Superposition of two arbitrary coherent states and its quantum statistical properties
MA Zhi-min, Ma Ai-Qun, Ran Zeng, Qu Wang, Shutian Liu, (1)哈尔滨工业大学应用物理系，哈尔滨 150001; (2)哈尔滨工业大学应用物理系，哈尔滨 150001;珠海市城市职业技术学院，珠海 519015;黑龙江大学物理科学与技术学院，哈尔滨 150080; (3)哈尔滨师范大学呼兰学院物理系，哈尔滨 150500 · Acta Physica Sinica · 2005
In this paper, the quantum statistical properties of the superposition state,a｜ β〉+beiφ｜mβeiδ〉,which involves two arbitrary coh erent states, are investigated. The results show that this kind of super-positio n states generally exhibits squeezing effect or anti-bunching effect. The quantu m effects of the superposed state depend on β2 and the amplitude coe fficient m, as well as the changes of the phase difference between two coherent states δ, and the phase difference between two superposition coefficients φ al so plays an important role in squeezing or anti-bunching effects.