Quantum kinetic theory model of a continuous atom laser
Abstract
We investigate the feasible limits for realising a continuously evaporated atom laser with high-temperature sources. A plausible scheme for realising a truly continuous atom laser is to outcouple atoms from a partially condensed Bose gas, whilst continuously reloading the system with non-condensed thermal atoms and performing evaporative cooling. Here we use quantum kinetic theory to model this system and estimate feasible limits for the operation of such a scheme. For sufficiently high temperatures, the figure of merit for the source is shown to be the phase-space flux. The dominant process limiting the usage of sources with low phase-space flux is the three-body loss of the condensed gas. We conclude that certain double-magneto-optical trap (MOT) sources may produce substantial mean condensate numbers through continuous evaporation, and provide an atom laser source with a narrow linewidth and reasonable flux.
Cite
@article{arxiv.1011.5296,
title = {Quantum kinetic theory model of a continuous atom laser},
author = {G. R. Dennis and Matthew J. Davis and J. J. Hope},
journal= {arXiv preprint arXiv:1011.5296},
year = {2013}
}
Comments
28 pages, 5 figures