摘要We propose a scheme to implement two-bit quantum phase gates and one-bit unitary gates by using the two-mode two-photon Jaynes--Cummings model. The entanglement between the atom and cavity is also investigated in the presence of phase decoherence. It is found that there is stationary entanglement that is sensitive with the detuning.
Abstract：We propose a scheme to implement two-bit quantum phase gates and one-bit unitary gates by using the two-mode two-photon Jaynes--Cummings model. The entanglement between the atom and cavity is also investigated in the presence of phase decoherence. It is found that there is stationary entanglement that is sensitive with the detuning.
ZHANG Jian-Song;XU Jing-Bo. One Atom in an Optical Cavity: Entanglement and Applications to Quantum Computation[J]. 中国物理快报, 2008, 25(1): 24-26.
ZHANG Jian-Song, XU Jing-Bo. One Atom in an Optical Cavity: Entanglement and Applications to Quantum Computation. Chin. Phys. Lett., 2008, 25(1): 24-26.
[1] Cirac J I and Zoller P 2000 Nature 404 579 [2] Gardiner C W 1991 Quantum Noise (Berlin: Springer) [3] Gou S C 1989 Phys. Rev. A 40 5116 Li S B and Xu J B 2005 Phys. Lett. A 337 321 [4] Nielsen M A and Chuang I L 2000 Quantum Computationand Quantum Information (Cambridge: Cambridge University Press) [5] Rauschenbeutel A, Nogues G, Osnaghi S, Bertet P,Brune M, Raimond J M and Haroche S 1999 Phys. Rev. Lett. 83 5166 Li S B and Xu J B 2003 Chin. Phys. Lett. 20 985 Lu D M and Zheng S B 2007 Chin. Phys. Lett. 24 596 [6] Cirac J I and Zoller P 1995 Phys. Rev. Lett. 74 4091 [7] Gerhenfeld N A and Chuang I L 1997 Science 275 350 Vandersypen L M K and Chuang I L 2001 Rev. Mod. Phys. 76 1037 [8] Barenco A, Deutsch D, Ekert A and Jozsa R 1995 Phys. Rev.Lett. 74 4083 [9] Biswas A and Agarwal G S 2004 Phys. Rev. A 69 062306 [10] Zubairy M S, Kim M and Scully M O 2003 Phys. Rev. A 68 033820 [11] Milburn G M 1991 Phys. Rev. A 44 5401 [12] Moya-Cessa H, B\v{uzek V, Kim M S andKnight P L 1993 Phys. Rev. A 48 3900 [13] Hill S and Wootters W K 1997 Phys. Rev. Lett. 78 5022 Wootters W K 1998 Phys. Rev. Lett. 80 2245 [14] Vedral V, Plenio M B, Rippin M A and Knight P L 1997 Phys. Rev. Lett. 78 2275 [15] Horodecki M, Horodecki P and Horodecki P 1996 Phys.Lett. A 223 1 [16] Paz J P and Zurek W H 2002 Environment-InducedDecoherence and the Transition From Quantum to Classical (LectureNotes in Physics, Vol. 587) (Berlin: Springer) p 77
2008, Vol. 25 
