Quantum Device and Architecture based on NV Centers for Quantum Networks
Kae Nemoto, Simon J. Devitt, Michael Trupke, Ashley M. Stephens, Mark S. Everitt, K. Buczak, T. Noebauer, Jörg Schmiedmayer, William J. Munro
Abstract
In recent years, NV centers in diamond has attracted significant attention as a candidate for quantum information devices. The negatively charged NV center, in particular, has been intensely investigated [1-3]. NV- centers host both an electron spin qubit and a nitrogen nuclear spin, in our case a nuclear spin-1/2 of 15N is imbedded. The ground state of the electron spin qubit has a long coherence time and an optical transition at 637nm. The nuclear spins may be considered as a long-lived quantum memory, which has been experimentally demonstrated [2]. Because of these preferable quantum properties, NV centers have been considered as a good candidate for implementation of quantum information processing and there has been a number of theoretically propose designs for quantum information processing [3].