Stuttgart 2012 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 61: Quanteneffekte: Lichtstreuung

Q 61.7: Talk

Friday, March 16, 2012, 12:00–12:15, V7.01

Quantum holograms based on the Faraday interaction. Spontaneous emission in such systems. — •Denis Vasilyev and Klemens Hammerer — Leibniz Universität Hannover, 30167 Hannover, Germany

We present a scheme for parallel spatially multimode quantum memory for light based on Faraday interaction of light with atoms. The medium for the hologram is a spatially extended ensemble of cold spin-polarized atoms. A quantum hologram capable of storing entangled images can become an important ingredient in quantum information processing and quantum imaging.

The Faraday interaction has been recognized as a valuable tool in the light to atoms memory mapping for atomic ensembles at room temperature. Much progress has been made using a spin 1/2 model for the atoms to describe the coherent transfer of information between the two parties. Real atoms have a complicated level structure which alters the dynamical equations and decay rates. In this work we take into account spontaneous emission and give the full level structure corrections for real atoms.