Off-resonant Raman echo quantum memory on atoms with natural inhomogeneous broadening in optical QED cavity

TL;DR

This paper proposes a new off-resonant Raman echo quantum memory scheme in optical QED cavities that leverages natural inhomogeneous broadening, enabling robust, long-lived, multi-mode quantum storage with practical implementation.

Contribution

It introduces a novel quantum memory scheme utilizing natural inhomogeneous broadening in atomic ensembles within optical QED cavities, enhancing robustness and practicality.

Findings

Provides a robust and simple coherent control method

Enables efficient long-lived multi-mode quantum memory

Utilizes existing optical techniques for implementation

Abstract

A new scheme of photon echo based quantum memory in the optimal optical QED cavity with off-resonant Raman atomic transition is proposed. The scheme employs the atomic ensembles characterized by an optically thin resonant transition and natural inhomogeneous broadening of the resonant line composed of the arbitrary narrow homogeneous spectral components. The scheme provides robust and quite simple coherent control of the light-atoms dynamics that can be implemented by using an existing optical technique and opens a practical way for realization of the efficient long-lived multi-mode optical quantum memory.