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Q: Fachverband Quantenoptik und Photonik

Q 2: Quanteninformation (Photonen und nichtklassisches Licht I)

Q 2.4: Vortrag

Montag, 19. März 2007, 11:15–11:30, 5L

Delayed Light Pulses Using Cesium Vapor — •David Hoeckel, Matthias Scholz, and Oliver Benson — Humboldt-Universität zu Berlin, Institut für Physik, AG Nanooptik, Hausvogteiplatz 5-7, 10117 Berlin

Many physical realizations are currently exploited as interfaces between single photons and atomic states, and the concept of electromagnetically induced transparency has been introduced as a promising candidate to slow down and store quantum information. We characterize absorption and pulse delays on the D1 transition in Cesium vapor with respect to future storage of narrow-band single photons generated from cavity down-conversion experiments. As a test setup, two phase-locked lasers excite Cesium vapor in a Lambda configuration of which one will be replaced by a single-photon source in subsequent experiments. We achieve transparency windows in the MHz regime with pulse delays of a few 100 ns and discuss decoherence mechanisms between the atomic levels.