Electric-Field Control of Josephson Oscillations in Dipolar Bose-Einstein Condensates
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915657352740864 |
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| author | Galvez-Poblete, David Troncoso, Roberto E. Romero, Guillermo Nunez, Alvaro S. Allende, Sebastian |
| author_facet | Galvez-Poblete, David Troncoso, Roberto E. Romero, Guillermo Nunez, Alvaro S. Allende, Sebastian |
| contents | We study the dynamic behavior of a Bose-Einstein condensate (BEC) with dipolar interactions when the influence of external electric fields affects the coherent tunneling properties. Here, we propose a tunable platform based on BECs where Josephson oscillations can be engineered and modulated through external electric fields. We develop a theoretical and numerical frame-work that reveals how electric fields affect intercondensate tunneling, phase dynamics, and collective excitations. By employing a coupled set of Gross-Pitaevskii equations with adiabatic elimination of excited states, we demonstrate field-induced tuning of Josephson frequencies and a transition from contact to dipole-dominated regimes. These findings corroborate theoretical predictions about the sensitivity of dipolar BECs to external fields and deepen our understanding of quantum coherence and tunneling in long-range interacting quantum systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_09343 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electric-Field Control of Josephson Oscillations in Dipolar Bose-Einstein Condensates Galvez-Poblete, David Troncoso, Roberto E. Romero, Guillermo Nunez, Alvaro S. Allende, Sebastian Quantum Gases We study the dynamic behavior of a Bose-Einstein condensate (BEC) with dipolar interactions when the influence of external electric fields affects the coherent tunneling properties. Here, we propose a tunable platform based on BECs where Josephson oscillations can be engineered and modulated through external electric fields. We develop a theoretical and numerical frame-work that reveals how electric fields affect intercondensate tunneling, phase dynamics, and collective excitations. By employing a coupled set of Gross-Pitaevskii equations with adiabatic elimination of excited states, we demonstrate field-induced tuning of Josephson frequencies and a transition from contact to dipole-dominated regimes. These findings corroborate theoretical predictions about the sensitivity of dipolar BECs to external fields and deepen our understanding of quantum coherence and tunneling in long-range interacting quantum systems. |
| title | Electric-Field Control of Josephson Oscillations in Dipolar Bose-Einstein Condensates |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2508.09343 |