Influence of entanglement degree on squeezing and photon antibunching in the tw o-photon Jaynes-Cummings model
Zhang Guofeng, Jia Xin-juan, Qiwei Yan, Liang Jiu-Qing, (1)山西大学理论物理研究所，太原 030006; (2)山西大学理论物理研究所，太原 030006;中国科学院物理研究所与凝聚态物理中心磁学国家重点实验室，北京 100080; (3)中国科学院物理研究所与凝聚态物理中心磁学国家重点实验室，北京 100080 · Acta Physica Sinica · 2003
We mainly consider the case that one of the two entangled atoms with two energy levels interacts with a single-mode and double-photon cavity field. The atom is selectively detected after exiting the cavity, and it is found that the noncla ssical properties of field states depend strongly on the entanglement degree bet ween the two atoms. Meanwhile, it is proved that the squeezing of the field and the photon antibunching can be greatly enhanced via selective atomic measurement s.