arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.12575quant-ph
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含时耦合巨原子

Giant atoms with time-dependent couplings

Lei Du, Yao-Tong Chen, Yan Zhang, Yong Li

摘要:

研究了耦合强度随时间变化的波导中二能级巨原子的衰变动力学。在延迟效应不可忽略的非马尔可夫区域,我们证明了原子的动力学在较早的时刻依赖于原子-波导耦合强度。这使得人们可以定制的巨原子的衰变动力学,甚至实现一个固定的人口复苏与适当的耦合调制。此外,我们还证明了在周期耦合猝灭的巨原子模型中模拟量子芝诺和量子反芝诺效应的可能性。这些结果在量子信息处理和量子网络工程中具有潜在的应用价值。

英文摘要:

We study the decay dynamics of a two-level giant atom that is coupled to a waveguide with time-dependent coupling strengths. In the non-Markovian regime where the retardation effect cannot be ignored, we show that the dynamics of the atom depends on the atom-waveguide coupling strengths at an earlier time. This allows one to tailor the decay dynamics of the giant atom and even realize a stationary population revival with appropriate coupling modulations. Moreover, we demonstrate the possibility of simulating the quantum Zeno and quantum anti-Zeno effects in the giant-atom model with periodic coupling quenches. These results have potential applications in quantum information processing and quantum network engineering.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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