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arXiv · 0710.5444

Light propagation in atomic Mott Insulators

Francesco Bariani·Iacopo Carusotto
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Abstract

We study radiation-matter interaction in a system of ultracold atoms trapped in an optical lattice in a Mott insulator phase. We develop a fully general quantum model, and we perform calculations for a one-dimensional geometry at normal incidence. Both two- and three-level $Λ$ atomic configurations are studied. The polariton dispersion and the reflectivity spectra are characterized in the different regimes, for both semi-infinite and finite-size geometries. We apply this model to propose a photon energy lifter experiment: a device which is able to shift the carrier frequency of a slowly travelling wavepacket without affecting the pulse shape nor its coherence.

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physics.opticscond-mat.otherphysics.atom-ph

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Francesco Bariani, Iacopo Carusotto. 2008-02-11. Light propagation in atomic Mott Insulators. https://doi.org/10.2971/jeos.2008.08005

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