CANCELLED Quantum Optics Seminar by Stephan Götzinger – University of Copenhagen

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CANCELLED Quantum Optics Seminar by Stephan Götzinger

Controlling the interaction of light and matter at the level of single quanta

Novel concepts aiming at an efficient processing of information require a strong and controlled coupling of single photons with single atomic quantum systems. In this seminar I will first give an introduction into the efficient generation of single photons using planar dielectric antennas [1, 2]. These antennas serve to direct the emission from an arbitrarily oriented single quantum emitter with >99% efficiency towards a collection optics.

In the second part of the talk I will discuss our efforts towards the realization of quantum networks [3] and present experiments where photons and single solid state emitters strongly interact [4,5]. A single molecule can amplify a weak laser beam and generate nonlinear effects like three-photon amplification and four-wave mixing. 

[1] K. G. Lee, et al., A planar dielectric antenna for directional single-photon emission and near-unity collection efficiency, Nature Phot. 5, 166 (2011).

[2] X.-L. Chu, et al., Experimental realization of an optical antenna designed for collecting 99% of photons from a quantum emitter, Optica 1, 203 (2014).

[3] Y. L. A. Rezus, et al., Single-Photon Spectroscopy of a Single Molecule, Phys. Rev. Lett. 108, 093601 (2012).

[4] J. Hwang, et al., A single-molecule optical transistor, Nature 460, 76-80 (2009).

[5] S. Faez, et al.,Coherent Interaction of Light and Single Molecules in a Dielectric Nanoguide, Phys. Rev. Lett.  113, 213601 (2014).