Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 6: Quantum Effects: Light Scattering and Propagation
Q 6.7: Vortrag
Montag, 14. März 2011, 12:15–12:30, SCH A01
Collective multi-mode effects in quantum optics — •Bojan Skerlak1,2, Matthias Liertzer3, Stefan Rotter3, and Hakan Türeci1,2 — 1Department of Electrical Engineering, Princeton University, USA — 2Institute for Quantum Electronics, ETH Zürich, Switzerland — 3Institute for Theoretical Physics, TU Vienna, Austria
Controlling the photon emission of quantum systems is at the heart of a number of fields ranging from quantum information processing to single-molecule spectroscopy. A way to tune the spontaneous emission rate and directionality of a quantum emitter is to place it in a suitably designed photonic structure. Much of the earlier work has focused here on the resonant coupling of the emitter to a single, carefully chosen mode of this photonic structure with favorable emission properties, while the coupling to the rest of the modes of the photonic environment is regarded as a parasitic influence. This approach results in stringent requirements on the spectral and spatial overlap of the emitter and the resonant mode in question. Here we investigate the opposite approach: coupling an emitter to a large number of modes of a cavity. In particular, we show how this multi-mode coupling can be engineered to lead via interference to a robust collective enhancement of directionality which is more pronounced than that of each mode.