Comment on "Time Crystal in a Single-mode Nonlinear Cavity"
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866909416792522752 |
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| author | Navarrete-Benlloch, Carlos |
| author_facet | Navarrete-Benlloch, Carlos |
| contents | I argue that a single driven quantum Van der Pol oscillator should not be considered a dissipative time crystal, contrary to previous claims. In particular, I show that its phase is prone to randomly drift when considering dephasing or additional nonlinearities, and hence its oscillations are not robust in that sense. The arguments I provide are applicable to many other models studied in the literature for which the limit of persistent oscillations coincides with the classical limit. I hope that this comment will spark a discussion about what should or should not be considered a time crystal (at least in the context of open quantum systems) and clarify it to a point. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_03585 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Comment on "Time Crystal in a Single-mode Nonlinear Cavity" Navarrete-Benlloch, Carlos Quantum Physics Quantum Gases I argue that a single driven quantum Van der Pol oscillator should not be considered a dissipative time crystal, contrary to previous claims. In particular, I show that its phase is prone to randomly drift when considering dephasing or additional nonlinearities, and hence its oscillations are not robust in that sense. The arguments I provide are applicable to many other models studied in the literature for which the limit of persistent oscillations coincides with the classical limit. I hope that this comment will spark a discussion about what should or should not be considered a time crystal (at least in the context of open quantum systems) and clarify it to a point. |
| title | Comment on "Time Crystal in a Single-mode Nonlinear Cavity" |
| topic | Quantum Physics Quantum Gases |
| url | https://arxiv.org/abs/2412.03585 |