Quantum estimation of detection efficiency with no-knowledge quantum feedback

doi:10.1088/1674-1056/27/6/060303

中国物理B ›› 2018, Vol. 27 ›› Issue (6): 60303-060303.doi: 10.1088/1674-1056/27/6/060303

Quantum estimation of detection efficiency with no-knowledge quantum feedback

Dong Xie(谢东), Chunling Xu(徐春玲)

Faculty of Science, Guilin University of Aerospace Technology, Guilin 541004, China

收稿日期:2017-12-06 修回日期:2018-03-25 出版日期:2018-06-05 发布日期:2018-06-05
通讯作者: Dong Xie E-mail:txs.xiedong@mail.ustc.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No.11747008) and the Natural Science Foundation of Guangxi Zhuang Autonomous Region,China (Grant No.2016GXNSFBA380227).

Quantum estimation of detection efficiency with no-knowledge quantum feedback

Dong Xie(谢东), Chunling Xu(徐春玲)

Faculty of Science, Guilin University of Aerospace Technology, Guilin 541004, China

Received:2017-12-06 Revised:2018-03-25 Online:2018-06-05 Published:2018-06-05
Contact: Dong Xie E-mail:txs.xiedong@mail.ustc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No.11747008) and the Natural Science Foundation of Guangxi Zhuang Autonomous Region,China (Grant No.2016GXNSFBA380227).

摘要/Abstract

摘要： We investigate that no-knowledge measurement-based feedback control is utilized to obtain the estimation precision of the detection efficiency. We show that no-knowledge measurement is the optimal way to estimate the detection efficiency. The higher precision can be achieved for the lower or larger detection efficiency. It is found that no-knowledge feedback can be used to cancel decoherence. No-knowledge feedback with a high detection efficiency can perform well in estimating frequency and detection efficiency parameters simultaneously; simultaneous estimation is better than independent estimation given by the same probes.

关键词: no-knowldege feedback, parameter estimation, simultaneous measurement

Abstract: We investigate that no-knowledge measurement-based feedback control is utilized to obtain the estimation precision of the detection efficiency. We show that no-knowledge measurement is the optimal way to estimate the detection efficiency. The higher precision can be achieved for the lower or larger detection efficiency. It is found that no-knowledge feedback can be used to cancel decoherence. No-knowledge feedback with a high detection efficiency can perform well in estimating frequency and detection efficiency parameters simultaneously; simultaneous estimation is better than independent estimation given by the same probes.

Key words: no-knowldege feedback, parameter estimation, simultaneous measurement

中图分类号: (Decoherence; open systems; quantum statistical methods)

03.65.Yz

03.65.Ud (Entanglement and quantum nonlocality) 42.50.Pq (Cavity quantum electrodynamics; micromasers)

谢东, 徐春玲. Quantum estimation of detection efficiency with no-knowledge quantum feedback[J]. 中国物理B, 2018, 27(6): 60303-060303.

Dong Xie(谢东), Chunling Xu(徐春玲). Quantum estimation of detection efficiency with no-knowledge quantum feedback[J]. Chin. Phys. B, 2018, 27(6): 60303-060303.

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Quantum estimation of detection efficiency with no-knowledge quantum feedback

Quantum estimation of detection efficiency with no-knowledge quantum feedback

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