Photonic Integrated Quantum Memory in Rare‐Earth Doped Solids

Photonic Integrated Quantum Memory in Rare‐Earth Doped Solids Abstract An optical quantum memory is a device that can store photonic quantum information and release it after a controlled time. It is an essential component for overcoming channel losses in large‐scale quantum networks. Optical quantum memories have been demonstrated with various physical systems including atomic gases, single atoms in optical cavities, and rare‐earth‐ion doped solids. Now, quantum memories are marching toward min...