微腔中原子的布局几率

自从1996年Scully等人首次研究了用超冷原子注入微波激射后,一种全新的诱导辐射Mazer便成了量子光学的研究热点.应用双光子Jaynes-Cummings模型,在相干态下,研究了原子的布局几率.当原子运动从经典区域进入量子区域时,原子的布局几率出现明显的变化.同时又计算了在热原子区域,原子布局的塌崩和恢复现象的恢复周期及超冷原子区域出现的共振反峰的共振时间.

Population of Atoms in a Microcavity

With the breakthrough progress in laser cooling, atoms can be cooled to the point that their center-of-mass (CM) motion has to be described as quantum mechanically, which leads to a completely new kind of induced emission called "mazer"(microwave amplication via Z-motion-induced emission of radiation). The population of atoms in the two-photon Jaynes-Cummings model is studied. The atom and the microcavity are initially prepared in the excited state and the coherent state respectively. Many dramatic changes take place in atomic inversion when the atomic CM motion experiences a transition from the classical regime to the quantum regime. The period of the periodic decay and revival effect of the atom in the thermal-atom region is calculated. In the ultra-cold atom region, fine resonances are found in the inversion.