On decoherence in quantum clock synchronization

被引：16

作者：

Boixo, S. ^{[1
]}

Caves, C. M. ^{[1
]}

Datta, A. ^{[1
]}

Shaji, A. ^{[1
]}

机构：

[1] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

来源：

LASER PHYSICS | 2006年 / 16卷 / 11期

关键词：

D O I：

10.1134/S1054660X06110065

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study two quantum versions of the Eddington clock-synchronization protocol in the presence of decoherence. The first protocol uses maximally entangled states to achieve the Heisenberg limit for clock synchronization. The second protocol achieves the limit without using entanglement. We show the equivalence of the two protocols under any single-qubit decoherence model that does not itself provide synchronization information.

引用

页码：1525 / 1532

页数：8

共 16 条

[1] Optimal frequency measurements with maximally correlated states [J].

Bollinger, JJ ;

Itano, WM ;

Wineland, DJ ;

Heinzen, DJ .

PHYSICAL REVIEW A, 1996, 54 (06) :R4649-R4652

[2]

Braginskii V. B., 1975, Soviet Physics - Uspekhi, V17, P644, DOI 10.1070/PU1975v017n05ABEH004362

[3] STATISTICAL DISTANCE AND THE GEOMETRY OF QUANTUM STATES [J].

BRAUNSTEIN, SL ;

CAVES, CM .

PHYSICAL REVIEW LETTERS, 1994, 72 (22) :3439-3443

[4] ON THE MEASUREMENT OF A WEAK CLASSICAL FORCE COUPLED TO A QUANTUM-MECHANICAL OSCILLATOR .1. ISSUES OF PRINCIPLE [J].

CAVES, CM ;

THORNE, KS ;

DREVER, RWP ;

SANDBERG, VD ;

ZIMMERMANN, M .

REVIEWS OF MODERN PHYSICS, 1980, 52 (02) :341-392

[5] Quantum algorithm for distributed clock synchronization [J].

Chuang, IL .

PHYSICAL REVIEW LETTERS, 2000, 85 (09) :2006-2009

[6] Quantum methods for clock synchronization: Beating the standard quantum limit without entanglement [J].

de Burgh, M ;

Bartlett, SD .

PHYSICAL REVIEW A, 2005, 72 (04)

[7] Quantum-enhanced measurements: Beating the standard quantum limit [J].

Giovannetti, V ;

Lloyd, S ;

Maccone, L .

SCIENCE, 2004, 306 (5700) :1330-1336

[8] Improvement of frequency standards with quantum entanglement [J].

Huelga, SF ;

Macchiavello, C ;

Pellizzari, T ;

Ekert, AK ;

Plenio, MB ;

Cirac, JI .

PHYSICAL REVIEW LETTERS, 1997, 79 (20) :3865-3868

[9] Quantum clock synchronization based on shared prior entanglement [J].

Jozsa, R ;

Abrams, DS ;

Dowling, JP ;

Williams, CP .

PHYSICAL REVIEW LETTERS, 2000, 85 (09) :2010-2013

[10]

Nielsen Michael A, 2002, Quantum computation and quantum information, DOI DOI 10.1119/1.1463744

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