Title:Quantum Journal Club: Light storage on the time scale of a minute
Speaker: Haoxiang Yang Tsinghua University
Time: 2013-12-12 15:00-2013-12-12 16:00
Venue:FIT 1-222


Light storage on the minute scale is an important capability for future scalable quantum information networks spanning intercontinental distances. We employ an ultracold atomic gas confined in a one-dimensional optical lattice for long-term light storage. The differential ac Stark shift of the ground-level microwave transition used for storage is reduced to a sub-Hz level by the application of a magic-valued magnetic field. The 1/e lifetime for storage of coherent states of light is prolonged up to 16 s by a microwave dynamic decoupling protocol.

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