Transmission of Quantum Fisher Information through Fluctuating Quantum Fields

被引:2
作者
Jin, Yao [1 ]
机构
[1] Guiyang Univ, Sch Elect & Commun Engn, Guiyang 550005, Guizhou, Peoples R China
基金
中国国家自然科学基金;
关键词
Fluctuating quantum fields; quantum Fisher information; quantum teleportation; VACUUM FLUCTUATIONS; TELEPORTATION; COMPUTATION; STATE; DISTANCE;
D O I
10.1002/andp.201800090
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Transmission of quantum Fisher information (QFI) of initially disentangled parties is studied and the results show that the indirect correlations generated by the environment, which is considered as a bath of fluctuating quantum fields, will help transmit the quantum information. Specifically, using N initially disentangled atoms one in an excited state carried by one party (the sender, Alice) and the other in the ground state carried by the other parties (the receivers: Bob1, Bob2,..., Bob(N-1)), the phase factor of the state of another atom held by Alice can be transmitted from Alice to Bob with proper time. The transmitted QFI of the phase factor for each receiver has been calculated as a function of the transmitted distance as well as the measurement time and is found to be in relation with the concurrence of the pair of atoms that the sender and the receiver carry. For each transmitted distance, there exists an optimal measurement time to obtain the maximal transmitted QFI, which is in relation with the total number of receivers.
引用
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页数:5
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共 39 条
  • [31] Communications - Quantum teleportation across the Danube
    Ursin, R
    Jennewein, T
    Aspelmeyer, M
    Kaltenbaek, R
    Lindenthal, M
    Walther, P
    Zeilinger, A
    [J]. NATURE, 2004, 430 (7002) : 849 - 849
  • [32] Optimal teleportation with a mixed state of two qubits
    Verstraete, F
    Verschelde, H
    [J]. PHYSICAL REVIEW LETTERS, 2003, 90 (09) : 4
  • [33] Quantum teleportation of multiple degrees of freedom of a single photon
    Wang, Xi-Lin
    Cai, Xin-Dong
    Su, Zu-En
    Chen, Ming-Cheng
    Wu, Dian
    Li, Li
    Liu, Nai-Le
    Lu, Chao-Yang
    Pan, Jian-Wei
    [J]. NATURE, 2015, 518 (7540) : 516 - 519
  • [34] Entanglement of formation of an arbitrary state of two qubits
    Wootters, WK
    [J]. PHYSICAL REVIEW LETTERS, 1998, 80 (10) : 2245 - 2248
  • [35] Enhancing teleportation of quantum Fisher information by partial measurements
    Xiao, Xing
    Yao, Yao
    Zhong, Wo-Jun
    Li, Yan-Ling
    Xie, Ying-Mao
    [J]. PHYSICAL REVIEW A, 2016, 93 (01)
  • [36] Distribution of quantum Fisher information in asymmetric cloning machines
    Xiao, Xing
    Yao, Yao
    Zhou, Lei-Ming
    Wang, Xiaoguang
    [J]. SCIENTIFIC REPORTS, 2014, 4
  • [37] Protection of entanglement between two two-level atoms
    Zhang, Anwei
    [J]. LASER PHYSICS LETTERS, 2017, 14 (08)
  • [38] Fisher information under decoherence in Bloch representation
    Zhong, Wei
    Sun, Zhe
    Ma, Jian
    Wang, Xiaoguang
    Nori, Franco
    [J]. PHYSICAL REVIEW A, 2013, 87 (02)
  • [39] Temperature-dependent Casimir-Polder forces on polarizable molecules
    Zhu, Zhiying
    Yu, Hongwei
    Wang, Bin
    [J]. PHYSICAL REVIEW A, 2012, 86 (05):