Giant atoms with time-dependent couplings
- URL: http://arxiv.org/abs/2201.12575v2
- Date: Tue, 7 Jun 2022 14:48:47 GMT
- Title: Giant atoms with time-dependent couplings
- Authors: Lei Du, Yao-Tong Chen, Yan Zhang, and Yong Li
- Abstract summary: We study the decay dynamics of a two-level giant atom that is coupled to a waveguide with time-dependent coupling strengths.
We show that the dynamics of the atom depends on the atom-waveguide coupling strengths at an earlier time.
- Score: 8.547949480699632
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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.
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