On capacity of optical channels with coherent detection
On capacity of optical channels with coherent detection
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相干检测光通道容量研究
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Lizhong Zheng
中科院分区：
文献类型：
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作者：
Hye Won Chung;S. Guha;Lizhong Zheng
我们研究了一般的相干状态假设检验问题和纯损耗光信道的容量与相干处理接收机（接收机，使用相干反馈控制和直接检测）。我们描述的二进制假设错误接收机的最小概率优化通信效率在每个时刻，递归更新的接收机的知识的基础上。利用这一观点，我们给出了一个自然的推广一般的M元假设检验问题的设计。我们分析了相干接收器的信息容量，并将结果与直接检测接收器和任意量子接收器（Holevo极限）进行比较，在低光子数制度中使用适当的缩放。
We study the general coherent-state hypothesis testing problem and the capacity of the pure-loss optical channel with a coherent processing receiver (a receiver that uses coherent feedback control and direct detection). We describe the binary hypothesis minimum probability of error receiver as optimizing the communication efficiency at each instant, based on recursively updated knowledge of the receiver. Using this viewpoint, we give a natural generalization of the designs to general M-ary hypothesis testing problems. We analyze the information capacity with coherent receivers, and compare the result with that with direct detection receivers and with arbitrary quantum receivers (the Holevo limit), using the appropriate scalings in the low photon number regime.