Preparation and transfer of entanglement in atomic ensembles interacting with cavity fields

Abstract

The preparation and transfer of entanglement in atomic ensembles interacting with cavity fields is investigated. The results show that two pairs of quasi-Bell states (entangled coherent states) between two atomic ensembles can be explicitly generated through quasi-Bell measurements on cavity fields. It is also indicated that the quantum entanglement between two cavity fields can be perfectly transferred into two atomic ensembles.

Keywords

Coherent State / Entangle State / Success Probability / Bell State / Quantum Entanglement

References

[1] GreenbergerD. M., HorneM. A., ShimonyA., ZeilingerA.. Am. J. Phys., 1990, 58: 1131

[2] MerminN. D.. Phys. Rev. Lett., 1990, 65: 1838

[3] BollingerJ. J., ItanoW. M., WinelandD. J., HeinzenD. J.. Phys. Rev. A, 1996, 54: 4649

[4] GottesmanD., ChuangI. L.. Nature, 1999, 402: 390

[5] NielsonM. A., ChuangI. L.. Quantum Computation and Quantum Information, 2000, England, Cambridge University Press

[6] DuanL. M., LukinM. D., CiracJ. I., ZollerP.. Nature, 2001, 414: 413

[7] LukinM. D., YelinS. F., FleischhauerM.. Phys. Rev. Lett., 2000, 84: 4232

[8] DantanA., TrepsN., BramatiA., PinardM.. Phys. Rev. Lett., 2005, 94: 050502

[9] KuangL. M., ZengA. H., KuangZ. H.. Chin. Phys. Lett., 2004, 21: 999

[10] KuangL. M., ZhouL.. Phys. Rev. A, 2003, 68: 043606

[11] ParkinsA. S., SolanoE., CiracJ. I.. Phys. Rev. Lett., 2006, 96: 053602

[12] HolsteinT., PrimakoffH.. Phys. Rev., 1940, 58: 1098

[13] WangX.. Phys. Rev. A, 2001, 64: 022302

[14] LiX., ZhangY. J., XiaY. J.. Optoelectronics Letters, 2008, 4: 0467

[15] LiaoJ. Q., KuangL. M.. Chin. Phys., 2006, 15: 2246

[16] GuoY., LiaoJ. Q., KuangL. M.. Chin. Phys. Lett., 2007, 24: 3044

[17] van EnkS. J., HirotaO.. Phys. Rev. A, 2001, 64: 022313

[18] NagornyB., ElsässerT., RichterH., HemmerichA.. Phys. Rev., 2003, 67: 031401