Generating persistent-current superpositions in Bose-Einstein condensates using dynamic optical potentials
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866915760544153600 |
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| author | Testa, Renzo Cassettari, Donatella |
| author_facet | Testa, Renzo Cassettari, Donatella |
| contents | Precise and flexible manipulation of the motional state of ultracold atoms is a fundamental enabling technology for diverse applications such as quantum sensing and quantum computation. In this paper we propose a general, simple and highly efficient method to engineer the motional state of a Bose-Einstein condensate with time-dependent optical fields, which can be realized experimentally with existing light sculpting techniques. We demonstrate numerically how to engineer superpositions of persistent currents in a toroidal trap, achieving very high fidelity. We also study in detail the stability of the state over time, and we present an analytical two-state model that approximates well the evolution of the state in presence of self-interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_21144 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Generating persistent-current superpositions in Bose-Einstein condensates using dynamic optical potentials Testa, Renzo Cassettari, Donatella Quantum Gases Quantum Physics Precise and flexible manipulation of the motional state of ultracold atoms is a fundamental enabling technology for diverse applications such as quantum sensing and quantum computation. In this paper we propose a general, simple and highly efficient method to engineer the motional state of a Bose-Einstein condensate with time-dependent optical fields, which can be realized experimentally with existing light sculpting techniques. We demonstrate numerically how to engineer superpositions of persistent currents in a toroidal trap, achieving very high fidelity. We also study in detail the stability of the state over time, and we present an analytical two-state model that approximates well the evolution of the state in presence of self-interactions. |
| title | Generating persistent-current superpositions in Bose-Einstein condensates using dynamic optical potentials |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2601.21144 |