Volume 16 Issue 5
Sep.  2023
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XIE Jia-ling, YAN Kai, TAN Jia, CAO Zhao-liang, HAO Xiang. Decoherence of temporal quantum correlation in electrically controllable quantum-dots molecules[J]. Chinese Optics, 2023, 16(5): 1206-1214. doi: 10.37188/CO.EN-2022-0025
Citation: XIE Jia-ling, YAN Kai, TAN Jia, CAO Zhao-liang, HAO Xiang. Decoherence of temporal quantum correlation in electrically controllable quantum-dots molecules[J]. Chinese Optics, 2023, 16(5): 1206-1214. doi: 10.37188/CO.EN-2022-0025

Decoherence of temporal quantum correlation in electrically controllable quantum-dots molecules

doi: 10.37188/CO.EN-2022-0025
Funds:  Supported by National Natural Science Foundation of China (No. 61875145);Jiangsu Key Disciplines of the Fourteenth Five-Year Plan (No.2021135); Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX23_3312);
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  • Author Bio:

    Xie Jia-ling (1999—), female, born in Nantong, Jiangsu Province, masters student. She received her bachelor's degree from the Yancheng Institute of Technology in 2021. She is mainly engaged in research on quantum optics and quantum information. E-mail: 2392111827@qq.com

    Hao Xiang (1981—), male, born in Huaian, Jiangsu Province, Ph.D., professor and masters supervisor. He received his Ph.D. from the Institute of Modern Optics, Soochow University in 2008. He is mainly engaged in research of quantum optics and quantum information. E-mail: xhao@mail.usts.edu.cn

  • Corresponding author: xhao@mail.usts.edu.cn
  • Received Date: 18 Nov 2022
  • Rev Recd Date: 08 Dec 2022
  • Available Online: 04 Feb 2023
  • The decoherence of temporal quantum correlation is explored in a voltage-controlled quantum dots molecule coupled to a cavity. The temporal correlation in the optoelectronic hybrid system is studied based on Leggett-Garg inequalities. The inequality violations can be interpreted as the existence of temporal quantum correlation during dynamical evolution. The temporal quantum correlation is enhanced by its electron tunnel’s strength and cavity frequency detuning. It is found that there is no temporal quantum correlation in the regions where the values of spatial quantum correlation are zero and the maximal violations occur in conditions with high values of quantum correlation. In contrast, the spatial quantum coherence can still exsit when the value of temporal quantum correlation is zero. The method of open quantum system dynamic is used to study the effect of reservoir memory on temporal quantum correlation. The temporal quantum correlation can be suppressed due to the spontaneous decay of the quantum dots and cavity leakage. These results are helpful for quantum information processing technology in hybrid quantum systems.

     

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