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Friday, 10 July 2009 16:40

Quantum communication has spawned much interest in recent years, however most long-distance quantum communication protocols require reliable sources of single photons and quantum memories that store qubits in matter-based internal states and use shared entanglement to overcome the exponential loss in photonic channels. Rare earth ion-doped crystals are promising candidates for ensemble-based quantum memories because they are solid-state systems with narrow optical transitions and seconds-scale coherence times. This long coherence time is critical for any storage system. We employ once such material, Pr3+:Y2SiO5, in our effort to create a quantum memory based on the protocol of Duan et al. That protocol requires a three level Λ-type quantum system with long lived ground states and Raman scattering to move population between them. In addition to a quantum memory this system also lends itself to operation as a deterministic single photon source another highly sought after goal for quantum information applications.

 

Last Updated on Monday, 21 February 2011 15:11
 
DLCZ publications PDF Print E-mail

Tailored State Preparation for Solid-State Quantum Memory

J. Fan, E. Goldschmidt, S. Polyakov, S. Beavan, A. Migdall

41st Annual Meeting of the APS DAMOP, May 25–29, 2010; Houston, Texas

 


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