A quantum memory that can store photonic qubits in matter-based internal states is an important component of many quantum information protocols and a primary building block of quantum repeaters that allow long distance quantum communication over lossy channels. We are developing such a memory based on rare-earth ion-doped crystals. These systems have narrow, free atom-like optical transitions, with the benefit that they are relatively simple solid-state systems. In addition, extremely long potential memory times have been demonstrated in these materials, making them very promising for a variety of quantum information applications.

Elizabeth Goldschmidt is a Ph.D. candidate at the Joint Quantum Institute at the University of Maryland and in the research group of Alan Migdall at the National Institute of Standards and Technology. She received her Bachelor's degree cum laude in physics from Harvard University in 2006. Her current research interests include quantum information processing and memory as well as single and few photon sources and detectors.