Raman superradiance and spin lattice of ultracold atoms in optical cavities

• Published in: New journal of physics Vol. 15; no. 8; pp. 83037 - 17
• Main Authors: Safaei, S, Müstecapl o lu, Ö E, Tanatar, B
• Format: Journal Article
• Language: English
• Published: IOP Publishing 20-08-2013
• Subjects: Evolution; Holes; Lasers; Lattices; Mathematical analysis; Mathematical models; Pumps; Synthesis
• ISSN: 1367-2630; 1367-2630
• DOI: 10.1088/1367-2630/15/8/083037

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.