Dynamics of non-Markovianity in the presence of a driving field

Pramana

Sarbishaei Mohsen¹  Mandani Somayeh¹  Javidan Kurosh1¹ 

[1] Department of Physics, Ferdowsi University of Mashhad, 91775-1436, Mashhad, Iran$$

关键词: Non-Markovianity;    driving field;    cavity QED;    time convolutionless master equation;    amplitude damping;    phase damping;    two-level atoms.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We investigate a two-level system in a cavity QED by considering the effects ofamplitude damping, phase damping and driving field. We have studied the non-Markovianity in resonance and non-resonance limits in the presence of these effects using Breuer–Laine–Piilo (BLP) non-Markovianity measure ($N_{m BLP}$). The evolution of the system is derived using the time convolutionless (TCL) master equation. In some conditions, it is shown that in the presence of a driving field, the $N_{m BLP} increases in the resonance and non-resonance limits. We have also found the exact solution of the master equation in order to investigate the effect of temperature- and environment excited states. We have shown that the behaviour of non-Markovianity is very different from what one can see from the TCL approach. We have also presented some explanation about the behaviour of non-Markovianity in the exact solution using quantum discord (QD).

【 授权许可】

Unknown