Breaking and trapping Cooper pairs by Rydberg-molecule spectroscopy in atomic Fermi superfluids
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910701830799360 |
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| author | Chien, Chih-Chun Mistakidis, Simeon I. Sadeghpour, Hossein R. |
| author_facet | Chien, Chih-Chun Mistakidis, Simeon I. Sadeghpour, Hossein R. |
| contents | We propose a spectroscopic probe of the breaking and localization of Cooper pairs in an atomic Fermi superfluid interacting with a Rydberg impurity. This is achieved by monitoring the formation of diatomic and triatomic ultralong-range molecular species in the superfluid across the BCS - Bose Einstein condensation (BEC) crossover. The triatomic Rydberg molecule in the BEC regime heralds the trapping of a tightly-bound Cooper pair, reminiscent of pion capture in nuclear matter, while the breaking of a Cooper pair on the BCS side by a diatomic Rydberg molecule is evocative of binary-star tidal disruption by a black hole. Spectroscopy of the Fermi superfluid and Rydberg molecules allows for an estimation of the Cooper-pair size while the Rydberg molecule binding energies discern many-body pairing effects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_01401 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Breaking and trapping Cooper pairs by Rydberg-molecule spectroscopy in atomic Fermi superfluids Chien, Chih-Chun Mistakidis, Simeon I. Sadeghpour, Hossein R. Quantum Gases Quantum Physics We propose a spectroscopic probe of the breaking and localization of Cooper pairs in an atomic Fermi superfluid interacting with a Rydberg impurity. This is achieved by monitoring the formation of diatomic and triatomic ultralong-range molecular species in the superfluid across the BCS - Bose Einstein condensation (BEC) crossover. The triatomic Rydberg molecule in the BEC regime heralds the trapping of a tightly-bound Cooper pair, reminiscent of pion capture in nuclear matter, while the breaking of a Cooper pair on the BCS side by a diatomic Rydberg molecule is evocative of binary-star tidal disruption by a black hole. Spectroscopy of the Fermi superfluid and Rydberg molecules allows for an estimation of the Cooper-pair size while the Rydberg molecule binding energies discern many-body pairing effects. |
| title | Breaking and trapping Cooper pairs by Rydberg-molecule spectroscopy in atomic Fermi superfluids |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2405.01401 |