The effect of light assisted collisions on matter wave coherence in superradiant Bose-Einstein condensates
arXiv:1111.6039 · doi:10.1103/PhysRevLett.108.090401
Abstract
We investigate experimentally the effects of light assisted collisions on the coherence between momentum states in Bose-Einstein condensates. The onset of superradiant Rayleigh scattering serves as a sensitive monitor for matter wave coherence. A subtle interplay of binary and collective effects leads to a profound asymmetry between the two sides of the atomic resonance and provides far bigger coherence loss rates for a condensate bathed in blue detuned light than previously estimated. We present a simplified quantitative model containing the essential physics to explain our experimental data and point at a new experimental route to study strongly coupled light matter systems.
10 pages, 4 figures
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- Dispersive optical detection of magnetic Feshbach resonances in ultracold gases
- Semi-classical Dynamics of Superradiant Rayleigh Scattering in a Bose-Einstein Condensate
- Cooperative effects and photon localization in atomic gases: The two-dimensional case
- Quantum Back-action Limits in Dispersively Measured Bose-Einstein Condensates
- Strong optical self-focusing effect in coherent light scattering with condensates
- Impact of photo-assisted collisions on superradiant light scattering with Bose condensates
- Asymmetric superradiant scattering and abnormal mode amplification induced by atomic density distortion