Theory of Coherent Raman Superradiance Imaging of Condensed Bose Gases
H. Uys, P. Meystre
TL;DR
This paper presents a theoretical model for superradiant Raman scattering in Bose-Einstein condensates, demonstrating how transmitted light images reveal condensate coherence and match experimental observations, including quantum fluctuation effects.
Contribution
The paper introduces a multimode theoretical framework that accurately describes superradiant Raman scattering and accounts for quantum fluctuations in Bose-Einstein condensates.
Findings
Good agreement with experimental spatial features
Quantum fluctuations explain shot-to-shot variability
Transmitted light images probe long-range coherence
Abstract
We model the off-resonant superradiant Raman scattering of light from a cigar-shaped atomic Bose-Einstein condensate. Absorption images of transmitted light serve as a direct probe of long range coherence in the condensate. Our multimode theory is in good agreement with the time-dependent spatial features observed in recent experiments, and the inclusion of quantum fluctuations in the initial stages of the superradiant emission accounts well for shot-to-shot fluctuations.
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