Abstract This paper investigates the squeezing properties of an atom laser without rotating-wave approximation in the system of a binomial states field interacting with a two-level atomic Bose--Einstein condensate. It discusses the influences of atomic eigenfrequency, the interaction intensity between the optical field and atoms，parameter of the binomial states field and virtual photon field on the squeezing properties. The results show that two quadrature components of an atom laser can be squeezed periodically. The duration and the degree of squeezing an atom laser have something to do with the atomic eigenfrequency and the parameter of the binomial states field, respectively. The collapse and revival frequency of atom laser fluctuation depends on the interaction intensity between the optical field and atoms. The effect of the virtual photon field deepens the depth of squeezing an atom laser.
Received: 22 December 2008
Revised: 28 December 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10847143) and the
Natural Science Foundation of Shandong Province (Grant Nos Q2007A01
and Y2008A23).
Cite this article:
Zhao Jian-Gang(赵建刚), Sun Chang-Yong(孙长勇), Wen Ling-Hua(文灵华), and Liang Bao-Long(梁宝龙) Influence of the virtual photon field on the squeezing properties of atom laser 2009 Chin. Phys. B 18 2294
Controllable transmission of vector beams in dichroic medium Yun-Ke Li(李云珂), Jin-Wen Wang(王金文), Xin Yang(杨欣), Yun Chen(陈云), Xi-Yuan Chen(陈熙远), Ming-Tao Cao(曹明涛), Dong Wei(卫栋), Hong Gao(高宏), Fu-Li Li(李福利). Chin. Phys. B, 2019, 28(1): 014205.
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