Protecting Distribution Entanglement by Weak Measurement and Reversal under Various Decoherence Sources

被引：17

作者：

Wang Qiong ^{[1
]}

Yao Chun-Mei ^{[1
]}

机构：

[1] Hunan Univ Arts & Sci, Dept Phys & Elect Sci, Hunan Prov Key Lab Photoelect Informat Integrat O, Changde 415000, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2014年 / 61卷 / 04期

基金：

中国国家自然科学基金;

关键词：

weak measurement and reversal; quantum entanglement; decoherence; QUANTUM ENTANGLEMENT; DYNAMICS; STATE; COMMUNICATION; DISTILLATION; PURIFICATION; PARTICLE; TIME; SPIN;

D O I：

10.1088/0253-6102/61/4/10

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Protection of entanglement from disturbance of the environment is an essential task in quantum information processing. We examine the validity and limitation of the weak measurement and reversal (WMR) operation in the protection of distributed entanglement from various decoherence sources. Since the entanglement variation can be investigated analytically for an arbitrarily entangled bipartite pure state under three kinds of typical noisy quantum channels, we show explicitly that the WMR operation indeed helps for protecting distributed entanglement from amplitude damping and phase damping, but not for depolarizing. Experimental feasibility for testing our results is discussed using current laboratory techniques.

引用

页码：464 / 468

页数：5

共 42 条

[1] HOW THE RESULT OF A MEASUREMENT OF A COMPONENT OF THE SPIN OF A SPIN-1/2 PARTICLE CAN TURN OUT TO BE 100 [J].

AHARONOV, Y ;

ALBERT, DZ ;

VAIDMAN, L .

PHYSICAL REVIEW LETTERS, 1988, 60 (14) :1351-1354

[2] Environment-induced sudden death of entanglement [J].

Almeida, M. P. ;

de Melo, F. ;

Hor-Meyll, M. ;

Salles, A. ;

Walborn, S. P. ;

Ribeiro, P. H. Souto ;

Davidovich, L. .

SCIENCE, 2007, 316 (5824) :579-582

[3] COMMUNICATION VIA ONE-PARTICLE AND 2-PARTICLE OPERATORS ON EINSTEIN-PODOLSKY-ROSEN STATES [J].

BENNETT, CH ;

WIESNER, SJ .

PHYSICAL REVIEW LETTERS, 1992, 69 (20) :2881-2884

[4] TELEPORTING AN UNKNOWN QUANTUM STATE VIA DUAL CLASSICAL AND EINSTEIN-PODOLSKY-ROSEN CHANNELS [J].

BENNETT, CH ;

BRASSARD, G ;

CREPEAU, C ;

JOZSA, R ;

PERES, A ;

WOOTTERS, WK .

PHYSICAL REVIEW LETTERS, 1993, 70 (13) :1895-1899

[5] Remote state preparation [J].

Bennett, CH ;

DiVincenzo, DP ;

Shor, PW ;

Smolin, JA ;

Terhal, BM ;

Wootters, WK .

PHYSICAL REVIEW LETTERS, 2001, 87 (07) :77902-1

[6] Purification of noisy entanglement and faithful teleportation via noisy channels [J].

Bennett, CH ;

Brassard, G ;

Popescu, S ;

Schumacher, B ;

Smolin, JA ;

Wootters, WK .

PHYSICAL REVIEW LETTERS, 1996, 76 (05) :722-725

[7] Concentrating partial entanglement by local operations [J].

Bennett, CH ;

Bernstein, HJ ;

Popescu, S ;

Schumacher, B .

PHYSICAL REVIEW A, 1996, 53 (04) :2046-2052

[8]

Chuang I. N., 2000, Quantum Computation and Quantum Information

[9] Distributed quantum computation over noisy channels [J].

Cirac, JI ;

Ekert, AK ;

Huelga, SF ;

Macchiavello, C .

PHYSICAL REVIEW A, 1999, 59 (06) :4249-4254

[10] Ultrasensitive Beam Deflection Measurement via Interferometric Weak Value Amplification [J].

Dixon, P. Ben ;

Starling, David J. ;

Jordan, Andrew N. ;

Howell, John C. .

PHYSICAL REVIEW LETTERS, 2009, 102 (17)

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