Light propagation in atomic Mott Insulators

Details Light propagation in atomic Mott Insulators Light propagation in atomic Mott Insulators

2007-10-29

arxiv.org/abs/0710.5444v2

Journal of the European Optical Society - Rapid Publications 3, 08005 (2008)

Physics

Optics

Scientific paper

10.2971/jeos.2008.08005

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 $\Lambda$ 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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