Twin stimulated amplification of light and matter waves in an atom-photon pair laser
Abstract
We consider ultracold atoms in a far detuned optical lattice orientated across a high-Q optical resonator. Applying an external driving laser to the atoms, which is red detuned from the cavity mode by one vibrational quantum, induces cavity-enhanced sideband cooling. For a dense and cold enough atomic ensemble we predict an oscillation threshold for optical Raman sideband lasing concurrent with coherent matter-wave amplification. Above this oscillation threshold photons and atoms in the lowest band are dominantly created pairwise via stimulated emission with a strong suppression of competing spontaneous processes. In close analogy to a nondegenerate parametric oscillator we find sub-Poissonian photon statistics and almost perfect nonclassical atom-photon number correlations. Injecting atoms in higher vibrational bands via tunneling or incoherent scattering then leads to continuous, simultaneous generation of a coherent atom beam and laser light with nonclassical atom-field correlations.
Keywords
Cite
@article{arxiv.0712.2956,
title = {Twin stimulated amplification of light and matter waves in an atom-photon pair laser},
author = {Thomas Salzburger and Helmut Ritsch},
journal= {arXiv preprint arXiv:0712.2956},
year = {2009}
}