Dynamics of impurity: Local and non-local information for two non-identical qubits

OPTICS COMMUNICATIONS

卷:282

Article

Metwally, Nasser^2,3  Abdalla, M. Sebawe¹  Abdel-Aty, Mahmoud^3,4 

[1] King Saud Univ, Dept Math, Coll Sci, Riyadh 11451, Saudi Arabia

[2] S Valley Univ, Dept Math, Fac Sci, Aswan, Egypt

[3] Univ Bahrain, Dept Math, Coll Sci, Isa Town, Bahrain

[4] Sohag Univ, Dept Math, Fac Sci, Sohag 82524, Egypt

关键词: Qubit;    Entanglement;    Impurity;    Local and non-local information;   

DOI  :  10.1016/j.optcom.2009.01.027

来源: Elsevier

【 摘 要 】

From the separability point of view the problem of two ions interact with a single cavity mode is investigated. The density matrix is calculated and used to discuss the entanglement and to examine the dynamics of the local and non-local information. Our examination concentrated on the variation in the mean photon number and the ratio of the coupling parameters. Furthermore, we have also assumed that the atomic system is initially in the ground states as well as in the intermediate states. It has been shown that the local information is transferred to non-local information when the impurity of one qubit or both is maximum. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free