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The entanglement character between a two-level atom and a two-mode field as well as two-level atoms in the non-degenerate two photons Tavis-Cummings model in the resonance and non-resonance cases have been investigated, and the analytical expression about entanglement is obtained. Based on two kinds of initial states, the effects of field frequency, atomic frequency and dipole-dipole coupling between atoms on the entanglement are shown in detail. The cases of resonance and non-resonance are compared.
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Keywords:
- T-C model /
- resonance /
- concurrence /
- dipole-dipole coupling
[1] ［1]Bennett C H, Brassard G, Crépeau C, Jozsa R, Peres A, Wootters W K 1993 Phys. Rev. Lett. 70 1895
[2] ［2]Ekert A K 1991 Phys. Rev. Lett. 67 661
[3] ［3]Shor P W 1995 Phys. Rev. A 52 2493
[4] ［4]Bennett C H, Wiesner S 1992 Phys. Rev. Lett. 69 2881
[5] ［5]Tavis M, Cummings F W 1968 Phys. Rev. A 170 379
[6] ［6]Liu W Y, An Y Y, Yang Z Y 2007 Chin. Phys. 16 3704
[7] ［7]Zhang Y J, Xia Y J, Ren T Q, Du X M, Liu Y L 2009 Acta Phys. Sin.58 722（in Chinese）［张英杰、夏云杰、任廷琦、杜秀梅、刘玉玲 2009 58 722］
[8] ［8]Xia Y J, Zhang Y J, Zhou Y 2008 Chin. Phys. B 17 21
[9] ［9]Shan C J, Xia Y J 2006 Acta Phys. Sin. 55 1585（in Chinese）［单传家、夏云杰 2006 55 1585］
[10] ［10]Zhang Y J, Zhou Y, Xia Y J 2008 Acta Phys. Sin. 57 21（in Chinese）［张英杰、周原、夏云杰 2008 57 21］
[11] ［11]Zhang G F, Chen Z Y 2007 Optics Comm. 275 274
[12] ［12]Xiong H N, Guo H, Jiang J, Chen J, Tang L Y 2006 Acta Phys. Sin. 55 2720（in Chinese）［熊恒娜、郭红、江健、 唐丽艳 2006 55 2720］
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[1] ［1]Bennett C H, Brassard G, Crépeau C, Jozsa R, Peres A, Wootters W K 1993 Phys. Rev. Lett. 70 1895
[2] ［2]Ekert A K 1991 Phys. Rev. Lett. 67 661
[3] ［3]Shor P W 1995 Phys. Rev. A 52 2493
[4] ［4]Bennett C H, Wiesner S 1992 Phys. Rev. Lett. 69 2881
[5] ［5]Tavis M, Cummings F W 1968 Phys. Rev. A 170 379
[6] ［6]Liu W Y, An Y Y, Yang Z Y 2007 Chin. Phys. 16 3704
[7] ［7]Zhang Y J, Xia Y J, Ren T Q, Du X M, Liu Y L 2009 Acta Phys. Sin.58 722（in Chinese）［张英杰、夏云杰、任廷琦、杜秀梅、刘玉玲 2009 58 722］
[8] ［8]Xia Y J, Zhang Y J, Zhou Y 2008 Chin. Phys. B 17 21
[9] ［9]Shan C J, Xia Y J 2006 Acta Phys. Sin. 55 1585（in Chinese）［单传家、夏云杰 2006 55 1585］
[10] ［10]Zhang Y J, Zhou Y, Xia Y J 2008 Acta Phys. Sin. 57 21（in Chinese）［张英杰、周原、夏云杰 2008 57 21］
[11] ［11]Zhang G F, Chen Z Y 2007 Optics Comm. 275 274
[12] ［12]Xiong H N, Guo H, Jiang J, Chen J, Tang L Y 2006 Acta Phys. Sin. 55 2720（in Chinese）［熊恒娜、郭红、江健、 唐丽艳 2006 55 2720］
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