TY - JOUR AU - Elizabeth Goldschmidt AU - Sergey Polyakov AU - Alan Migdall AU - Sarah Beavan AU - Matthew Sellars C2 - Optics Express DA - 2013-04-22 DO - https://doi.org/10.1364/OE.21.010087 LA - en M1 - 21 PB - Optics Express PY - 2013 TI - Storage and retrieval of excitations on a long-lived spin transition in a rare-earth ion-doped crystal ER -