中国物理B ›› 2023, Vol. 32 ›› Issue (5): 54203-054203.doi: 10.1088/1674-1056/ac8f3d

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Adjusting amplitude of the stored optical solitons by inter-dot tunneling coupling in triple quantum dot molecules

Yin Wang(王胤)1,†, Si-Jie Zhou(周驷杰)2, Yong-He Deng(邓永和)1, and Qiao Chen(陈桥)1   

  1. 1 School of Computational Science and Electronics, Hunan Institute of Engineering, Xiangtan 411104, China;
    2 Department of Physics, Xiangtan University, Xiangtan 411105, China
  • 收稿日期:2022-06-07 修回日期:2022-08-19 接受日期:2022-09-05 出版日期:2023-04-21 发布日期:2023-04-26
  • 通讯作者: Yin Wang E-mail:21112@hnie.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51372214), Hunan Provincial Natural Science Foundation of China (Grant No. 2020JJ4240), and the Doctoral startup foundation of Hunan Institute of Engineering.

Adjusting amplitude of the stored optical solitons by inter-dot tunneling coupling in triple quantum dot molecules

Yin Wang(王胤)1,†, Si-Jie Zhou(周驷杰)2, Yong-He Deng(邓永和)1, and Qiao Chen(陈桥)1   

  1. 1 School of Computational Science and Electronics, Hunan Institute of Engineering, Xiangtan 411104, China;
    2 Department of Physics, Xiangtan University, Xiangtan 411105, China
  • Received:2022-06-07 Revised:2022-08-19 Accepted:2022-09-05 Online:2023-04-21 Published:2023-04-26
  • Contact: Yin Wang E-mail:21112@hnie.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51372214), Hunan Provincial Natural Science Foundation of China (Grant No. 2020JJ4240), and the Doctoral startup foundation of Hunan Institute of Engineering.

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摘要： We study the propagation properties of a probe field in an aligned asymmetric triple quantum dot molecule with both sides inter-dot tunneling coupling effect. It is shown that the probe field can form optical soliton due to the destructive quantum interference induced by the quantum inter-dot tunneling coupling effect. Interestingly, these optical solitons can be stored and retrieved by adjusting single or double inter-dot tunneling coupling effect, different from that light memory in the ultra-cold atom system. Furthermore, we also find that the amplitude of the stored optical soliton can be adjusted by the strength of the single or double inter-dot tunneling coupling. It is possible to improve the stability and the fidelity of the optical information in the process of the storage and retrieval in semiconductor quantum dots devices.

关键词: tunneling induced transparency, triple quantum dot molecules, the storage and retrieval of the optical solitons

Abstract: We study the propagation properties of a probe field in an aligned asymmetric triple quantum dot molecule with both sides inter-dot tunneling coupling effect. It is shown that the probe field can form optical soliton due to the destructive quantum interference induced by the quantum inter-dot tunneling coupling effect. Interestingly, these optical solitons can be stored and retrieved by adjusting single or double inter-dot tunneling coupling effect, different from that light memory in the ultra-cold atom system. Furthermore, we also find that the amplitude of the stored optical soliton can be adjusted by the strength of the single or double inter-dot tunneling coupling. It is possible to improve the stability and the fidelity of the optical information in the process of the storage and retrieval in semiconductor quantum dots devices.

Key words: tunneling induced transparency, triple quantum dot molecules, the storage and retrieval of the optical solitons

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
42.65.Tg (Optical solitons; nonlinear guided waves) 78.67.Hc (Quantum dots)