Tunable Anomalous Diffusion in Subrecoil-Laser-Cooled Atoms
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866917961375154176 |
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| author | Shiraki, Soma Barkai, Eli Akimoto, Takuma |
| author_facet | Shiraki, Soma Barkai, Eli Akimoto, Takuma |
| contents | The control of atomic motion through laser cooling has revolutionized quantum technologies, enabling applications ranging from quantum computing to precision metrology. However, the spatial spreading of subrecoil-laser-cooled atoms -- crucial for understanding cooling mechanisms and atomic confinement -- remains largely unexplored. Here, we analyze anomalous diffusion in subrecoil-laser-cooled atoms, where a velocity-dependent fluorescence rate $R(v) \propto |v|^α$ governs transport properties. By tuning $α$, we uncover transitions between normal, subdiffusive, and superdiffusive regimes. Notably, at $α= 3/2$, diffusion is minimized, leading to optimal atomic confinement. These findings advance the understanding of anomalous transport in laser-cooled systems and offer new avenues for precise control of atomic motion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_15027 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tunable Anomalous Diffusion in Subrecoil-Laser-Cooled Atoms Shiraki, Soma Barkai, Eli Akimoto, Takuma Statistical Mechanics The control of atomic motion through laser cooling has revolutionized quantum technologies, enabling applications ranging from quantum computing to precision metrology. However, the spatial spreading of subrecoil-laser-cooled atoms -- crucial for understanding cooling mechanisms and atomic confinement -- remains largely unexplored. Here, we analyze anomalous diffusion in subrecoil-laser-cooled atoms, where a velocity-dependent fluorescence rate $R(v) \propto |v|^α$ governs transport properties. By tuning $α$, we uncover transitions between normal, subdiffusive, and superdiffusive regimes. Notably, at $α= 3/2$, diffusion is minimized, leading to optimal atomic confinement. These findings advance the understanding of anomalous transport in laser-cooled systems and offer new avenues for precise control of atomic motion. |
| title | Tunable Anomalous Diffusion in Subrecoil-Laser-Cooled Atoms |
| topic | Statistical Mechanics |
| url | https://arxiv.org/abs/2503.15027 |