总结
该研究提出复合光束用于模拟量子操作特性，比较多模热光束等的光子加减操作，发现光子加操作对前两类光束更优、光子减操作对多模孪生光束更优，还实现了近乎理想的实验光子加操作。
AI 中文摘要
本文提出了由简单实验模块（在同步探测窗口中被探测）构成的复合光束，这些模块形成特定的量子关联结构，用于模拟不同量子操作的特性，这些量子操作是构建量子通信、计量和信息协议所需的高度非经典及纠缠多模态的关键。研究对复合多模热光束、亚泊松光束以及强度跨度达两个数量级的多模孪生光束中的多光子加减操作进行了定性与定量比较，加减光子数最多达20个，确定了实验非经典态生成的最优条件。总体而言，对于复合多模热光束和亚泊松光束，光子加操作比光子减操作更具优势：前者诱导（增强）非经典性，后者则增强非经典性；相反，在多模孪生光束中，光子减操作优于光子加操作。此外，利用复合孪生光束中的时间光子对关联进行后选择时，可实现近乎理想的实验光子加操作。
英文摘要
Compound beams composed of simple experimental blocks (detected in simultaneous detection windows) that form specific quantum-correlated structures are suggested for simulating the properties of different quantum operations used for creating highly nonclassical and entangled multi-mode states needed in quantum communication, metrology, and information protocols. Qualitative and quantitative comparison of multi-photon addition and subtraction in compound multi-mode thermal as well as sub-Poissonian beams and multi-mode twin beams with their intensities extending over two orders in magnitude is provided. Adding and subtracting up to twenty photocounts, optimal conditions for the generation of experimental nonclassical states are identified. In general, photon addition is identified as advantageous over photon subtraction for the multi-mode thermal and sub-Poissonian beams: It induces (enhances) the nonclassicality in the former (latter) state. Contrary to this, photon subtraction outperforms photon addition in the multi-mode twin beams. Moreover, exploiting temporal photon-pair correlations in compound twin beams when post-selecting, nearly ideal experimental photon(s) addition is demonstrated.
CommentsPhoton addition and subtraction are systematically compared across twin-beam, thermal, and sub-Poissonian states at varying intensities over two orders in magnitude
