Entanglement dynamics and decoherence of three-qubit system in a fermionic environment

被引:23
作者
Ma, XS [1 ]
Wang, AM [1 ]
Yang, XD [1 ]
You, H [1 ]
机构
[1] Univ Sci & Technol, Dept Modern Phys, Hefei 230026, Peoples R China
来源
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2005年 / 38卷 / 12期
关键词
D O I
10.1088/0305-4470/38/12/016
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the entanglement dynamics of the three-qubit system in a symmetry-broken environment consisting of a fermionic bath. Decoherence induced by the bath is analysed. We find that the entanglement of states will decrease or remain unchanged under the system-bath interaction. The class of decoherence-free states of the three-qubit system of our model has been found out.
引用
收藏
页码:2761 / 2772
页数:12
相关论文
共 24 条
[11]   Two-qubit entanglement dynamics in a symmetry-broken environment [J].
Lucamarini, M ;
Paganelli, S ;
Mancini, S .
PHYSICAL REVIEW A, 2004, 69 (06) :062308-1
[12]   Generation of the four-photon W state and other multiphoton entangled states using parametric down-conversion -: art. no. 052308 [J].
Mikami, H ;
Li, YM ;
Kobayashi, T .
PHYSICAL REVIEW A, 2004, 70 (05) :052308-1
[13]  
Osborne TJ, 2002, PHYS REV A, V66, DOI 10.1103/PhysRevA.66.032110
[14]   Decoherence slowing down in a symmetry-broken environment [J].
Paganelli, S ;
de Pasquale, F ;
Giampaolo, SM .
PHYSICAL REVIEW A, 2002, 66 (05) :6
[15]   Separability criterion for density matrices [J].
Peres, A .
PHYSICAL REVIEW LETTERS, 1996, 77 (08) :1413-1415
[16]  
SACHDEV, 1999, QUANTUMN PHASE TRANS
[17]   Entanglement dynamics and quantum-state transport in spin chains [J].
Subrahmanyam, V .
PHYSICAL REVIEW A, 2004, 69 (03) :034304-1
[18]   Experimental demonstration of quantum secret sharing [J].
Tittel, W ;
Zbinden, H ;
Gisin, N .
PHYSICAL REVIEW A, 2001, 63 (04) :1-6
[19]   Short-time decoherence for general system-environment interactions [J].
Tolkunov, D ;
Privman, V .
PHYSICAL REVIEW A, 2004, 69 (06) :062309-1
[20]   Computable measure of entanglement [J].
Vidal, G ;
Werner, RF .
PHYSICAL REVIEW A, 2002, 65 (03) :1-11