Probing spin exchange interaction in two-species bosons in optical lattices by cavity-enhanced light scattering
Institute of Theoretical Physics, Shanxi University, Taiyuan, 030006, P.R. China
Revised: 24 July 2009
Published online: 4 September 2009
We study the system that two-component atoms, which are confined in an off-resonance optical lattice, interact with two cavity modes. It has a rich phase diagram composed of many phases, such as anti-ferromagnetic, ferromagnetic, and the XY phases in Mott-insulating (MI) region with odd filling factor. These phases could be distinguished by analyzing the photon numbers with two methods, i.e. the semiclassical approximation and the quantized approach, depending on the intensity of the probe light.
PACS: 03.75.Lm – Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations / 03.75.Mn – Multicomponent condensates; spinor condensates / 32.70.Jz – Line shapes, widths, and shifts / 42.50.-p – Quantum optics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009