Non-Markovian speedup dynamics control of the damped Jaynes–Cummings model with detuning

• 来源期刊: 中国物理B（英文版）
• 关键词: non-Markovianity quantum speed limits open system dynamics
• 年，卷（期）: 2018,（1）
• 页码范围: 247-252
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/1/010302

摘要

For a two-level atom in a lossy cavity, a scheme to manipulate the non-Markovian speedup dynamics has been pro-posed in the controllable environment (the lossy cavity field). We mainly focus on the effects of the qubit–cavity detuning? and the qubit–cavity coupling strengthκon the non-Markovian speedup evolution of an open system. By controlling the environment, i.e., tuning? andκ, two dynamical crossovers from Markovian to non-Markovian and from no-speedup to speedup are achieved. Furthermore, it is clearly found that increasing the coupling strengthκor detuning? in some cases can make the environmental non-Markovianity stronger and hence can lead to faster evolution of the open system.