Observation of interference between two molecular Bose-Einstein condensates
Quantum Gases
2011-07-05 v1
Abstract
We have observed interference between two Bose-Einstein condensates of weakly bound Feshbach molecules of fermionic Li atoms. Two condensates are prepared in a double-well trap and, after release from this trap, overlap in expansion. We detect a clear interference pattern that unambiguously demonstrates the de Broglie wavelength of molecules. We verify that only the condensate fraction shows interference. For increasing interaction strength, the pattern vanishes because elastic collisions during overlap remove particles from the condensate wave function. For strong interaction the condensates do not penetrate each other as they collide hydrodynamically.
Cite
@article{arxiv.1104.5454,
title = {Observation of interference between two molecular Bose-Einstein condensates},
author = {Christoph Kohstall and Stefan Riedl and Edmundo Sánchez Guajardo and Leonid Sidorenkov and Johannes Hecker Denschlag and Rudolf Grimm},
journal= {arXiv preprint arXiv:1104.5454},
year = {2011}
}