High Efficiency Four-Wave Mixing with Relaxation Coupling of Longitude-Optical Phonons in Semiconductor Quantum Wells

The time-dependent analysis of four-wave mixing （FWM） has been performed in four-level double semiconductor quantum wells （SQWs） considering the cross-coupling of the longitude-optical phonons （LOP） relaxation. It is shown that both the amplitude and the conversion efficiency of the FWM field enhanc...

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Published inCommunications in theoretical physics Vol. 63; no. 5; pp. 599 - 604
Main Author 余彦超 郑学军 王登龙 丁建文
Format Journal Article
LanguageEnglish
Published 01.05.2015
Subjects
Amplitudes
Conversion
Cross coupling
Four-wave mixing
Joining
Phonons
Quantum wells
Semiconductors
光学声子
光转换效率
半导体
四波混频
弛豫
电磁诱导透明
耦合强度
量子控制
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Summary:The time-dependent analysis of four-wave mixing （FWM） has been performed in four-level double semiconductor quantum wells （SQWs） considering the cross-coupling of the longitude-optical phonons （LOP） relaxation. It is shown that both the amplitude and the conversion efficiency of the FWM field enhance greatly with the increasing strength of cross-coupling of LOP relaxation. Interestingly, a double peak value of the conversion efficiency is obtained under a relatively weak single-photon detuning considering the LOP coupling. When the detuning becomes stronger, the double peaks turn into one peak appearing at the line respect to the about equality two control fields. The results can be interpreted by the effect of electromagnetically induced transparency and the indirect transition. Such controlled high efficiency FWM based on the cross-coupling LOP may have potential applications in quantum control and communications.
Bibliography:four-wave mixing, semiconductor quantum well, phonon coupling
The time-dependent analysis of four-wave mixing （FWM） has been performed in four-level double semiconductor quantum wells （SQWs） considering the cross-coupling of the longitude-optical phonons （LOP） relaxation. It is shown that both the amplitude and the conversion efficiency of the FWM field enhance greatly with the increasing strength of cross-coupling of LOP relaxation. Interestingly, a double peak value of the conversion efficiency is obtained under a relatively weak single-photon detuning considering the LOP coupling. When the detuning becomes stronger, the double peaks turn into one peak appearing at the line respect to the about equality two control fields. The results can be interpreted by the effect of electromagnetically induced transparency and the indirect transition. Such controlled high efficiency FWM based on the cross-coupling LOP may have potential applications in quantum control and communications.
11-2592/O3
SHE Yan-Chao , ZHENG Xue-Jun , WANG Deng-Long , DING Jian-Wen （1School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China 2Key Laboratory of Low Dimensional Materials and Application Technology of the Ministry of Education, Xiangtan University, Xiangtan 411105, China）
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0253-6102
1572-9494
DOI:10.1088/0253-6102/63/5/599