Paired atom laser beams created via four-wave mixing
Abstract
A method to create paired atom laser beams from a metastable helium atom laser via four-wave mixing is demonstrated. Radio frequency outcoupling is used to extract atoms from a Bose Einstein condensate near the center of the condensate and initiate scattering between trapped and untrapped atoms. The unequal strengths of the interactions for different internal states allows an energy-momentum resonance which leads to the creation of pairs of atoms scattered from the zero-velocity condensate. The resulting scattered beams are well separated from the main atom laser in the 2-dimensional transverse atom laser profile. Numerical simulations of the system are in good agreement with the observed atom laser spatial profiles, and indicate that the scattered beams are generated by a four-wave mixing process, suggesting that the beams are correlated.
Cite
@article{arxiv.0806.0212,
title = {Paired atom laser beams created via four-wave mixing},
author = {R. G. Dall and L. J. Byron and A. G. Truscott and G. R. Dennis and M. T. Johnsson and J. J. Hope},
journal= {arXiv preprint arXiv:0806.0212},
year = {2009}
}
Comments
5 pages, 3 figures