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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics III

Q 62.13: Poster

Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer

Towards splitting single atom trajectories over macroscopic distances — •Gautam Ramola, Carsten Robens, Jonathan Zopes, Wolfgang Alt, Dieter Meschede, and Andrea Alberti — Institut für Angewandte Physik, Universität Bonn

Ultracold atoms in optical lattices are versatile and robust systems allowing unprecedented control over atomic states for wide-ranging applications in quantum optics and quantum information processing. Recent developments in state-dependent transport offer advanced control over the quantum dynamics of single particles, e.g., as required for a single atom interferometer[1]. We apply optimal control theory to realize robust coherent transport of atoms over large distances. This holds promise for coherently splitting atoms up to macroscopic distances at the millimeter scale. Key components in the realization of such macroscopic state-dependent transport are two optical phase-locked loops(PLL). I will present recent progress in the development of a versatile vector generator, using a DDS chip interfaced with a FPGA controller for real-time fast programming, which will produce the RF reference signal in the PLL servo system enabling us to program complex transport sequences in real-time.

[1] A. Steffen et al. Digital atom interferometer with single particle control on a discretized space-time geometry. PNAS 109, 9770-9774 (2012)