Predicting correlations in superradiant emission from a cascaded quantum system
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866917829372018688 |
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| author | Tebbenjohanns, Felix Mink, Christopher D. Bach, Constanze Rauschenbeutel, Arno Fleischhauer, Michael |
| author_facet | Tebbenjohanns, Felix Mink, Christopher D. Bach, Constanze Rauschenbeutel, Arno Fleischhauer, Michael |
| contents | In recent experiments, a novel type of cascaded quantum system has been realized using nanofiber-coupled cold atomic ensembles. This setup has enabled the study of superradiant decay of highly excited collective spin states of up to a thousand atoms, featuring unidirectional coupling mediated by the waveguide mode. The complexity arising from the large, multi-excited ensemble and the cascaded interactions between atoms makes conventional simulation methods unsuitable for predicting the correlations of superradiant emission beyond the first order. To address this challenge, we developed a new simulation technique based on the truncated Wigner approximation for spins. Our stochastic simulation tool can predict the second-order quantum coherence function, $g^{(2)}$, along with other correlators of the light field emitted by a strongly excited cascaded system of two-level emitters. This approach thus provides an effective and scalable method for analyzing cascaded quantum systems with large numbers of particles. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_02154 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Predicting correlations in superradiant emission from a cascaded quantum system Tebbenjohanns, Felix Mink, Christopher D. Bach, Constanze Rauschenbeutel, Arno Fleischhauer, Michael Quantum Physics Atomic Physics In recent experiments, a novel type of cascaded quantum system has been realized using nanofiber-coupled cold atomic ensembles. This setup has enabled the study of superradiant decay of highly excited collective spin states of up to a thousand atoms, featuring unidirectional coupling mediated by the waveguide mode. The complexity arising from the large, multi-excited ensemble and the cascaded interactions between atoms makes conventional simulation methods unsuitable for predicting the correlations of superradiant emission beyond the first order. To address this challenge, we developed a new simulation technique based on the truncated Wigner approximation for spins. Our stochastic simulation tool can predict the second-order quantum coherence function, $g^{(2)}$, along with other correlators of the light field emitted by a strongly excited cascaded system of two-level emitters. This approach thus provides an effective and scalable method for analyzing cascaded quantum systems with large numbers of particles. |
| title | Predicting correlations in superradiant emission from a cascaded quantum system |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2407.02154 |