文献类型：期刊文献

英文题名：Detuning-induced stimulated Raman adiabatic passage in dense two-level systems

作者：Deng, Li[1];Lin, Gongwei[1];Niu, Yueping[1];Gong, Shangqing[1]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai, Peoples R China

年份：2018

卷号：65

期号：9

起止页码：1121

外文期刊名：JOURNAL OF MODERN OPTICS

收录：;EI(收录号：20180504685267);WOS:【SCI-EXPANDED(收录号:WOS:000428269100012)】；

语种：英文

外文关键词：Stimulated Raman adiabatic passage; two-level systems; near dipole-dipole interaction; coherence transition

摘要：We investigate the coherence generation in dense two-level systems under detuning-induced stimulated Raman adiabatic passage (D-STIRAP). In the dense two-level system, the near dipole-dipole (NDD) interaction should be taken into consideration. With the increase in the strength of the NDD interaction, it is found that a switchlike transition of the generated coherence from maximum value to zero appears. Meanwhile, the adiabatic condition of the D-STIRAP is destroyed in the presence of the NDD interaction. In order to avoid the sudden decrease in the generated coherence and maintain the maximum value, we can use stronger detuning pulse or pump pulse, between which increasing the intensity of the detuning pulse is of more efficiency. Except for taking advantage of such maximum coherence in the high density case into areas like enhancing the four-wave mixing process, we also point out that the phenomenon of the coherence transition can be applied as an optical switch.