Resonant Einstein-de Haas Effect in a Rubidium Condensate

Journal Article · Fri Sep 28 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.130401· OSTI ID:21024189

Gawryluk, Krzysztof; Brewczyk, Miroslaw ^[1]; Bongs, Kai ^[2]; Gajda, Mariusz ^[3]

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1. Instytut Fizyki Teoretycznej, Uniwersytet w Bialymstoku, ulica Lipowa 41, 15-424 Bialystok (Poland)
2. Institut fuer Laser-Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)
3. Instytut Fizyki PAN, Aleja Lotnikow 32/46, 02-668 Warsaw (Poland)

We theoretically consider a spin polarized, optically trapped condensate of {sup 87}Rb atoms in F=1. We observe a transfer of atoms to other Zeeman states due to the dipolar interaction which couples the spin and the orbital degrees of freedom. Therefore the transferred atoms acquire an orbital angular momentum. This is a realization of the Einstein-de Haas effect in systems of cold gases. We find resonances which make this phenomenon observable even in very weak dipolar systems, when the Zeeman energy difference on transfer is fully converted to rotational kinetic energy.

• OSTI ID: 21024189
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 13 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONDENSATES
DEGREES OF FREEDOM
KINETIC ENERGY
ORBITAL ANGULAR MOMENTUM
RUBIDIUM 87
SPIN
SPIN ORIENTATION
ZEEMAN EFFECT