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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.12267 |
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| _version_ | 1866911578680459264 |
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| author | Reilly, Jarrod T. Jäger, Simon B. Cooper, John Holland, Murray J. |
| author_facet | Reilly, Jarrod T. Jäger, Simon B. Cooper, John Holland, Murray J. |
| contents | To date, realization of a continuous-wave active atomic clock has been elusive primarily due to parasitic heating from spontaneous emission while repumping the atoms. Here, we propose a solution to this problem by replacing the random emission with coupling to an auxiliary cavity, making repumping a fully collective process. While it is known that collective two-level models do not possess a generic lasing threshold, we show this restriction is overcome with multi-level atoms since collective pumping and decay can be performed on distinct transitions. Using relevant atomic parameters, we find this system is capable of producing an $\mathcal{O}$(100 $μ$Hz)-linewidth continuous-wave superradiant laser. Our principal result is the potential for an operating regime with cavity length vibration sensitivity below $\mathcal{O}(10^{-14} / g)$, including a locus of parameter values where it completely vanishes even at steady-state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_12267 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fully Collective Superradiant Lasing with Vanishing Sensitivity to Cavity Length Vibrations Reilly, Jarrod T. Jäger, Simon B. Cooper, John Holland, Murray J. Quantum Physics To date, realization of a continuous-wave active atomic clock has been elusive primarily due to parasitic heating from spontaneous emission while repumping the atoms. Here, we propose a solution to this problem by replacing the random emission with coupling to an auxiliary cavity, making repumping a fully collective process. While it is known that collective two-level models do not possess a generic lasing threshold, we show this restriction is overcome with multi-level atoms since collective pumping and decay can be performed on distinct transitions. Using relevant atomic parameters, we find this system is capable of producing an $\mathcal{O}$(100 $μ$Hz)-linewidth continuous-wave superradiant laser. Our principal result is the potential for an operating regime with cavity length vibration sensitivity below $\mathcal{O}(10^{-14} / g)$, including a locus of parameter values where it completely vanishes even at steady-state. |
| title | Fully Collective Superradiant Lasing with Vanishing Sensitivity to Cavity Length Vibrations |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2506.12267 |