Spontaneous and parametric processes in warm rubidium vapours

TL;DR

This paper explores spontaneous and stimulated nonlinear optical processes in warm rubidium vapours, demonstrating frequency conversion techniques relevant for quantum information interfaces.

Contribution

It provides experimental insights into efficient stimulated Raman scattering and multi-photon assisted blue light generation in rubidium vapours for quantum applications.

Findings

High efficiency of stimulated Raman scattering observed.

Successful generation of coherent blue light via multi-photon transitions.

Potential for improved light-atom quantum interfaces.

Abstract

Warm rubidium vapours are known to be a versatile medium for a variety of experiments in atomic physics and quantum optics. Here we present experimental results on producing the frequency converted light for quantum applications based on spontaneous and stimulated processes in rubidium vapours. In particular, we study the efficiency of spontaneously initiated stimulated Raman scattering in the {\Lambda}-level configuration and conditions of generating the coherent blue light assisted by multi-photon transitions in the diamond-level configuration. Our results will be helpful in search for new types of interfaces between light and atomic quantum memories.