Time-resolved spectroscopy of noise-driven collective states of light
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arXiv
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| Format: | Preprint |
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2025
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| author | Piciocchi, Diego Heckelmann, Ina Dikopoltsev, Alexander Schreiber, Michael Bertrand, Mathieu Beck, Mattias Jirauschek, Christian Zilberberg, Oded Faist, Jérôme |
| author_facet | Piciocchi, Diego Heckelmann, Ina Dikopoltsev, Alexander Schreiber, Michael Bertrand, Mathieu Beck, Mattias Jirauschek, Christian Zilberberg, Oded Faist, Jérôme |
| contents | We study a collective liquid state of light in a fast-gain laser. Controlled temporal noise on the cavity modulation creates a fluctuating linear potential along the synthetic frequency lattice of the cavity modes. We identify three regimes of lattice occupation as noise increases: an extended distribution, a Gaussian envelope, and exponential localization. Time-resolved spectroscopy on single realizations of noise reveals distinct dynamics in the latter two: transport persists in the Gaussian regime, modulated by the fluctuating potential, but is fully suppressed at all times in the localized regime. Averaging over many noise realizations shows that noise reduces the transport speed and confirms ergodicity of the system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_13832 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Time-resolved spectroscopy of noise-driven collective states of light Piciocchi, Diego Heckelmann, Ina Dikopoltsev, Alexander Schreiber, Michael Bertrand, Mathieu Beck, Mattias Jirauschek, Christian Zilberberg, Oded Faist, Jérôme Optics We study a collective liquid state of light in a fast-gain laser. Controlled temporal noise on the cavity modulation creates a fluctuating linear potential along the synthetic frequency lattice of the cavity modes. We identify three regimes of lattice occupation as noise increases: an extended distribution, a Gaussian envelope, and exponential localization. Time-resolved spectroscopy on single realizations of noise reveals distinct dynamics in the latter two: transport persists in the Gaussian regime, modulated by the fluctuating potential, but is fully suppressed at all times in the localized regime. Averaging over many noise realizations shows that noise reduces the transport speed and confirms ergodicity of the system. |
| title | Time-resolved spectroscopy of noise-driven collective states of light |
| topic | Optics |
| url | https://arxiv.org/abs/2508.13832 |