非旋波近似下双光子JC模型中原子的压缩效应

SDUDY OF SQUEEZING EFFECT OF ATOM IN VACUUM STATE TWO-PHONE JAYNES-CUMMINGS MODEL WITHIN NON ROTATING WAVE APPOXIMATION

利用数值对角化方法，数值地探讨了非旋波近似下真空态双光子Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型中原子的压缩效应，获得了旋波近似下不可能有的较有意义的结果；揭示了初始原子相干性对原子压缩效应的影响；同时，数值地显示了该系统在不同条件下所呈现的有规或无规动力学行为．

With the vacuum state two-photon Jaynes-Cummings model,the squeezing effect of atom was investigated numerically by the method of numerical diagonal within non rotating wave approximation, some significant results that could not be got within rotating wave approximation were obtained;and the influence of initial atomic coherence on squeezing effect of atom were showed. The irregular dynamical behaviors were displayed numerically under different conditions in system.