Demonstration of near-optimal discrimination of optical coherent states.
Demonstration of near-optimal discrimination of optical coherent states.
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DOI：
10.1103/physrevlett.101.210501
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发表时间：
2008-09
影响因子：
8.6
通讯作者：
C. Wittmann;M. Takeoka;K. Cassemiro;M. Sasaki;G. Leuchs;U. Andersen
中科院分区：
文献类型：
--
作者：
C. Wittmann;M. Takeoka;K. Cassemiro;M. Sasaki;G. Leuchs;U. Andersen
以最小错误概率最优鉴别非正交量子态是量子测量理论中的一个基本任务，也是光通信中的一个重要基础。在这项工作中，我们提出并实验实现了一种新的和简单的量子测量策略，能够区分两个相干态的误差概率小于可以使用标准测量设备：肯尼迪接收机和零差接收机。
The optimal discrimination of nonorthogonal quantum states with minimum error probability is a fundamental task in quantum measurement theory as well as an important primitive in optical communication. In this work, we propose and experimentally realize a new and simple quantum measurement strategy capable of discriminating two coherent states with smaller error probabilities than can be obtained using the standard measurement devices: the Kennedy receiver and the homodyne receiver.