Robb, G. R. M. (2012) Superradiant exchange of orbital angular momentum between light and cold atoms. Physical Review A, 85 (2). -. ISSN 1050-2947
Full text not available in this repository. (Request a copy from the Strathclyde author)Abstract
An analysis of superradiant scattering of light by ultracold atoms is presented in which the pump and scattered light consist of hollow counterrotating Laguerre-Gaussian beams possessing orbital angular momentum. It is shown that the interaction between the Laguerre-Gaussian beams and the atoms can give rise to a superradiant instability in which orbital angular momentum is transferred to the atoms and the probe field is amplified. In the case where the atoms constitute a dilute Bose-Einstein condensate (BEC) that is trapped in a one-dimensional ring geometry, the transfer of orbital angular momentum to the BEC during the instability means that the BEC spontaneously develops rotation in the ring.
| Item type: | Article |
|---|---|
| ID code: | 39820 |
| Keywords: | orbital angular momentum , light, optics, cold atoms, Optics. Light |
| Subjects: | Science > Physics > Optics. Light |
| Department: | Faculty of Science > Physics |
| Related URLs: | |
| Depositing user: | Pure Administrator |
| Date Deposited: | 29 May 2012 10:32 |
| Last modified: | 29 May 2012 10:32 |
| URI: | http://strathprints.strath.ac.uk/id/eprint/39820 |
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