Hamburg 2009 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 28: Quanteninformation: Photonen III

Q 28.3: Talk

Tuesday, March 3, 2009, 17:00–17:15, VMP 6 HS-D

Fast Excitation and Photon Emission of a Coupled Atom-Cavity System — •Joerg Bochmann, Martin Mücke, Holger Specht, Bernhard Weber, David Moehring, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching

Single atoms coupled to optical cavities provide unique systems to study light-matter interaction in the quantum regime. Naturally, these systems are well suited for atom-photon entanglement and distributed quantum networks [1].

We report on the fast excitation of a single Rb atom coupled to an optical cavity using laser pulses much shorter than all relevant processes [2]. The system subsequently displays an oscillatory energy exchange between atom and cavity field leading to pronounced amplitude modulations of the emitted single photons. We further show that the cavity frequency can be used as a parameter to design the single photon shape and spectrum, e.g. in a superpostion of two tunable frequencies.

[1] T. Wilk et al., Science 317, 488 (2007)

[2] J. Bochmann et al., Phys. Rev. Lett. 101, 223601 (2008)

[3] C. DiFidio et al., Phys. Rev. A 77, 043822 (2008)