Collective Lamb Shift and Modified Linewidth of An Interacting Atomic Gas
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866911782314967040 |
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| author | Ma, Hanzhen Yelin, Susanne F. |
| author_facet | Ma, Hanzhen Yelin, Susanne F. |
| contents | Finding a comprehensive and general description of the collective Lamb shift and cooperative broadening in a radiatively interacting system is a long-standing open question. Both energy levels and linewidth of individual atoms are modified by the exchange of real and virtual photons making up the dipole-dipole interaction. We introduce a method to theoretically study weakly-driven, low-excited ensembles of two-level atoms, and obtain an analytic description of the collective Lamb shift and linewidth via a self-consistent formalism including infinite order of correlations which stem from only two-body interactions. We predict the dependency of these quantities, as measurables, on system parameters: the number density of the ensemble, the detuning of an external probe field, and the geometry of the sample. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_01865 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Collective Lamb Shift and Modified Linewidth of An Interacting Atomic Gas Ma, Hanzhen Yelin, Susanne F. Quantum Physics Finding a comprehensive and general description of the collective Lamb shift and cooperative broadening in a radiatively interacting system is a long-standing open question. Both energy levels and linewidth of individual atoms are modified by the exchange of real and virtual photons making up the dipole-dipole interaction. We introduce a method to theoretically study weakly-driven, low-excited ensembles of two-level atoms, and obtain an analytic description of the collective Lamb shift and linewidth via a self-consistent formalism including infinite order of correlations which stem from only two-body interactions. We predict the dependency of these quantities, as measurables, on system parameters: the number density of the ensemble, the detuning of an external probe field, and the geometry of the sample. |
| title | Collective Lamb Shift and Modified Linewidth of An Interacting Atomic Gas |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2305.01865 |