Spontaneous emission spectra of a four-level atom in photonic crystals driven by two coherent fields

被引：3

作者：

Song, Chong-Xi ^{[1
]}

Huang, Jie-Hui ^{[2
]}

Liu, Nian-Hua ^{[1
,2
]}

机构：

[1] Nanchang Univ, Inst Adv Study, Nanchang 330031, Peoples R China

[2] Nanchang Univ, Dept Phys, Nanchang 330031, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Quantum interference; Photonic crystals; Spontaneous emission spectrum; LAMBDA-TYPE ATOM; 3-LEVEL ATOM; QUANTUM INTERFERENCE; SPONTANEOUS RADIATION; TRANSPARENCY; EDGE;

D O I：

10.1016/j.optcom.2010.11.055

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the spontaneous emission spectra of a four-level tripod-type atom embedded in a photonic crystal and driven by two coherent fields. It is found that due to the quantum interference caused by two driving fields, the spontaneous emission spectra have different features from the case of only one driving field. The spectra are sensitively dependent on the detuning of the driving fields. A dark line occurs for some particular initial states. By appropriately adjusting the external driving fields, the spectral-line can be narrowed, enhanced or suppressed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1598 / 1602

页数：5