Laser-induced Rotation of a Trapped Bose-Einstein Condensate

TL;DR

This paper proposes a method using laser-induced dipole potentials to coherently excite and induce rotation in a trapped Bose-Einstein condensate, potentially creating vortex states.

Contribution

It introduces a novel atom optic technique employing four detuned laser beams to control and induce rotation in Bose-Einstein condensates.

Findings

Successful theoretical proposal for inducing rotation

Potential to generate vortex states in BECs

Controlled excitation via laser phase and frequency tuning

Abstract

In this letter, atom optic techniques are proposed to control the excitation of a Bose-Einstein condensate in an atomic trap. We show that by employing the dipole potential induced by four highly detuned travelling-wave laser beams with appropriate phases and frequencies, one can coherently excite a trapped Bose-Einstein condensate composed of ultracold alkali atoms into a state rotating around the trap center. The connection to vortex states is discussed.