Non-Gaussian correlations in the steady-state of driven-dissipative clouds of two-level atoms
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866917398702981120 |
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| author | Ferioli, Giovanni Pancaldi, Sara Glicenstein, Antoine Clement, David Browaeys, Antoine Ferrier-Barbut, Igor |
| author_facet | Ferioli, Giovanni Pancaldi, Sara Glicenstein, Antoine Clement, David Browaeys, Antoine Ferrier-Barbut, Igor |
| contents | We report experimental measurements of the second-order coherence function $g^{(2)}(τ)$ of the light emitted by a laser-driven dense ensemble of $^{87}$Rb atoms. We observe a clear departure from the Siegert relation valid for Gaussian chaotic light. Measuring intensity and first-order coherence, we conclude that the violation is not due to the emergence of a coherent field. This indicates that the light obeys non-Gaussian statistics, stemming from non-Gaussian correlations in the atomic medium. More specifically, the steady-state of this driven-dissipative many-body system sustains high-order correlations in the absence of first-order coherence. These findings call for new theoretical and experimental explorations to uncover their origin and they open new perspectives for the realization of non-Gaussian states of light. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2311_13503 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Non-Gaussian correlations in the steady-state of driven-dissipative clouds of two-level atoms Ferioli, Giovanni Pancaldi, Sara Glicenstein, Antoine Clement, David Browaeys, Antoine Ferrier-Barbut, Igor Quantum Physics Quantum Gases Atomic Physics We report experimental measurements of the second-order coherence function $g^{(2)}(τ)$ of the light emitted by a laser-driven dense ensemble of $^{87}$Rb atoms. We observe a clear departure from the Siegert relation valid for Gaussian chaotic light. Measuring intensity and first-order coherence, we conclude that the violation is not due to the emergence of a coherent field. This indicates that the light obeys non-Gaussian statistics, stemming from non-Gaussian correlations in the atomic medium. More specifically, the steady-state of this driven-dissipative many-body system sustains high-order correlations in the absence of first-order coherence. These findings call for new theoretical and experimental explorations to uncover their origin and they open new perspectives for the realization of non-Gaussian states of light. |
| title | Non-Gaussian correlations in the steady-state of driven-dissipative clouds of two-level atoms |
| topic | Quantum Physics Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2311.13503 |