Berlin 2005 – wissenschaftliches Programm

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Q: Quantenoptik und Photonik

Q 3: Poster Quanteninformation, -kommunikation und Quantencomputer

Q 3.15: Poster

Freitag, 4. März 2005, 11:00–12:30, Poster HU

A high-finesse optical Fabry-Perot resonator for cavity QED experiments — •Igor Dotsenko, Wolfgang Alt, Mkrtych Khudaverdyan, Dieter Meschede, Yevhen Miroshnychenko, Dominik Schrader, and Arno Rauschenbeutel — Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, 53115 Bonn

A realization of a controlled coherent interaction between neutral atoms is the main milestone on the way to quantum computation with neutral atoms. For this purpose we plan to deterministically place two atoms into the cavity mode of an optical Fabry-Perot resonator, where the interaction between them can be enhanced by the exchange of a virtual cavity photon. Essential demands on cavities used in quantum information experiments are a high stability of the resonator frequency with respect to the atomic resonance and a photon lifetime much longer than the timescale of an atom-photon coupling. We have recently fulfilled these both requirements. We present a high-finesse (F=1.000.000) cavity which length is actively and continuously stabilized to the subpicometer precision required for the cavity QED experiments. In addition, we discuss realistic entanglement schemes compatible with our experimental parameters.