Induced entanglement revival and entanglement protection in a two qubit system

被引：6

作者：

Rossi, R., Jr. ^{[1
]}

机构：

[1] Univ Fed Vicosa, BR-35690000 Florestal, MG, Brazil

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2013年 / 392卷 / 10期

关键词：

Entanglement protection; Quantum information; Entanglement dynamics; SUDDEN-DEATH; DECOHERENCE; GATES;

D O I：

10.1016/j.physa.2013.01.057

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A system of two initially entangled qubits interacting with a bosonic environment is considered. The interaction induces a loss of the initial entanglement of the two qubits, and for specific initial states it causes entanglement sudden death. An investigation of the modifications on the entanglement dynamics by a single pulse control field, performed in the two qubit system, shows that the control field can not only protect entangled states against sudden death but also induce a revival of entanglement in the two qubit system. (C) 2013 Elsevier B.V. All rights reserved.

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收藏

页码：2615 / 2622

页数：8

相关论文

共 25 条

[1] 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

[2] Disentanglement in bipartite continuous-variable systems [J].

Barbosa, F. A. S. ;

de Faria, A. J. ;

Coelho, A. S. ;

Cassemiro, K. N. ;

Villar, A. S. ;

Nussenzveig, P. ;

Martinelli, M. .

PHYSICAL REVIEW A, 2011, 84 (05)

[3] Quantum computing using dissipation to remain in a decoherence-free subspace [J].

Beige, A ;

Braun, D ;

Tregenna, B ;

Knight, PL .

PHYSICAL REVIEW LETTERS, 2000, 85 (08) :1762-1765

[4]

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

[5] Experimental Inhibition of Decoherence on Flying Qubits via "Bang-Bang'' Control [J].

Damodarakurup, S. ;

Lucamarini, M. ;

Di Giuseppe, G. ;

Vitali, D. ;

Tombesi, P. .

PHYSICAL REVIEW LETTERS, 2009, 103 (04)

[6] Preserving quantum states using inverting pulses: A super-zeno effect [J].

Dhar, D ;

Grover, LK ;

Roy, SM .

PHYSICAL REVIEW LETTERS, 2006, 96 (10)

[7] 2-BIT GATES ARE UNIVERSAL FOR QUANTUM COMPUTATION [J].

DIVINCENZO, DP .

PHYSICAL REVIEW A, 1995, 51 (02) :1015-1022

[8] Quantum Zeno subspaces [J].

Facchi, P ;

Pascazio, S .

PHYSICAL REVIEW LETTERS, 2002, 89 (08)

[9] Quantum computing using single photons and the Zeno effect [J].

Franson, JD ;

Jacobs, BC ;

Pittman, TB .

PHYSICAL REVIEW A, 2004, 70 (06) :062302-1

[10] Effect of control procedures on the evolution of entanglement in open quantum systems [J].

Goyal, Sandeep K. ;

Banerjee, Subhashish ;

Ghosh, Sibasish .

PHYSICAL REVIEW A, 2012, 85 (01)