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A: Fachverband Atomphysik

A 46: Ultra-cold plasmas and Rydberg systems (with Q)

A 46.1: Talk

Friday, March 22, 2013, 11:00–11:15, F 428

Periodic emission of entangled Rydberg atoms from superatomic Rydberg clouds — •Michael Genkin, Sebastian Wüster, Sebastian Möbius, Alexander Eisfeld, and Jan Michael Rost — MPI für Physik komplexer Systeme, 01187 Dresden, Germany

We consider a scheme in which dipole-dipole interactions between coherently Rydberg-excited atom clouds (superatoms) are used to generate periodic emission of entangled atom pairs. As demonstrated in earlier work [1], the dipole-dipole interactions between two such clouds can lead to their break up by emission of a single atom pair. In this scenario, the entire, initially coherently shared Rydberg excitation, is eventually localized on the emitted atoms. We propose a setup in which this feature is employed to generate a source for entangled atoms pairs, by periodically re-exciting the remaining ground state atoms to a superatomic state. Depending on the prepared initial state, the entanglement can be encoded either in the motion of the atoms or in the angular quantum number of the Rydberg excitation. Our preliminary findings suggest that above-kHz emission rates can be reached.

S. Möbius et al, arXiv:1212.1267 [physics.atom-ph]