Comparative study of light storage in antirelaxation-coated and buffer-gas-filled alkali vapor cells

TL;DR

This study compares light storage capabilities in alkali vapor cells with different internal coatings and gases, revealing that buffer-gas-filled cells significantly outperform coated cells in storage duration and efficiency, advancing quantum memory technology.

Contribution

It provides a direct comparison between antirelaxation-coated and buffer-gas-filled cells, highlighting the superior performance of buffer-gas-filled cells for quantum memory applications.

Findings

Buffer-gas-filled cells have ~10 times longer storage time.

Buffer-gas-filled cells exhibit higher storage efficiency.

Results support development of field-deployable quantum memories.

Abstract

We perform a comparative study of light storage in antirelaxation-coated and buffer-gas-filled alkali-vapor cells using electromagnetically induced transparency (EIT) in warm rubidium vapor. The use of a buffer-gas-filled cell resulted in $\approx$10-fold improvement in storage time and efficiency compared to antirelaxation coated cells. Our findings contribute to the development of future field-deployable high-performance quantum memories.