Raman superradiance and spin lattice of ultracold atoms in optical cavities

Date
2013
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Source Title
New Journal of Physics
Print ISSN
Electronic ISSN
1367-2630
Publisher
IOP Institute of Physics Publishing
Volume
15
Issue
Pages
083037-1 - 083037-14
Language
English
Type
Article
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Abstract

We investigate the synthesis of a hyperfine spin lattice in an atomic Bose-Einstein condensate, with two hyperfine spin components, inside a one-dimensional high-finesse optical cavity, using off-resonant superradiant Raman scattering. Spatio-temporal evolution of the relative population of the hyperfine spin modes is examined numerically by solving the coupled cavity-condensate mean-field equations in the dispersive regime. We find, analytically and numerically, that beyond a certain threshold of the transverse laser pump, Raman superradiance and self-organization of the hyperfine spin components occur simultaneously and as a result a magnetic lattice is formed. The effects of an extra laser pump parallel to the cavity axis and the time dependence of the pump strength on the synthesis of a sharper lattice are also addressed.

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Keywords
Atomic Bose-Einstein condensate, Dispersive regime, Magnetic lattice, Mean-field equations, Optical cavities, Self organizations, Spatiotemporal evolution, Ultracold atoms, Bose-Einstein condensation, Pumping (laser), Radiation, Superradiance, Optical lattices
Citation
Published Version (Please cite this version)