ENTANGLEMENT DYNAMICS OF THREE-QUBIT SYSTEM IN A COMMON NON-MARKOVIAN RESERVOIR

被引：1

作者：

Wang, Yan-Hui ^{[1
]}

Man, Zhong-Xiao ^{[1
]}

Zhang, Ying-Jie ^{[1
]}

Xia, Yun-Jie ^{[1
]}

机构：

[1] Qufu Normal Univ, Shandong Prov Key Lab Laser Polarizat & Informat, Dept Phys, Qufu 273165, Peoples R China

来源：

INTERNATIONAL JOURNAL OF QUANTUM INFORMATION | 2011年 / 9卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Non-Markovian environment; entanglement sudden death; entanglement sudden birth;

D O I：

10.1142/S0219749911007770

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

We study the entanglement dynamics of three two-level atoms interacting with a structured reservoir. The atoms are initially prepared in a mixed W state while the reservoir is in the vacuum. We show the dependence of entanglement dynamics on the purity of initial atomic state and on the amount of non-Markovianity. When the initial state of atoms is in a W pure state, the entanglement will decay asymptotically, while it vanishes in a finite time if the initial state is in a mixed W state. In addition, as the memory effect of the environment, entanglement can partially revive after it vanishes, and the revival degree is dependent on the strength of non-Markovian effect. In the end, we consider the entanglement generation and its evolution when the initial state of the atoms system is completely separable.

引用

页码：1157 / 1165

页数：9

共 18 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] Non-Markovian effects on the dynamics of entanglement [J].

Bellomo, B. ;

Lo Franco, R. ;

Compagno, G. .

PHYSICAL REVIEW LETTERS, 2007, 99 (16)

[3] Entanglement dynamics of two independent qubits in environments with and without memory [J].

Bellomo, B. ;

Lo Franco, R. ;

Compagno, G. .

PHYSICAL REVIEW A, 2008, 77 (03)

[4]

BREUER HP, 2002, THEARY OPEN QUANTUM

[5]

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

[6] Stability of macroscopic entanglement under decoherence -: art. no. 180403 [J].

Dür, W ;

Briegel, HJ .

PHYSICAL REVIEW LETTERS, 2004, 92 (18) :180403-1

[7] Off-resonant entanglement generation in a lossy cavity [J].

Francica, F. ;

Maniscalco, S. ;

Piilo, J. ;

Plastina, F. ;

Suominen, K-A. .

PHYSICAL REVIEW A, 2009, 79 (03)

[8] Multiparticle entanglement under the influence of decoherence [J].

Guehne, O. ;

Bodoky, F. ;

Blaauboer, M. .

PHYSICAL REVIEW A, 2008, 78 (06)

[9] Heralded entanglement between atomic ensembles: Preparation, decoherence, and scaling [J].

Laurat, J. ;

Choi, K. S. ;

Deng, H. ;

Chou, C. W. ;

Kimble, H. J. .

PHYSICAL REVIEW LETTERS, 2007, 99 (18)

[10] Effect of the dipole-dipole interaction for two atoms with different couplings in a non-Markovian environment [J].

Li, Yang ;

Zhou, Jiang ;

Guo, Hong .

PHYSICAL REVIEW A, 2009, 79 (01)

← 1 2 →