Lensing and Waveguiding of Ultraslow Pulses in an Atomic Bose-Einstein Condensate

TL;DR

This paper explores how an atomic Bose-Einstein condensate can be used to lens and guide ultraslow light pulses, with controllable delays and mode properties via trap parameters and temperature.

Contribution

It demonstrates controllable lensing and waveguiding of ultraslow pulses in a BEC, including mode support and focal length tuning through experimental parameters.

Findings

Significant controllable time delay between lensed and guided pulses.

Number of guided modes depends on trap parameters and temperature.

Focal length can be tuned by adjusting condensate conditions.

Abstract

We investigate lensing and waveguiding properties of an atomic Bose-Einstein condensate for ultraslow pulse generated by electromagnetically induced transparency method. We show that a significant time delay can be controllably introduced between the lensed and guided components of the ultraslow pulse. In addition, we present how the number of guided modes supported by the condensate and the focal length can be controlled by the trap parameters or temperature.