Pulsed Raman output coupler for an atom laser

TL;DR

This paper presents a comprehensive theoretical analysis of a pulsed Raman outcoupler for atom lasers, modeling the process in three dimensions and exploring how the output can probe and control the quantum state of a Bose-Einstein condensate.

Contribution

It introduces a detailed 3D theoretical model of a pulsed Raman outcoupler for atom lasers, connecting to experiments and enabling quantum state probing and control.

Findings

Analyzes momentum distribution of output atoms.

Shows the output beam can probe the quantum state.

Demonstrates potential for nonlinear control of the atom laser.

Abstract

We theoretically study a pulsed stimulated two-photon Raman outcoupler for an atom laser using a full three-dimensional description. A finite-temperature trapped Bose-condensed atomic gas is treated self-consistently by the Hartree-Fock-Bogoliubov equations. The model is closely related to a recent experiment on optical outcoupling [E.W. Hagley et al., Science 283, 1706 (1999)]. We analyze the momentum distribution of the output atoms and show how the output beam may be used as a probe of the quantum state for the trapped atomic gas and how it could be engineered and controlled in a nonlinear way.