Quantum phase estimation with local amplified 1001 state based on Wigner-function method

被引：0
|
作者：
Xue-Xiang Xu
Hong-Chun Yuan
机构：
[1] Jiangxi Normal University,Key Laboratory of Optoelectronic and Telecommunication of Jiangxi Province
[2] Changzhou Institute of Technology,College of Optoelectronic Engineering
来源：
Quantum Information Processing | 2015年 / 14卷
关键词：
Phase estimation; Quantum interference; Wigner-function method; N00N state;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We demonstrate the utility of Wigner-function (WF) method in studying the quantum phase estimation. This phase estimation protocol for optical interferometry uses local amplified 1001 state as a probe state. Here, the probe state is obtained by local squeezing each mode of a single-photon-path-entangled state (1001 state). We derive analytically the WFs in describing the connection between input and output fields. In addition, the phase estimation is examined by using parity detection, and the results indicate that our strategy is super-resolving and supersensitive.
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页码：411 / 424
页数：13
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