Abstract

Quantum memories for light are important resources as quantum interfaces between light and matter in future quantum information networks. In particular, solid state optical memories based on rare earth ion doped (REID) crystals are of great interest due to their unique physical properties. They provide large number of atoms naturally trapped in a solid with narrow optical and spin transitions. They indeed have excellent optical and spin state coherence times at cryogenic temperatures. Among the various rare-earth doped materials, Pr³⁺ :Y₂SiO₅ crystals have shown excellent properties for light storage and exhibit a level scheme suitable for long lived storage in spin states.

© 2017 IEEE