Dipolar Bose-Einstein condensate of Stationary-Light Dark-state Polaritons

TL;DR

This paper proposes a scheme to realize Bose-Einstein condensation of stationary-light dark-state polaritons with dipolar interactions in Rydberg atomic vapors, highlighting stability even with negative dipolar constants.

Contribution

It introduces a novel scheme for BEC of dark-state polaritons with dipolar interactions using a diamond-like coupling in Rydberg atoms.

Findings

Dark-state polariton BEC can be stable with negative dipolar interaction.

The scheme employs a diamond-like coupling in Rydberg atomic vapor.

Normal modes are used to analyze system dynamics.

Abstract

We put forward and discuss in detail a scheme to achieve Bose-Einstein condensation of stationary-light dark-state polaritons with dipolar interaction. To this end we have introduced a diamond-like coupling scheme in a vapor of Rydberg atoms under the frozen gas approximation. To determine the system's dynamics we employ normal modes and identify the dark-state polariton corresponding to one of the modes. We show that in contrast to atomic dipolar ultra-cold vapors dark-state polariton Bose-Einstein condensates proposed here can be stable for a negative dipolar interaction constant.