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arXiv · 0901.1372

Cavity-enhanced detection of magnetic orders in lattice spin models

Liping Guo·Shu Chen·B. Frigan·L. You·Yunbo Zhang
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Abstract

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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Liping Guo, Shu Chen, B. Frigan, L. You, Yunbo Zhang. 2009-01-10. Cavity-enhanced detection of magnetic orders in lattice spin models. https://doi.org/10.1103/physreva.79.013630

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