Controllable double electromagnetically induced transparency in a closed four-level-loop cavity–atom system

doi:10.1088/1674-1056/26/7/074207

中国物理B ›› 2017, Vol. 26 ›› Issue (7): 74207-074207.doi: 10.1088/1674-1056/26/7/074207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Controllable double electromagnetically induced transparency in a closed four-level-loop cavity–atom system

Miao-Di Guo(郭苗迪), Xue-Mei Su(苏雪梅)

Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy(Ministry of Education);and College of Physics, Jilin University, Changchun 130012, China

收稿日期:2017-02-14 修回日期:2017-03-23 出版日期:2017-07-05 发布日期:2017-07-05
通讯作者: Xue-Mei Su E-mail:suxm@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No.11174109).

Controllable double electromagnetically induced transparency in a closed four-level-loop cavity–atom system

Miao-Di Guo(郭苗迪), Xue-Mei Su(苏雪梅)

Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy(Ministry of Education);and College of Physics, Jilin University, Changchun 130012, China

Received:2017-02-14 Revised:2017-03-23 Online:2017-07-05 Published:2017-07-05
Contact: Xue-Mei Su E-mail:suxm@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No.11174109).

摘要/Abstract

摘要： We present a theoretical study of an optical cavity coupled with single four-level atoms in closed loop formed via applied control lasers.The transmitted probe field from the cavity is analyzed.We show that the electromagnetically induced transparency (EIT) in the cavity and the normal mode splitting will be very different with changing the closed interaction phase and the intensity of the free-space control laser.This coupled cavity–atom system presents a variational double-EIT that comes from modulating the splitting of the dark state,which means that we could realize the gradual transfer between one EIT peak and two EIT peaks by adjusting the applied control lasers,and the normal mode splitting sidebands will shift slightly by changing the free-space control laser.This means that we could control the output cavity probe field more freely and it is easer to realize optical switch controlled by more parameters.We also depict the angular dispersion of the intracavity probe field in different free-space control laser.The large phase shift (–π→π) of the reflected intracavity probe field will be very useful for optical temporal differentiation and quantum phase gate.

关键词: cavity quantum electrodynamics, double electromagnetically induced transparency, all optical switch, cross phase modulation

Abstract: We present a theoretical study of an optical cavity coupled with single four-level atoms in closed loop formed via applied control lasers.The transmitted probe field from the cavity is analyzed.We show that the electromagnetically induced transparency (EIT) in the cavity and the normal mode splitting will be very different with changing the closed interaction phase and the intensity of the free-space control laser.This coupled cavity–atom system presents a variational double-EIT that comes from modulating the splitting of the dark state,which means that we could realize the gradual transfer between one EIT peak and two EIT peaks by adjusting the applied control lasers,and the normal mode splitting sidebands will shift slightly by changing the free-space control laser.This means that we could control the output cavity probe field more freely and it is easer to realize optical switch controlled by more parameters.We also depict the angular dispersion of the intracavity probe field in different free-space control laser.The large phase shift (–π→π) of the reflected intracavity probe field will be very useful for optical temporal differentiation and quantum phase gate.

Key words: cavity quantum electrodynamics, double electromagnetically induced transparency, all optical switch, cross phase modulation

中图分类号: (Cavity quantum electrodynamics; micromasers)

42.50.Pq

42.50.-p (Quantum optics) 42.65.Pc (Optical bistability, multistability, and switching, including local field effects) 42.65.-k (Nonlinear optics)

郭苗迪, 苏雪梅. Controllable double electromagnetically induced transparency in a closed four-level-loop cavity–atom system[J]. 中国物理B, 2017, 26(7): 74207-074207.

Miao-Di Guo(郭苗迪), Xue-Mei Su(苏雪梅). Controllable double electromagnetically induced transparency in a closed four-level-loop cavity–atom system[J]. Chin. Phys. B, 2017, 26(7): 74207-074207.

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Controllable double electromagnetically induced transparency in a closed four-level-loop cavity–atom system

Controllable double electromagnetically induced transparency in a closed four-level-loop cavity–atom system

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