Temporally multiplexed storage of images in a Gradient Echo Memory

TL;DR

This paper demonstrates the use of gradient echo memory in hot atomic vapor for storing and retrieving multiple images with spatial and temporal multiplexing, analyzing effects like atomic diffusion on resolution.

Contribution

It introduces a method for multiplexed image storage in atomic vapor using gradient echo memory, including experimental analysis of spatial resolution and diffusion effects.

Findings

Normalized cross-correlation of 88% for short storage times

Successful storage of multiple images with spatial and temporal multiplexing

Characterization of atomic diffusion impact on image resolution

Abstract

We study the storage and retrieval of images in a hot atomic vapor using the gradient echo memory protocol. We demonstrate that this technique allows for the storage of multiple spatial modes. We study both spatial and temporal multiplexing by storing a sequence of two different images in the atomic vapor. The effect of atomic diffusion on the spatial resolution is discussed and characterized experimentally. For short storage time a normalized cross-correlation between a retrieved image and its input of 88 % is reported.