Photonic band gaps and defect states induced by excitations of Bose-Einstein condensates in optical lattices
arXiv:cond-mat/9810085 · doi:10.1103/PhysRevA.59.2982
Abstract
We study the interaction of a Bose-Einstein condensate, which is confined in an optical lattice, with a largely detuned light field propagating through the condensate. If the condensate is in its ground state it acts as a periodic dielectric and gives rise to photonic band gaps at optical frequencies. The band structure of the combined system of condensed lattice-atoms and photons is studied by using the concept of polaritons. If elementary excitations of the condensate are present, they will produce defect states inside the photonic band gaps. The frequency of localized defect states is calculated using the Koster-Slater model.
10 pages, 1 figure, RevTex
References in corpus (2)
Cited by in corpus (8)
- Multidimensional solitons in periodic potentials
- Coherent dynamics of Bose-Einstein condensates in high-finesse optical cavities
- Creation of solitons and vortices by Bragg reflection of Bose-Einstein condensates in an optical lattice
- Dissipative dynamics of Bose condensates in optical cavities
- Stabilization of three-dimensional matter-waves solitons in an optical lattice
- Probing the energy bands of a Bose-Einstein condensate in an optical lattice
- Interference scheme to measure light-induced nonlinearities in Bose-Einstein condensates
- Spontaneous emission and atomic line shift in causal perturbation theory