Cavity-enhanced detection of magnetic orders in lattice spin models

Details Cavity-enhanced detection of magnetic orders in lattice spin models Cavity-enhanced detection of magnetic orders in lattice spin models

2009-01-10

arxiv.org/abs/0901.1372v1

Phys. Rev. A 79, 013630 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures, PRA in press

Scientific paper

10.1103/PhysRevA.79.013630

We develop a general scheme for detecting spin correlations inside a two-component lattice gas of bosonic atoms, stimulated by the recent theoretical and experimental advances on analogous systems for a single component quantum gas. Within a linearized theory for the transmission spectra of the cavity mode field, different magnetic phases of a two-component (spin 1/2) lattice bosons become clearly distinguishable. In the Mott-insulating (MI) state with unit filling for the two-component lattice bosons, three different phases: antiferromagnetic, ferromagnetic, and the XY phases are found to be associated with drastically different cavity photon numbers. Our suggested study can be straightforwardly implemented with current cold atom experiments.

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