Efficiency optimization for Atomic Frequency Comb storage

TL;DR

This paper improves the efficiency of Atomic Frequency Comb quantum memory by optimizing preparation procedures, supported by experimental validation showing a net gain from 10% to 17%, and explores effects of magnetic fields on the protocol.

Contribution

It introduces an optimized preparation method for Atomic Frequency Comb storage that enhances efficiency, validated through experiments in a \\TMYAG crystal.

Findings

Efficiency increased from 10% to 17% with optimization.

Optimized protocol performs well under different magnetic fields.

Zeeman and superhyperfine interactions influence storage performance.

Abstract

We study the efficiency of the Atomic Frequency Comb storage protocol. We show that for a given optical depth, the preparation procedure can be optimize to significantly improve the retrieval. Our prediction is well supported by the experimental implementation of the protocol in a \TMYAG crystal. We observe a net gain in efficiency from 10% to 17% by applying the optimized preparation procedure. In the perspective of high bandwidth storage, we investigate the protocol under different magnetic fields. We analyze the effect of the Zeeman and superhyperfine interaction.