Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.09281 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912933068406784 |
|---|---|
| author | Das, Annyun Solano, Pablo Sinha, Kanu |
| author_facet | Das, Annyun Solano, Pablo Sinha, Kanu |
| contents | We analyze the non-Markovian spontaneous emission dynamics of a two-level test atom placed in a cavity formed by two atomic arrays in a waveguide quantum electrodynamics (QED) setup. We demonstrate a crossover from single-mode to multimode strong coupling cavity QED as the cavity length $ \sim d$ becomes comparable to the coherence length associated with collective spontaneous emission $\sim v/(Nγ)$. The resulting non-Markovian dynamics of the test atom and the emergent spectral density of the field are analyzed as a function of various tunable atomic array parameters: number of atoms, length of the atomic cavity, and resonance frequency of the atoms forming the atomic mirrors. Our results show limitations to cooperatively enhanced light-matter coupling in the presence of time-delayed feedback. We further illustrate that the non-Markovian system dynamics can be efficiently approximated in terms of a few modes of the emergent spectral density of the field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_09281 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Non-Markovian spontaneous emission in a tunable cavity formed by atomic mirrors Das, Annyun Solano, Pablo Sinha, Kanu Quantum Physics We analyze the non-Markovian spontaneous emission dynamics of a two-level test atom placed in a cavity formed by two atomic arrays in a waveguide quantum electrodynamics (QED) setup. We demonstrate a crossover from single-mode to multimode strong coupling cavity QED as the cavity length $ \sim d$ becomes comparable to the coherence length associated with collective spontaneous emission $\sim v/(Nγ)$. The resulting non-Markovian dynamics of the test atom and the emergent spectral density of the field are analyzed as a function of various tunable atomic array parameters: number of atoms, length of the atomic cavity, and resonance frequency of the atoms forming the atomic mirrors. Our results show limitations to cooperatively enhanced light-matter coupling in the presence of time-delayed feedback. We further illustrate that the non-Markovian system dynamics can be efficiently approximated in terms of a few modes of the emergent spectral density of the field. |
| title | Non-Markovian spontaneous emission in a tunable cavity formed by atomic mirrors |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2504.09281 |