Cavity-induced quantum droplets
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
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| _version_ | 1866912572323659776 |
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| author | Mixa, Leon Radonjić, Milan Pelster, Axel Thorwart, Michael |
| author_facet | Mixa, Leon Radonjić, Milan Pelster, Axel Thorwart, Michael |
| contents | Quantum droplets are formed in quantum many-body systems when the competition of quantum corrections with the mean-field interaction yields a stable self-bound quantum liquid. We predict the emergence of a quantum droplet when a Bose-Einstein condensate is placed in an optical resonator with transverse pumping. The strong coupling between the atoms and the cavity mode induces long-range interactions in the atoms and a roton mode for negative cavity detuning emerges. Using a Bogoliubov theory, we show that the roton mode competes with the repulsive atomic $s$-wave scattering. Due to the favorable scaling of the quantum fluctuations with respect to the volume, a self-bound stable quantum liquid emerges. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_20072 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cavity-induced quantum droplets Mixa, Leon Radonjić, Milan Pelster, Axel Thorwart, Michael Quantum Gases Quantum droplets are formed in quantum many-body systems when the competition of quantum corrections with the mean-field interaction yields a stable self-bound quantum liquid. We predict the emergence of a quantum droplet when a Bose-Einstein condensate is placed in an optical resonator with transverse pumping. The strong coupling between the atoms and the cavity mode induces long-range interactions in the atoms and a roton mode for negative cavity detuning emerges. Using a Bogoliubov theory, we show that the roton mode competes with the repulsive atomic $s$-wave scattering. Due to the favorable scaling of the quantum fluctuations with respect to the volume, a self-bound stable quantum liquid emerges. |
| title | Cavity-induced quantum droplets |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2409.20072 |