中国物理B ›› 2020, Vol. 29 ›› Issue (5): 57305-057305.doi: 10.1088/1674-1056/a67e9c

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Dynamics of entropic uncertainty for three types of three-level atomic systems under the random telegraph noise

Xiong Xu(许雄), Mao-Fa Fang(方卯发)   

  1. Synergetic Innovation Center for Quantum Effects and Applications, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2020-02-05 修回日期:2020-03-03 出版日期:2020-05-05 发布日期:2020-05-05
  • 通讯作者: Mao-Fa Fang E-mail:mffang@hunnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11374096).

Dynamics of entropic uncertainty for three types of three-level atomic systems under the random telegraph noise

Xiong Xu(许雄), Mao-Fa Fang(方卯发)   

  1. Synergetic Innovation Center for Quantum Effects and Applications, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
  • Received:2020-02-05 Revised:2020-03-03 Online:2020-05-05 Published:2020-05-05
  • Contact: Mao-Fa Fang E-mail:mffang@hunnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11374096).

摘要: We study the dynamics of the entropic uncertainty for three types of three-level atomic systems coupled to an environment modeled by random matrices. The results show that the entropic uncertainty in the Ξ-type atomic system is lower than that in the V-type atomic system which is exactly the same as that in the Λ-type atomic system. In addition, the effect of relative coupling strength on entropic uncertainty is opposite in Markov region and non-Markov region, and the influence of a common environment and independent environments in Markov region and non-Markov region is also opposite. One can reduce the entropic uncertainty by decreasing relative coupling strength or placing the system in two separate environments in the Markov case. In the non-Markov case, the entropic uncertainty can be reduced by increasing the relative coupling strength or by placing the system in a common environment.

关键词: entropic uncertainty, three-level atom, random telegraph noise

Abstract: We study the dynamics of the entropic uncertainty for three types of three-level atomic systems coupled to an environment modeled by random matrices. The results show that the entropic uncertainty in the Ξ-type atomic system is lower than that in the V-type atomic system which is exactly the same as that in the Λ-type atomic system. In addition, the effect of relative coupling strength on entropic uncertainty is opposite in Markov region and non-Markov region, and the influence of a common environment and independent environments in Markov region and non-Markov region is also opposite. One can reduce the entropic uncertainty by decreasing relative coupling strength or placing the system in two separate environments in the Markov case. In the non-Markov case, the entropic uncertainty can be reduced by increasing the relative coupling strength or by placing the system in a common environment.

Key words: entropic uncertainty, three-level atom, random telegraph noise

中图分类号:  (Quantum wires)

  • 73.63.Nm
03.67.Hk (Quantum communication) 03.65.Ud (Entanglement and quantum nonlocality) 85.35.Be (Quantum well devices (quantum dots, quantum wires, etc.))