Modifying quantum optical states by zero-photon subtraction
Modifying quantum optical states by zero-photon subtraction
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DOI：
10.1103/physreva.105.033702
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发表时间：
2021-12
影响因子：
2.9
通讯作者：
C. M. Nunn;J. Franson;T. Pittman
中科院分区：
文献类型：
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作者：
C. M. Nunn;J. Franson;T. Pittman
单光子相减（SPS）的过程被称为显着改变某些量子光学状态的属性。令人惊讶的是，减去零光子也可以修改量子态，并在量子通信中有实际应用。在这里，我们实验研究零光子减法（ZPS）使用各种各样的输入状态和条件测量的基础上积极检测零光子在一个输出端口的可变分束器。我们发现，SPS和ZPS可以表现出互补的行为依赖于输入态的光子统计，并突出了更深层次的联系与曼德尔的Q参数分类的量子态。
The process of single-photon subtraction (SPS) is known to dramatically alter the properties of certain quantum optical states. Somewhat surprisingly, subtracting zero photons can also modify quantum states and has practical applications in quantum communication. Here we experimentally investigate zero-photon subtraction (ZPS) using a wide variety of input states and conditional measurements based on actively detecting zero photons in one output port of a variable beamsplitter. We find that SPS and ZPS can exhibit complementary behavior depending on the photon statistics of the input states, and highlight deeper connections with Mandel’s Q-parameter for classifying quantum states.