Details
| Originalsprache | Englisch |
|---|---|
| Fachzeitschrift | Physical Review Letters |
| Jahrgang | 91 |
| Ausgabenummer | 8 |
| Publikationsstatus | Veröffentlicht - 19 Aug. 2003 |
Abstract
An ultracold atomic Bose gas in an optical lattice is shown to provide an ideal system for the controlled analysis of disordered Bose lattice gases. This goal may be easily achieved under the current experimental conditions by introducing a pseudorandom potential created by a second additional lattice or, alternatively, by placing a speckle pattern on the main lattice. We show that, for a noncommensurable filling factor, in the strong-interaction limit, a controlled growing of the disorder drives a dynamical transition from superfluid to Bose-glass phase. Similarly, in the weak interaction limit, a dynamical transition from superfluid to Anderson-glass phase may be observed. In both regimes, we show that even very low-intensity disorder-inducing lasers cause large modifications of the superfluid fraction of the system.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical Review Letters, Jahrgang 91, Nr. 8, 19.08.2003.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Atomic Bose and Anderson Glasses in Optical Lattices
AU - Damski, Bogdan
AU - Zakrzewski, J.
AU - Santos, Luis
AU - Zoller, P.
AU - Lewenstein, Maciej
PY - 2003/8/19
Y1 - 2003/8/19
N2 - An ultracold atomic Bose gas in an optical lattice is shown to provide an ideal system for the controlled analysis of disordered Bose lattice gases. This goal may be easily achieved under the current experimental conditions by introducing a pseudorandom potential created by a second additional lattice or, alternatively, by placing a speckle pattern on the main lattice. We show that, for a noncommensurable filling factor, in the strong-interaction limit, a controlled growing of the disorder drives a dynamical transition from superfluid to Bose-glass phase. Similarly, in the weak interaction limit, a dynamical transition from superfluid to Anderson-glass phase may be observed. In both regimes, we show that even very low-intensity disorder-inducing lasers cause large modifications of the superfluid fraction of the system.
AB - An ultracold atomic Bose gas in an optical lattice is shown to provide an ideal system for the controlled analysis of disordered Bose lattice gases. This goal may be easily achieved under the current experimental conditions by introducing a pseudorandom potential created by a second additional lattice or, alternatively, by placing a speckle pattern on the main lattice. We show that, for a noncommensurable filling factor, in the strong-interaction limit, a controlled growing of the disorder drives a dynamical transition from superfluid to Bose-glass phase. Similarly, in the weak interaction limit, a dynamical transition from superfluid to Anderson-glass phase may be observed. In both regimes, we show that even very low-intensity disorder-inducing lasers cause large modifications of the superfluid fraction of the system.
UR - http://www.scopus.com/inward/record.url?scp=0141973601&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.91.080403
DO - 10.1103/PhysRevLett.91.080403
M3 - Article
AN - SCOPUS:0141973601
VL - 91
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 8
ER -