Focus on Quantum Memories

TL;DR

This paper reviews recent advances in quantum memories, highlighting experimental implementations across various platforms and theoretical developments including new protocols and applications, emphasizing the field's rapid progress.

Contribution

It provides a comprehensive overview of both experimental and theoretical progress in quantum memories, including new protocols and potential applications.

Findings

Progress in cold gases, vapors, and solid-state systems

Development of new quantum memory protocols

Theoretical proposals for quantum error correction in memories

Abstract

Quantum memories are essential for quantum information processing and long-distance quantum communication. The field has recently seen a lot of progress, and the present focus issue offers a glimpse of these developments, showing both experimental and theoretical results from many of the leading groups around the world. On the experimental side, it shows work on cold gases, warm vapors, rare-earth ion doped crystals and single atoms. On the theoretical side there are in-depth studies of existing memory protocols, proposals for new protocols including approaches based on quantum error correction, and proposals for new applications of quantum storage. Looking forward, we anticipate many more exciting results in this area.