Fisher and Skew Information Correlations of Two Coupled Trapped Ions: Intrinsic Decoherence and Lamb-Dicke Nonlinearity

Symmetry

卷:13

Hichem Eleuch¹  Ahmed Farouk²  Abdel-Baset A. Mohamed³  Mansour F. Yassen³ 

[1] Department of Applied Physics and Astronomy, University of Sharjah, Sharjah 27272, United Arab Emirates;

[2] Department of Computer Science, Faculty of Computers and Artificial Intelligence, South Valley University, Hurghada 84511, Egypt;

[3] Department of Mathematics, College of Science and Humanities in Al-Aflaj, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia;

关键词: trapped ions;    local quantum Fisher information;    local quantum uncertainty;    logarithmic negativity;   

DOI  :  10.3390/sym13122243

来源: DOAJ

【 摘 要 】

It is well known that many quantum information processing methods in artificial atoms depend largely on their engineering properties and their ability to generate quantum correlations. In this paper, we investigate the non-classical correlation dynamics of two trapped ions by using local quantum Fisher information, local quantum uncertainty, as well as logarithmic negativity. The system engineering is designed such that the two-trapped-ions work as two diploe-coupled qubits in a Lamb-Dicke regime. The center-of-mass vibrational modes are initially in coherent/even coherent states. It is found that the two-trapped-ions correlations can be controlled by the Lamb-Dicke nonlinearity, the nonclassicality effect of the initial center-of-mass vibrational mode, as well as the trapped-ion coupling and the intrinsic decoherence. The sudden changes in the non-classical correlations and their stability are shown against Lamb-Dicke nonlinearity, the nonclassicality, the trapped-ion coupling, and the intrinsic decoherence.

【 授权许可】

Unknown