Author(s): WANG De-Hua, ~ HUANG Kai-Yun, and XU Qiang College of Physics, Ludong University, Yantai 264025, China
Pages: 138-144
Year: 2010 Issue:  1
Journal: Communications in Theoretical Physics
Keyword:  spontaneous emission;  polarized atom;  closed orbit theory;
Abstract: <正> Using the photon closed orbit theory, the spontaneous emission rate of a polarized atom in a mediumbetween two parallel mirrors is derived and calculated. It is found that the spontaneous emission rate of a polarized atombetween the mirrors is related to the atomic position and the polarization direction. The results show that in the vicinityof the mirror, the variation of the spontaneous emission rate depends crucially on the atomic polarization direction.With the increase of the polarization angle, the oscillation in the spontaneous emission rate becomes decreased. For thepolarization direction parallel to the mirror plane, the oscillation is the greatest; while for the perpendicular polarizationdirection, the oscillation is nearly vanished. The agreement between our result and the quantum electrodynamics resultsuggests the correctness of our calculation. This study further verifies that the atomic spontaneous emission process canbe effectively controlled by changing the polarization orientation of the atom.