| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 3, 2008
|
|
|---|---|---|
| Article Number | 08005 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.2971/jeos.2008.08005 | |
| Published online | 25 January 2008 | |
Regular papers
Light propagation in atomic Mott Insulators
BEC-CNR-INFM and Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38050 Povo, Italy
Received:
5
November
2007
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 L 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.
Key words: Atomic Mott insulator / photonic crystal / polaritonic waves / slow light / photon lifter
© The Author(s) 2008. All rights reserved.
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