Parametric amplification of matter waves in dipolar spinor Bose-Einstein condensates
Abstract
Spin-changing collisions may lead under proper conditions to the parametric amplification of matter waves in spinor Bose-Einstein condensates. Magnetic dipole-dipole interactions, although typically very weak in alkaline atoms, are shown to play a very relevant role in the amplification process. We show that these interactions may lead to a strong dependence of the amplification dynamics on the angle between the trap axis and the magnetic-field orientation. We analyze as well the important role played by magnetic-field gradients, which modify also strongly the amplification process. Magnetic-field gradients must be hence carefully controlled in future experiments, in order to observe clearly the effects of the dipolar interactions in the amplification dynamics.
Cite
@article{arxiv.1005.2011,
title = {Parametric amplification of matter waves in dipolar spinor Bose-Einstein condensates},
author = {F. Deuretzbacher and G. Gebreyesus and O. Topic and M. Scherer and B. Lücke and W. Ertmer and J. Arlt and C. Klempt and L. Santos},
journal= {arXiv preprint arXiv:1005.2011},
year = {2015}
}