Sudden death of entanglement of two atoms interacting with thermal fields

doi:10.1088/1674-1056/20/8/080303

Abstract We investigate the entanglement dynamics of two initially entangled atoms each interacting with a thermal field. We show that the two entangled atoms become completely disentangled in a finite time and that the lost information cannot return to the atomic system when the mean photon number of the thermal field exceeds a critical value (3.3584), even though the whole system is lossless. Then we study how the detuning between the atomic transition frequency and the field frequency and the disparity between two coupling rates would affect the evolution of the entanglement of the atomic system.

Keywords: entanglement sudden death thermal field asymmetric detuning

Received: 09 September 2010
Revised: 02 March 2011
Accepted manuscript online:

PACS:	03.65.Ud	(Entanglement and quantum nonlocality)
	42.50.Pq	(Cavity quantum electrodynamics; micromasers)
	42.50.Dv	(Quantum state engineering and measurements)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974028), the Natural Science Foundation of Fujian Province of China (Grant No. 2009J06002), and the Funds from the State Key Laboratory Breeding Base of Photocatalysis.

Cite this article:

Luo Cheng-Li(罗成立), Miao Long(缪龙), Zheng Xiao-Lan(郑小兰), Chen Zi-Hong(陈子翃), and Liao Chang-Geng(廖长庚) Sudden death of entanglement of two atoms interacting with thermal fields 2011 Chin. Phys. B 20 080303

[1]	Imai H and Hayashi M 2006 Quantum Computation and Information (Berlin: Springer)
[2]	Bennett C H and DiVincenzo D P 2000 Nature 404 247
[3]	Zheng S B 2005 Phys. Rev. Lett. 95 080502
[4]	Cubitt T S, Verstraete F and Cirac J I 2006 Phys. Rev. A 71 052308
[5]	Zheng S B and Guo G C 2006 Phys. Rev. A 73 032329
[6]	Zheng S B 2010 Chin. Phys. B 19 044204
[7]	Zheng S B 2010 Chin. Phys. B 19 064204
[8]	Yu T and Eberly J H 2004 Phys. Rev. Lett. 93 140404
[9]	Yu T and Eberly J H 2006 Opt. Commun. 264 393
[10]	Y"onacc M, Yu T and Eberly J H 2006 J. Phys. B: At. Mol. Opt. Phys. 39 S621
[11]	Y"onacc M and Eberly J H 2008 Opt. Lett. 33 270
[12]	Luo C L, Liao C G and Chen Z H 2010 Opt. Commun. 283 3168
[13]	Kim M S, Lee J Y, Ahn D and Knight P L 2002 Phys. Rev. A 65 040101(R)
[14]	Han F and Xia Y J 2009 Chin. Phys. B 18 5144
[15]	Marek P, Lee J and Kim M S 2008 Phys. Rev. A 77 032302
[16]	Zheng Q, Zhang X P and Ren Z Z 2008 Chin. Phys. B 17 3553
[17]	Gong Y X, Zhang Y S, Dong Y L, Niu X L, Huang Y F and Guo G C 2008 Phys. Rev. A 78 042103
[18]	Tolkunov D, Privman V and Aravind P K 2005 Phys. Rev. A 71 060308(R)
[19]	Paz J P and Roncaglia A J 2008 Phys. Rev. Lett. 100 220401
[20]	Cui H T, Li K and Yi X X 2007 Phys. Lett. A bf 365 44
[21]	Man Z X, Xia Y J and An N B 2009 Eur. Phys. J. D 53 229
[22]	Almeida M P, de Melo F, Hor-Meyll M, Salles A, Walborn S P, Souto Ribeiro P H and Davidovich L 2007 Science 316 579
[23]	Laurat J, Choi K S, Deng H, Chou C W and Kimble H J 2007 Phys. Rev. Lett. 99 180504
[24]	Zheng S B 2007 Phys. Rev. A 75 032114
[25]	Wootters W K 1998 Phys. Rev. Lett. 80 2245
[26]	Zheng S B and Guo G C 2000 Phys. Rev. Lett. 85 2392
[27]	Eberly J H, Narozhny N B and Sanchez-Mondragon J J 1980 Phys. Rev. Lett. 44 1323

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