Engineering quantum droplet formation by cavity-induced long-range interactions
We investigate a dilute Bose gas with both a short-range contact and an effective long-range interaction between the atoms. The latter is induced by the strong coupling to a cavity light mode and is spatially characterized by a periodic signature and a tunable envelope rooted in the pumping of the c...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-05-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.023204 |
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| _version_ | 1850185509432721408 |
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| author | Leon Mixa Milan Radonjić Axel Pelster Michael Thorwart |
| author_facet | Leon Mixa Milan Radonjić Axel Pelster Michael Thorwart |
| author_sort | Leon Mixa |
| collection | DOAJ |
| description | We investigate a dilute Bose gas with both a short-range contact and an effective long-range interaction between the atoms. The latter is induced by the strong coupling to a cavity light mode and is spatially characterized by a periodic signature and a tunable envelope rooted in the pumping of the cavity. We formulate a Bogoliubov theory based on a homogeneous mean-field description and quantum fluctuations around it. The competition between the repulsive contact interaction and the long-range interaction allows the formation of self-bound quantum droplets. This generic approach is applied to two cavity setups, one without and one with a momentum-conserving effective long-range interaction between the atoms in the form of a driven dispersive cavity mode and a multimode cavity, respectively. For both cases we show analytically how the size and the central density of the cavity-induced quantum droplets depend on the contact interaction strength and on the shape of the spatial envelope of the long-range interaction. |
| format | Article |
| id | doaj-art-2ad2e04f49474c6498dfd259ad5669b6 |
| institution | OA Journals |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-2ad2e04f49474c6498dfd259ad5669b62025-08-20T02:16:44ZengAmerican Physical SocietyPhysical Review Research2643-15642025-05-017202320410.1103/PhysRevResearch.7.023204Engineering quantum droplet formation by cavity-induced long-range interactionsLeon MixaMilan RadonjićAxel PelsterMichael ThorwartWe investigate a dilute Bose gas with both a short-range contact and an effective long-range interaction between the atoms. The latter is induced by the strong coupling to a cavity light mode and is spatially characterized by a periodic signature and a tunable envelope rooted in the pumping of the cavity. We formulate a Bogoliubov theory based on a homogeneous mean-field description and quantum fluctuations around it. The competition between the repulsive contact interaction and the long-range interaction allows the formation of self-bound quantum droplets. This generic approach is applied to two cavity setups, one without and one with a momentum-conserving effective long-range interaction between the atoms in the form of a driven dispersive cavity mode and a multimode cavity, respectively. For both cases we show analytically how the size and the central density of the cavity-induced quantum droplets depend on the contact interaction strength and on the shape of the spatial envelope of the long-range interaction.http://doi.org/10.1103/PhysRevResearch.7.023204 |
| spellingShingle | Leon Mixa Milan Radonjić Axel Pelster Michael Thorwart Engineering quantum droplet formation by cavity-induced long-range interactions Physical Review Research |
| title | Engineering quantum droplet formation by cavity-induced long-range interactions |
| title_full | Engineering quantum droplet formation by cavity-induced long-range interactions |
| title_fullStr | Engineering quantum droplet formation by cavity-induced long-range interactions |
| title_full_unstemmed | Engineering quantum droplet formation by cavity-induced long-range interactions |
| title_short | Engineering quantum droplet formation by cavity-induced long-range interactions |
| title_sort | engineering quantum droplet formation by cavity induced long range interactions |
| url | http://doi.org/10.1103/PhysRevResearch.7.023204 |
| work_keys_str_mv | AT leonmixa engineeringquantumdropletformationbycavityinducedlongrangeinteractions AT milanradonjic engineeringquantumdropletformationbycavityinducedlongrangeinteractions AT axelpelster engineeringquantumdropletformationbycavityinducedlongrangeinteractions AT michaelthorwart engineeringquantumdropletformationbycavityinducedlongrangeinteractions |