Correlated scattering of photons from a trapped Bose-Einstein condensate

TL;DR

This paper investigates how photon correlations from a trapped Bose-Einstein condensate depend on scattering angles, interaction strength, and time intervals, revealing angle-dependent coherence enhancements and their decay with stronger atomic interactions.

Contribution

It demonstrates angle-dependent second-order coherence effects in photon scattering from a BEC and how these effects diminish with increased atomic interactions.

Findings

Photon coherence is enhanced at specific scattering angles.

Enhancement varies periodically with photon time intervals.

Stronger atomic interactions reduce coherence enhancement.

Abstract

The second-order coherence of photons scattered from a trapped Bose-Einstein condensate is found to be enhanced for the scattering angles that are either the same or symmetrical with respect to the direction of laser propagation. The enhancement occurs periodically with respect to the time interval between photons, and becomes less and less pronounced with increasing the strength of the interaction between atoms.