Sample size effects for Lévy flight of photons in atomic vapors
Lévy flight superdiffusion consists of random walks characterized by very long jumps that dominate the transport. However, the finite size of real samples introduces truncation of long jumps and modifies the transport properties. We measure typical Levy flight parameters for photon diffusion in atom...
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| Veröffentlicht in: | Physical review. E 2021-11, Vol.104 (5-1), p.054143-054143, Article 054143 |
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| container_end_page | 054143 |
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| container_issue | 5-1 |
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| container_title | Physical review. E |
| container_volume | 104 |
| creator | Macedo, A S M Lopez, J P Passerat de Silans, T |
| description | Lévy flight superdiffusion consists of random walks characterized by very long jumps that dominate the transport. However, the finite size of real samples introduces truncation of long jumps and modifies the transport properties. We measure typical Levy flight parameters for photon diffusion in atomic vapor characterized by a Voigt absorption profile. We observe the change of Lévy parameter as a function of truncation length. We associate this variation with size-dependent contributions from different spectral regions of the emission profile with the Doppler core dominating the transport for thin samples and Lorentz wings for thick samples. Monte Carlo simulations are implemented to support the interpretation of results. |
| doi_str_mv | 10.1103/PhysRevE.104.054143 |
| format | Article |
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| title | Sample size effects for Lévy flight of photons in atomic vapors |
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