Sub-shot-noise-limit discrimination of on-off keyed coherent signals via a quantum receiver with a superconducting transition edge sensor
Sub-shot-noise-limit discrimination of on-off keyed coherent signals via a quantum receiver with a superconducting transition edge sensor
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DOI：
10.1364/oe.18.008107
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发表时间：
2010-04-12
期刊：
影响因子：
3.8
通讯作者：
Sasaki, Masahide
中科院分区：
文献类型：
--
作者：
Tsujino, Kenji;Fukuda, Daiji;Sasaki, Masahide
我们展示了一个安装了超导跃迁边缘传感器的最佳位移量子接收器对开关键控相干信号的亚射噪声极限识别。利用过渡缘传感器和光纤分束器实现了接收机的高总探测效率和高干涉可见度，在较宽的信号功率范围内，观测到的平均误差超过了散粒噪声极限。我们的技术为光通信信道中相干信号的亚快拍噪声检测开辟了一种新的技术。(C)2010年美国光学学会
We demonstrate a sub-shot-noise-limit discrimination of on-off keyed coherent signals by an optimal displacement quantum receiver in which a superconducting transition edge sensor is installed. Use of a transition edge sensor and a fiber beam splitter realizes high total detection efficiency and high interference visibility of the receiver and the observed average error surpasses the shot-noise-limit in a wider range of the signal power. Our technique opens up a new technology for the sub-shot-noise-limit detection of coherent signals in optical communication channels. (c) 2010 Optical Society of America