Bloch oscillations of quasispin polaritons in a magneto-optically controlled atomic ensemble

TL;DR

This paper investigates the behavior of quasispin polaritons in a magneto-optically controlled atomic ensemble, revealing Bloch oscillations in one polariton component through experimental data and theoretical analysis.

Contribution

It introduces the concept of Bloch oscillations of quasispin polaritons in a tripod atomic system under magnetic control, combining experimental data with theoretical modeling.

Findings

One polariton component propagates freely.

Another component exhibits Bloch oscillations.

Experimental data supports the theoretical model.

Abstract

We consider the propagation of a quantized polarized light in a magneto-optically manipulated atomic ensemble with a tripod configuration. Polariton formalism is applied when the medium is subjected to a washboard magnetic field under electromagnetically induced transparency. The dark-state polariton with multiple components is achieved. We analyze quantum dynamics of the dark-state polariton by some experiment data from rubidium D1-line. It is found that one component propagates freely, however the wavepacket trajectory of the other component performs Bloch oscillations.