Synchronization of Quasi-Particle Excitations in a Quantum Gas with Cavity-Mediated Interactions
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913806967373824 |
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| author | Natale, Gabriele Baumgärtner, Alexander Stefaniak, Justyna Baur, David Hertlein, Simon Rivero, Dalila Esslinger, Tilman Donner, Tobias |
| author_facet | Natale, Gabriele Baumgärtner, Alexander Stefaniak, Justyna Baur, David Hertlein, Simon Rivero, Dalila Esslinger, Tilman Donner, Tobias |
| contents | Driven-dissipative quantum systems can undergo transitions from stationary to dynamical phases, reflecting the emergence of collective non-equilibrium behavior. We study such a transition in a Bose-Einstein condensate coupled to an optical cavity and develop a cavity-assisted Bragg spectroscopy technique to resolve its collective modes. We observe dissipation-induced synchronization at the quasiparticle level, where two roton-like modes coalesce at an exceptional point. This reveals how dissipation microscopically drives collective dynamics and signals a precursor to a dynamical phase transition. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17731 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Synchronization of Quasi-Particle Excitations in a Quantum Gas with Cavity-Mediated Interactions Natale, Gabriele Baumgärtner, Alexander Stefaniak, Justyna Baur, David Hertlein, Simon Rivero, Dalila Esslinger, Tilman Donner, Tobias Quantum Gases Atomic Physics Quantum Physics Driven-dissipative quantum systems can undergo transitions from stationary to dynamical phases, reflecting the emergence of collective non-equilibrium behavior. We study such a transition in a Bose-Einstein condensate coupled to an optical cavity and develop a cavity-assisted Bragg spectroscopy technique to resolve its collective modes. We observe dissipation-induced synchronization at the quasiparticle level, where two roton-like modes coalesce at an exceptional point. This reveals how dissipation microscopically drives collective dynamics and signals a precursor to a dynamical phase transition. |
| title | Synchronization of Quasi-Particle Excitations in a Quantum Gas with Cavity-Mediated Interactions |
| topic | Quantum Gases Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2504.17731 |