تقرير
Elastic Scattering Time of Matter-Waves in Disordered Potentials
| العنوان: | Elastic Scattering Time of Matter-Waves in Disordered Potentials |
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| المؤلفون: | Richard, Jérémie, Lim, Lih-King, Denechaud, Vincent, Volchkov, Valentin V., Lecoutre, Baptiste, Mukhtar, Musawwadah, Jendrzejewski, Fred, Aspect, Alain, Signoles, Adrien, Sanchez-Palencia, Laurent, Josse, Vincent |
| المصدر: | Phys. Rev. Lett. 122, 100403 (2019) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases, Condensed Matter - Disordered Systems and Neural Networks |
| الوصف: | We report on an extensive study of the elastic scattering time $\tauS$ of matter-waves in optical disordered potentials. Using direct experimental measurements, numerical simulations and comparison with first-order Born approximation based on the knowledge of the disorder properties, we explore the behavior of $\tauS$ over more than three orders of magnitude, spanning from the weak to the strong scattering regime. We study in detail the location of the crossover and, as a main result, we reveal the strong influence of the disorder statistics, especially on the relevance of the widely used Ioffe-Regel-like criterion $k\lS\sim 1$. While it is found to be relevant for Gaussian-distributed disordered potentials, we observe significant deviations for laser speckle disorders that are commonly used with ultracold atoms. Our results are crucial for connecting experimental investigation of complex transport phenomena, such as Anderson localization, to microscopic theories. Comment: 6+4 pages, 3+4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.122.100403 |
| الوصول الحر: | http://arxiv.org/abs/1810.07574Test |
| رقم الانضمام: | edsarx.1810.07574 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.122.100403 |
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