Optimizing inhomogeneous spin ensembles for quantum memory

TL;DR

This paper introduces a method to enhance quantum memory fidelity in inhomogeneous spin ensembles by spectral preselection, significantly improving storage and retrieval of quantum information.

Contribution

The paper presents a novel spectral preselection technique to optimize quantum memory performance in inhomogeneous spin ensembles.

Findings

Significant fidelity improvement in quantum memory storage.

Effective spectral preselection enhances quantum information retrieval.

Method applicable to resonator and optical beam-based quantum memories.

Abstract

We propose a general method to maximize the fidelity of writing, storage and reading of quantum information (QI) in a spectrally inhomogeneous spin ensemble used as quantum memory. The method is based on preselecting the optimal spectral portion of the ensemble by a judiciously designed pulse. It allows drastic improvement of quantum memory realized by spin ensembles that store QI from a resonator or an optical beam.