Quantum memory for light using extended atomic ensembles in a tunable cavity

TL;DR

This paper demonstrates how tuning a cavity can enable near-perfect storage and retrieval of single-photon pulses in extended atomic ensembles, optimizing quantum memory performance.

Contribution

It introduces a cavity tuning method for efficient quantum memory in extended atomic ensembles, analyzing optimal regimes and effects of time jitter.

Findings

Near-unit efficiency in storing and recalling photon pulses

Optimal cavity tuning regimes identified

Time jitter impact on efficiency analyzed

Abstract

Cavity-assisted storage and retrieval of single-photon wave packets in optically thin spatially extended resonant materials are analyzed. It is shown that the use of cavity tuning allows one to store and recall time-symmetric double-sided exponential pulses with near unit efficiency. The optimal regime of the cavity tuning is determined and the effect of time jitter on the storage efficiency is analyzed.