Enhancing the Generated Stable Correlation in a Dissipative System of Two Coupled Qubits inside a Coherent Cavity via Their Dipole-Dipole Interplay

Abdel-Baset A Mohamed; Mostafa Hashem; Hichem Eleuch

doi:10.3390/e21070672

Enhancing the Generated Stable Correlation in a Dissipative System of Two Coupled Qubits inside a Coherent Cavity via Their Dipole-Dipole Interplay

Entropy (Basel). 2019 Jul 9;21(7):672. doi: 10.3390/e21070672.

Authors

Abdel-Baset A Mohamed^{1

2}, Mostafa Hashem², Hichem Eleuch^{3

4}

Affiliations

¹ Department of Mathematics, College of Science and Humanities in Al-Aflaj 11942, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia.
² Faculty of Science, Assiut University, Assiut 71515, Egypt.
³ Department of Applied Sciences and Mathematics, College of Arts and Sciences, Abu Dhabi University, Abu Dhabi 59911, UAE.
⁴ Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77843, USA.

Abstract

We explore the dissipative dynamics of two coupled qubits placed inside a coherent cavity-field under dipole-dipole interplay and 2-photon transitions. The generated non-classical correlations (NCCs) beyond entanglement are investigated via two measures based on the Hilbert-Schmidt norm. It is found that the robustness of the generated NCCs can be greatly enhanced by performing the intrinsic dissipation rate, dipole-dipole interplay rate, initial coherence intensity and the degree of the coherent state superpositions. The results show that the intrinsic decoherence stabilize the stationarity of the non-classical correlations while the dipole interplay rate boost them. The non-classical correlations can be frozen at their stationary correlations by increasing the intrinsic dissipation rate. Also NCCs, can be enhanced by increasing the initial coherent intensity.

Keywords: dipole-dipole interplay; intrinsic dissipation; mon-classical correlations.