Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 9: Quanteneffekte: Interferenz und Korrelationen

Q 9.4: Vortrag

Montag, 12. März 2012, 14:45–15:00, V7.01

Cavity-QED of a leaky planar resonator with an atom and an input single-photon pulse — •Denis Gonta1,2 and Peter van Loock1,21Institut of Optik, Information und Photonik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstrasse 7, 91058 Erlangen — 2Optical Quantum Information Theory Group, Max Planck Institute for the Science of Light, Günther-Scharowsky-Str. 1, Bau 26, D-91058 Erlangen

In contrast to the dynamics of an atom-light interface in free space that is governed by a multi-mode interaction of an atom with the surrounding electromagnetic vacuum, the dynamics of a cavity-QED system can be characterized by just three parameters, (i) atom-cavity coupling strength (vacuum Rabi splitting) g, (ii) cavity relaxation rate κ, and (iii) atomic decay rate into the non-cavity modes γ. In the case of an atom inserted into a planar cavity with an input beam coupled to the resonator from the outside, it has been shown that these three parameters (g, κ, γ) are determined not only by the cavity quality factor and the strength of atom-cavity-reservoir coupling, but also by the lateral profile of the input beam [1]. We extend the setup of [1] and determine the cavity-QED parameters of a coupled system of atom, planar (leaky) cavity, and input single-photon pulse as functions of the lateral profile of the pulse. We confirm also that the radiative photon loss into the non-cavity modes can be suppressed by engineering appropriately the lateral profile of the input single-photon pulse.

[1] K. Koshino, Phys. Rev. A 73, 053814 (2006).

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