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Establishing three different environment models (i.e., single reservoir model, common reservoir model and independent reservoir model), we investigate the evolutional characteristic of the entangled system initially in Bell-like state by the pseudomode method. Through comparing the entanglement decays under the three different environment models, we find that the entangled Bell-like state cos θ |ee> + sin θ |gg> will be kept in the single reservoir model for a time longer than in the other two models. However, the entanglement decay behavior of Bell-like state cos θ |eg> + sin θ |ge> is dependent on the specific environment model. Meanwhile, the comparison of entanglement decay between the above two Bell-like states at the same environment models is performed.
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Keywords:
- quantum entanglement /
- concurrence /
- pseudomode method
[1] Ai Q, Wang Y D, Long G L, Sun C P 2009 Sci. China-Phys. Mech. Astron. 52 1898
[2] Xu G F, Kwek L C, Tong D M 2012 Sci. China-Phys. Mech. Astron. 55 808
[3] Ma X S, Ren M F, Zhao G X 2011 Sci. China-Phys. Mech. Astron. 54 1833
[4] Qian Y, Zhang Y Q, Xu J B 2012 Chin. Sci. Bull. 57 1637
[5] Wu R B, Zhang J, Li C W, Long G L, Tarn T J 2012 Chin. Sci. Bull. 57 2194
[6] Yu T, Eberly J H 2004 Phys. Rev. Lett. 93 140404
[7] Yu T, Eberly J H 2009 Science 323 598
[8] Zhang Y J, Man Z X, Xia Y J, Guo G C 2010 Eur. Phys. J. D 58 397
[9] Bellomo B, Franco R L, Maniscalco S, Compagno G 2008 Phys. Rev. A 78 060302
[10] Han F, Zhang M H 2011 Inter. Quantum Information 9 1533
[11] Yu T, Eberly J H 2007 Quantum Inf. Comp. 7 459
[12] Wootters W K 1998 Phys. Rev. Lett. 80 2245
[13] Li Y, Guo H 2009 e-print arXiv:quant-ph/09090375
[14] Zhang Y J, Man Z X, Xia Y J 2009 Eur. Phys. J. D 55 173
[15] Garraway B M 1997 Phys. Rev. A 55 4636
[16] Lopez C E, Romero G, Lastra F, Solano E, Retamal J C 2008 Phys. Rev. Lett. 101 080503
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[1] Ai Q, Wang Y D, Long G L, Sun C P 2009 Sci. China-Phys. Mech. Astron. 52 1898
[2] Xu G F, Kwek L C, Tong D M 2012 Sci. China-Phys. Mech. Astron. 55 808
[3] Ma X S, Ren M F, Zhao G X 2011 Sci. China-Phys. Mech. Astron. 54 1833
[4] Qian Y, Zhang Y Q, Xu J B 2012 Chin. Sci. Bull. 57 1637
[5] Wu R B, Zhang J, Li C W, Long G L, Tarn T J 2012 Chin. Sci. Bull. 57 2194
[6] Yu T, Eberly J H 2004 Phys. Rev. Lett. 93 140404
[7] Yu T, Eberly J H 2009 Science 323 598
[8] Zhang Y J, Man Z X, Xia Y J, Guo G C 2010 Eur. Phys. J. D 58 397
[9] Bellomo B, Franco R L, Maniscalco S, Compagno G 2008 Phys. Rev. A 78 060302
[10] Han F, Zhang M H 2011 Inter. Quantum Information 9 1533
[11] Yu T, Eberly J H 2007 Quantum Inf. Comp. 7 459
[12] Wootters W K 1998 Phys. Rev. Lett. 80 2245
[13] Li Y, Guo H 2009 e-print arXiv:quant-ph/09090375
[14] Zhang Y J, Man Z X, Xia Y J 2009 Eur. Phys. J. D 55 173
[15] Garraway B M 1997 Phys. Rev. A 55 4636
[16] Lopez C E, Romero G, Lastra F, Solano E, Retamal J C 2008 Phys. Rev. Lett. 101 080503
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