Magnetic field dependence and the possibility of filtering ultraslow light pulses in atomic gases with Bose-Einstein condensates

TL;DR

This paper theoretically investigates how external magnetic fields influence ultraslow light in Bose-Einstein condensates of alkali-metal atoms, exploring potential methods for optical pulse filtering based on this phenomenon.

Contribution

It introduces a Green function formalism approach to analyze magnetic field effects on ultraslow light in Bose-Einstein condensates, proposing a new filtering mechanism.

Findings

Group velocity depends strongly on magnetic field intensity.

Ultraslow light can be tuned near atomic resonances.

Filtering of optical pulses is feasible using magnetic field control.

Abstract

This paper studies theoretically the ultraslow light phenomenon in Bose-Einstein condensates of alkali-metal atoms. The description is based on the linear approach that is developed in the framework of the Green function formalism. It is pointed out that the group velocity of light pulses that are tuned up close to resonant lines of the alkali atoms' spectrum may strongly depend on the intensity of the external static magnetic field. The possibility of filtering optical pulses using the ultraslow light phenomenon in Bose condensates is discussed.