Origin of nonlinear optical processes in matter-wave superradiance
Quantum Gases
2010-06-24 v1 Quantum Physics
Abstract
We study a highly efficient, matter-wave amplification mechanism in a longitudinally-excited, Bose-Einstein condensate and reveal a very large enhancement due to nonlinear gain from a sixmatter- optical, wave-mixing process involving four photons. Under suitable conditions this opticallydegenerate, four-photon process can be stronger than the usual two-photon inelastic light scattering mechanism, leading to nonlinear growth of the observed matter-wave scattering independent of any enhancement from bosonic stimulation. Our theoretical framework can be extended to encompass even higher-order, nonlinear superradiant processes that result in higher-order momentum transfer.
Keywords
Cite
@article{arxiv.1006.4619,
title = {Origin of nonlinear optical processes in matter-wave superradiance},
author = {L. Deng and E. W. Hagley},
journal= {arXiv preprint arXiv:1006.4619},
year = {2010}
}