中国物理B ›› 2018, Vol. 27 ›› Issue (10): 100201-100201.doi: 10.1088/1674-1056/27/10/100201

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

Some studies of the interaction between two two-level atoms and SU(1, 1) quantum systems

T M El-Shahat, M Kh Ismail   

  1. Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
  • 收稿日期:2018-06-24 修回日期:2018-07-25 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: M Kh Ismail E-mail:momran484@yahoo.com

Some studies of the interaction between two two-level atoms and SU(1, 1) quantum systems

T M El-Shahat, M Kh Ismail   

  1. Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
  • Received:2018-06-24 Revised:2018-07-25 Online:2018-10-05 Published:2018-10-05
  • Contact: M Kh Ismail E-mail:momran484@yahoo.com

摘要:

Herein, we present an approach to look for the best phenomenon to measure quantum correlation. The system of two isolated qubits each interacting with a single-mode cavity was theoretically created to study the quantum correlation. Some of the phenomena, such as the quantum discord and concurrence, were generated through such a system. The influences of initial state purity, qubit motion, and detuning parameters were discussed for the phenomena. These parameters for a specific value show that the behavior of phenomena are analogous. It is interesting to mention that some values of detuning undergo a sudden death of phenomena, and the quantum discord still captures the qubits quantum correlation. We predict that the quantum discord may be a better measure of quantum correlation than concurrence.

关键词: an isolated atom with a cavity SU(1,1), quantum discord concurrence

Abstract:

Herein, we present an approach to look for the best phenomenon to measure quantum correlation. The system of two isolated qubits each interacting with a single-mode cavity was theoretically created to study the quantum correlation. Some of the phenomena, such as the quantum discord and concurrence, were generated through such a system. The influences of initial state purity, qubit motion, and detuning parameters were discussed for the phenomena. These parameters for a specific value show that the behavior of phenomena are analogous. It is interesting to mention that some values of detuning undergo a sudden death of phenomena, and the quantum discord still captures the qubits quantum correlation. We predict that the quantum discord may be a better measure of quantum correlation than concurrence.

Key words: an isolated atom with a cavity SU(1,1), quantum discord concurrence

中图分类号:  (General structures of groups)

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