Observation of a phase transition from a continuous to a discrete time crystal
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866913875549487104 |
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| author | Kongkhambut, Phatthamon Cosme, Jayson G. Skulte, Jim Armijos, Michelle A. Moreno Mathey, Ludwig Hemmerich, Andreas Keßler, Hans |
| author_facet | Kongkhambut, Phatthamon Cosme, Jayson G. Skulte, Jim Armijos, Michelle A. Moreno Mathey, Ludwig Hemmerich, Andreas Keßler, Hans |
| contents | Discrete (DTCs) and continuous time crystals (CTCs) are novel dynamical many-body states, that are characterized by robust self-sustained oscillations, emerging via spontaneous breaking of discrete or continuous time translation symmetry. DTCs are periodically driven systems that oscillate with a subharmonic of the external drive, while CTCs are continuously driven and oscillate with a frequency intrinsic to the system. Here, we explore a phase transition from a continuous time crystal to a discrete time crystal. A CTC with a characteristic oscillation frequency $ω_\mathrm{CTC}$ is prepared in a continuously pumped atom-cavity system. Modulating the pump intensity of the CTC with a frequency $ω_{\mathrm{dr}}$ close to $2\,ω_\mathrm{CTC}$ leads to robust locking of $ω_\mathrm{CTC}$ to $ω_{\mathrm{dr}}/2$, and hence a DTC arises. This phase transition in a quantum many-body system is related to subharmonic injection locking of non-linear mechanical and electronic oscillators or lasers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12378 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Observation of a phase transition from a continuous to a discrete time crystal Kongkhambut, Phatthamon Cosme, Jayson G. Skulte, Jim Armijos, Michelle A. Moreno Mathey, Ludwig Hemmerich, Andreas Keßler, Hans Quantum Physics Quantum Gases Adaptation and Self-Organizing Systems Discrete (DTCs) and continuous time crystals (CTCs) are novel dynamical many-body states, that are characterized by robust self-sustained oscillations, emerging via spontaneous breaking of discrete or continuous time translation symmetry. DTCs are periodically driven systems that oscillate with a subharmonic of the external drive, while CTCs are continuously driven and oscillate with a frequency intrinsic to the system. Here, we explore a phase transition from a continuous time crystal to a discrete time crystal. A CTC with a characteristic oscillation frequency $ω_\mathrm{CTC}$ is prepared in a continuously pumped atom-cavity system. Modulating the pump intensity of the CTC with a frequency $ω_{\mathrm{dr}}$ close to $2\,ω_\mathrm{CTC}$ leads to robust locking of $ω_\mathrm{CTC}$ to $ω_{\mathrm{dr}}/2$, and hence a DTC arises. This phase transition in a quantum many-body system is related to subharmonic injection locking of non-linear mechanical and electronic oscillators or lasers. |
| title | Observation of a phase transition from a continuous to a discrete time crystal |
| topic | Quantum Physics Quantum Gases Adaptation and Self-Organizing Systems |
| url | https://arxiv.org/abs/2402.12378 |