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Quantum Fisher information of triphoton states

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Abstract

Based on the standard angular momentum theory, we create an experiment on preparing maximally path-entangled (|N,0?+|0,N?)2 (NOON) states of triphotons. In order to explain the error between the theoretical and experimental data, we consider the background events during the experiment, and observe their effect on the uncertainty in S^1. Afterwards, we calculate the quantum Fisher information (QFI) of the states to evaluate their potential applications in quantum metrology. Our results show that by adding the appropriate background terms, the theoretical data of the produced states matches well with the experimental data. In this case, the QFI of the states is lower than maximally entangled NOON states, but still higher than a classical state.

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DOI:10.3788/COL201614.032701

所属栏目:Quantum optics

收稿日期:2015-11-26

录用日期:2016-01-08

网络出版日期:2016-02-26

作者单位    点击查看

Tao Li:Department of Physics, Beijing Jiaotong University, Beijing 100044, China
Mingyang Li:Department of Physics, Beijing Jiaotong University, Beijing 100044, China
and Junming Huang:Department of Physics, Beijing Jiaotong University, Beijing 100044, China

联系人作者:联系作者(13272025@bjtu.edu.cn)

备注:We thank Prof. G. R. Jin for the helpful discussions. This work was supported by the National Innovation Experiment Program for University Students under Grant No. BJTU 150170042.

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引用该论文

Tao Li, Mingyang Li, and Junming Huang, "Quantum Fisher information of triphoton states," Chinese Optics Letters 14(3), 032701 (2016)

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