Decoherence Sensing of Entangled-Coherent-State Channels via Unambiguous Quantum State Filtering
TONG Zhao-Yang, KUANG Le-Man
Department of Physics, Hunan Normal University, Changsha 410081
Decoherence Sensing of Entangled-Coherent-State Channels via Unambiguous Quantum State Filtering
TONG Zhao-Yang; KUANG Le-Man
Department of Physics, Hunan Normal University, Changsha 410081
关键词 ：
03.67.2a ,
03.65.Ta ,
42.50.Dv
Abstract ： Unambiguous quantum state filtering is applied to evaluation of the decoherence sensing of entangled quantum channels consisting of N-mode entangled coherent states. It is found that quantum entanglement can enhance the performance of decoherence sensing while the increase of the mode numbers in the entangled probe field can slightly improve the sensing performance only in the weak field regime.
Key words ：
03.67.2a
03.65.Ta
42.50.Dv
出版日期: 2006-05-01
:
03.67.2a
03.65.Ta
(Foundations of quantum mechanics; measurement theory)
42.50.Dv
(Quantum state engineering and measurements)
引用本文:
TONG Zhao-Yang; KUANG Le-Man. Decoherence Sensing of Entangled-Coherent-State Channels via Unambiguous Quantum State Filtering[J]. 中国物理快报, 2006, 23(5): 1076-1079.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I5/1076
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2006, Vol. 23 
