Delocalization of ultracold atoms in a disordered potential due to light scattering
We numerically study the expansion dynamics of ultracold atoms in a one-dimensional disordered potential in the presence of a weak position measurement of the atoms. We specifically consider this position measurement to be realized by a combination of an external laser and a periodic array of optica...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
9 October 2012
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| In: |
Physical review. A, Atomic, molecular, and optical physics
Year: 2012, Jahrgang: 86, Heft: 4 |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.86.043610 |
| Online-Zugang: | Resolving-System, Volltext: http://dx.doi.org/10.1103/PhysRevA.86.043610 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.86.043610 
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| Verfasserangaben: | Boris Nowak, Jami J. Kinnunen, Murray J. Holland, and Peter Schlagheck |
| Zusammenfassung: | We numerically study the expansion dynamics of ultracold atoms in a one-dimensional disordered potential in the presence of a weak position measurement of the atoms. We specifically consider this position measurement to be realized by a combination of an external laser and a periodic array of optical microcavities along a waveguide. The position information is acquired through the scattering of a near-resonant laser photon into a specific eigenmode of one of the cavities. The time evolution of the atomic density in the presence of this light-scattering mechanism is described within a Lindblad master equation approach, which is numerically implemented using the Monte Carlo wave function technique. We find that an arbitrarily weak rate of photon emission leads to a breakdown of Anderson localization of the atoms. |
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| Beschreibung: | Gesehen am 03.08.2018 |
| Beschreibung: | Online Resource |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.86.043610 |