Quantum interference effect on spontaneous emission spectrum in a doubly driven M-type atom |
| |
Authors: | Bibhas Kumar Dutta Prasanta Kumar Mahapatra |
| |
Affiliation: | a Department of Physics, J. K. College, Purulia 723 101, India b Department of Physics and Technophysics, Vidyasagar University, Midnapore 721 102, India |
| |
Abstract: | An M-type atomic system with two closely spaced upper levels interacting with the same modes of the vacuum radiation field exhibits the interference effect between the spontaneous decay channels. The phenomenon of this decay-interference along with the dynamically induced quantum interference created in the system by two coherent fields can change significantly the spontaneous emission spectrum. Our results highlight large enhancement of ultranarrow spectral components within the spontaneous emission line shape in various conditions. We have shown the occurrence of two contradistinctive phenomena: compression of two spectral lines towards their mid-position and the spreading of two lines away from each other under different dynamic conditions. The phenomenon of suppression of spectral line and the quenching of spontaneous emission have also been focused. |
| |
Keywords: | 42.50.Ct 32.80.Qk 32.50.+d |
本文献已被 ScienceDirect 等数据库收录! |