Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.39: Poster

Montag, 17. März 2014, 16:30–18:30, Spree-Palais

Controlled preparation of multiple atoms in an optical cavity — •Matthias Körber, Andreas Neuzner, Carolin Hahn, Stephan Ritter, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching

Single neutral atoms trapped in an optical cavity are a powerful experimental system that allows for a high degree of control over light-matter interaction. Starting from a magneto-optical trap we transfer neutral ⁸⁷Rb atoms into a two-dimensional optical lattice at the center of a Fabry-Perot cavity. A high-numerical-aperture objective mounted transversally to the cavity axis allows us to observe and simultaneously address individual atoms. By impinging a resonant laser beam through the addressing system, unwanted atoms can be pushed out from the optical lattice. Subsequently, the atom pattern can be shifted along one axis by rotating a glass plate located in one of the lattice beams. This quasi-deterministic method allows us to prepare a predetermined pattern of atoms in the cavity. After this preparation, a series of operations with thousands of experimental iterations can be performed on one and the same array of atoms. Experimental progress towards the implementation of scalable protocols for quantum information processing will be discussed.