Continuous atom laser with Bose-Einstein condensates involving three-body interactions

TL;DR

This paper demonstrates a method to produce a continuous, coherent matter wave from a Bose-Einstein condensate by spatially controlling scattering length variations, including three-body interactions, without altering the trap.

Contribution

It introduces a novel approach for continuous atom laser emission utilizing atomic interactions and three-body effects, with analytical parameters for experimental realization.

Findings

Achieved continuous matter wave emission in simulations.

Controlled scattering length variations enable stable outcoupling.

Provided analytical guidelines for experimental setup.

Abstract

We demonstrate, through numerical simulations, the emission of a coherent continuous matter wave of constant amplitude from a Bose-Einstein Condensate in a shallow optical dipole trap. The process is achieved by spatial control of the variations of the scattering length along the trapping axis, including elastic three body interactions due to dipole interactions. In our approach, the outcoupling mechanism are atomic interactions and thus, the trap remains unaltered. We calculate analytically the parameters for the experimental implementation of this CW atom laser.