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Tunable dipolar resonances and Einstein-de Haas effect in a 87Rb-atom condensate
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Tunable dipolar resonances and Einstein-de Haas effect in a 87Rb-atom condensate
Bibliographic description
| title: | Tunable dipolar resonances and Einstein-de Haas effect in a 87Rb-atom condensate |
| author: | Świsłocki Tomasz, Sowiński Tomasz, Pietraszewicz Joanna, Brewczyk Mirosław, Lewenstein Maciej, Zakrzewski Jakub  , Gajda Mariusz
|
| journal title: | Physical Review. A, Atomic, Molecular, and Optical Physics |
| volume: | 83 |
| issue: | 6 |
| date of publication : | 2011 |
| article ID: | 063617 |
| ISSN: |
1050-2947 |
| eISSN: |
1094-1622 1538-4446 |
| DOI: | |
| language: | English |
| journal language: | English |
| abstract in English: | We theoretically study a spinor condensate of Rb87 atoms in a F=1 hyperfine state confined in an optical dipole trap. Putting initially all atoms in an mF=1, component we observe a significant transfer of atoms to other, initially empty Zeeman states exclusively due to dipolar forces. Because of conservation of a total angular momentum the atoms going to other Zeeman components acquire an orbital angular momentum and circulate around the center of the trap. This is a realization of the Einstein-de Haas effect in a system of cold gases. We show that the transfer of atoms via dipolar interactions is possible only when the energies of the initial and the final sates are equal. This condition can be fulfilled utilizing a resonant external magnetic field, which tunes energies of involved states via the linear Zeeman effect. We found that there are many final states of different spatial density, which can be tuned selectively to the initial state. We show a simple model explaining high selectivity and controllability of weak dipolar interactions in the condensate of Rb87 atoms. |
| keywords in English: | quantum gases |
| affiliation: | Wydział Lekarski : Zakład Histologii, Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego |
| type: | journal article |
| subtype: | academic paper |
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Projekt „Repozytorium otwartego dostępu do dorobku naukowego i dydaktycznego UJ” współfinansowany w ramach poddziałania 2.3.1 „Cyfrowe udostępnianie zasobów nauki” Programu Operacyjnego Polska Cyfrowa z Europejskiego Funduszu Rozwoju Regionalnego i budżetu państwa na podstawie umowy o dofinansowanie nr POPC.02.03.01-00-0030/17-00
