Driven-dissipative four-mode squeezing of multilevel atoms in an optical cavity
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| Main Authors: | , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866929215272648704 |
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| author | Sundar, Bhuvanesh Barbarena, Diego Rey, Ana Maria Orioli, Asier Piñeiro |
| author_facet | Sundar, Bhuvanesh Barbarena, Diego Rey, Ana Maria Orioli, Asier Piñeiro |
| contents | We utilize multilevel atoms trapped in a driven resonant optical cavity to produce scalable multi-mode squeezed states for quantum sensing and metrology. While superradiance or collective dissipative emission by itself has been typically a detrimental effect for entanglement generation in optical cavities, in the presence of additional drives it can also be used as an entanglement resource. In a recent work [Phys. Rev. Lett. 132, 033601 (2024)], we described a protocol for the dissipative generation of two-mode squeezing in the dark state of a six-level system with only one relevant polarization. There we showed that up to two quadratures can be squeezed. Here, we develop a generalized analytic treatment to calculate the squeezing in any multilevel system where atoms can collectively decay by emitting light into two polarization modes in a cavity. We show that in this more general system up to four spin squeezed quadratures can be obtained. We study how finite-size effects constrain the reachable squeezing, and analytically compute the scaling with $N$. Our findings are readily testable in current optical cavity experiments with alkaline-earth-like atoms. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2309_10717 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Driven-dissipative four-mode squeezing of multilevel atoms in an optical cavity Sundar, Bhuvanesh Barbarena, Diego Rey, Ana Maria Orioli, Asier Piñeiro Quantum Physics We utilize multilevel atoms trapped in a driven resonant optical cavity to produce scalable multi-mode squeezed states for quantum sensing and metrology. While superradiance or collective dissipative emission by itself has been typically a detrimental effect for entanglement generation in optical cavities, in the presence of additional drives it can also be used as an entanglement resource. In a recent work [Phys. Rev. Lett. 132, 033601 (2024)], we described a protocol for the dissipative generation of two-mode squeezing in the dark state of a six-level system with only one relevant polarization. There we showed that up to two quadratures can be squeezed. Here, we develop a generalized analytic treatment to calculate the squeezing in any multilevel system where atoms can collectively decay by emitting light into two polarization modes in a cavity. We show that in this more general system up to four spin squeezed quadratures can be obtained. We study how finite-size effects constrain the reachable squeezing, and analytically compute the scaling with $N$. Our findings are readily testable in current optical cavity experiments with alkaline-earth-like atoms. |
| title | Driven-dissipative four-mode squeezing of multilevel atoms in an optical cavity |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2309.10717 |