中国物理B ›› 2020, Vol. 29 ›› Issue (5): 50306-050306.doi: 10.1088/1674-1056/ab7e9a

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Fast achievement of quantum state transfer and distributed quantum entanglement by dressed states

Liang Tian(田亮), Li-Li Sun(孙立莉), Xiao-Yu Zhu(朱小瑜), Xue-Ke Song(宋学科), Lei-Lei Yan(闫磊磊), Er-Jun Liang(梁二军), Shi-Lei Su(苏石磊), Mang Feng(冯芒)   

  1. 1 School of Physics, Zhengzhou University, Zhengzhou 450001, China;
    2 College of Physics, Tonghua Normal University, Tonghua 134000, China;
    3 College of Science, Henan University of Engineering, Zhengzhou 451191, China;
    4 School of Physics and Material Science, Anhui University, Hefei 230601, China;
    5 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • 收稿日期:2020-01-20 修回日期:2020-03-01 出版日期:2020-05-05 发布日期:2020-05-05
  • 通讯作者: Shi-Lei Su E-mail:slsu@zzu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11804308).

Fast achievement of quantum state transfer and distributed quantum entanglement by dressed states

Liang Tian(田亮)1, Li-Li Sun(孙立莉)2, Xiao-Yu Zhu(朱小瑜)1,3, Xue-Ke Song(宋学科)4, Lei-Lei Yan(闫磊磊)1, Er-Jun Liang(梁二军)1, Shi-Lei Su(苏石磊)1, Mang Feng(冯芒)1,5   

  1. 1 School of Physics, Zhengzhou University, Zhengzhou 450001, China;
    2 College of Physics, Tonghua Normal University, Tonghua 134000, China;
    3 College of Science, Henan University of Engineering, Zhengzhou 451191, China;
    4 School of Physics and Material Science, Anhui University, Hefei 230601, China;
    5 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2020-01-20 Revised:2020-03-01 Online:2020-05-05 Published:2020-05-05
  • Contact: Shi-Lei Su E-mail:slsu@zzu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11804308).

摘要: We propose schemes to realize quantum state transfer and prepare quantum entanglement in coupled cavity and cavity-fiber-cavity systems, respectively, by using the dressed state method. We first give the expression of pulses shape by using dressed states and then find a group of Gaussian pulses that are easy to realize in experiment to replace the ideal pulses by curve fitting. We also study the influence of some parameters fluctuation, atomic spontaneous emission, and photon leakage on fidelity. The results show that our schemes have good robustness. Because the atoms are trapped in different cavities, it is easy to perform different operations on different atoms. The proposed schemes have the potential applications in dressed states for distributed quantum information processing tasks.

关键词: quantum state transfer, dressed state method, distributed quantum information processing

Abstract: We propose schemes to realize quantum state transfer and prepare quantum entanglement in coupled cavity and cavity-fiber-cavity systems, respectively, by using the dressed state method. We first give the expression of pulses shape by using dressed states and then find a group of Gaussian pulses that are easy to realize in experiment to replace the ideal pulses by curve fitting. We also study the influence of some parameters fluctuation, atomic spontaneous emission, and photon leakage on fidelity. The results show that our schemes have good robustness. Because the atoms are trapped in different cavities, it is easy to perform different operations on different atoms. The proposed schemes have the potential applications in dressed states for distributed quantum information processing tasks.

Key words: quantum state transfer, dressed state method, distributed quantum information processing

中图分类号:  (Quantum mechanics)

  • 03.65.-w
03.67.-a (Quantum information)