A new coherence measure based on fidelity

被引：37

作者：

Liu, C. L. ^{[1
]}

Zhang, Da-Jian ^{[1
,2
]}

Yu, Xiao-Dong ^{[1
]}

Ding, Qi-Ming ^{[1
]}

Liu, Longjiang ^{[3
]}

机构：

[1] Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China

[2] Shandong Normal Univ, Sch Phys & Elect, Jinan 250014, Shandong, Peoples R China

[3] Henan Univ Technol, Coll Sci, Zhengzhou 450001, Henan, Peoples R China

来源：

QUANTUM INFORMATION PROCESSING | 2017年 / 16卷 / 08期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Quantifying coherence; Coherence measure; Fidelity; Qubit states; QUANTUM; STATES;

D O I：

10.1007/s11128-017-1650-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantifying coherence is an essential endeavor for both quantum foundations and quantum technologies. In this paper, we put forward a quantitative measure of coherence by following the axiomatic definition of coherence measures introduced in Baumgratz et al. (PhysRev Lett 113: 140401, 2014). Ourmeasure is based on fidelity and analytically computable for arbitrary states of a qubit. As one of its applications, we show that our measure can be used to examine whether a pure qubit state can be transformed into another pure or mixed qubit state only by incoherent operations.

引用

页数：10

共 40 条

[1] Aberg J, ARXIVQUANTPH0612146
[2] Catalytic Coherence
Aberg, Johan
[J]. PHYSICAL REVIEW LETTERS, 2014, 113 (15)
[3] Relations between Coherence and Path Information
Bagan, Emilio
Bergou, Janos A.
Cottrell, Seth S.
Hillery, Mark
[J]. PHYSICAL REVIEW LETTERS, 2016, 116 (16)
[4] Quantifying Coherence
Baumgratz, T.
Cramer, M.
Plenio, M. B.
[J]. PHYSICAL REVIEW LETTERS, 2014, 113 (14)
[5] Duality of quantum coherence and path distinguishability
Bera, Manabendra Nath
Qureshi, Tabish
Siddiqui, Mohd Asad
Pati, Arun Kumar
[J]. PHYSICAL REVIEW A, 2015, 92 (01):
[6] Frozen Quantum Coherence
Bromley, Thomas R.
Cianciaruso, Marco
Adesso, Gerardo
[J]. PHYSICAL REVIEW LETTERS, 2015, 114 (21)
[7] Coherence-breaking channels and coherence sudden death
Bu, Kaifeng
Swati
Singh, Uttam
Wu, Junde
[J]. PHYSICAL REVIEW A, 2016, 94 (05)
[8] Complementarity relations for quantum coherence
Cheng, Shuming
Hall, Michael J. W.
[J]. PHYSICAL REVIEW A, 2015, 92 (04):
[9] Chuang I. N., 2000, Quantum Computation and Quantum Information
[10] Using Entanglement Against Noise in Quantum Metrology
Demkowicz-Dobrzanski, Rafal
Maccone, Lorenzo
[J]. PHYSICAL REVIEW LETTERS, 2014, 113 (25)

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