Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 22: Quantum Optics I

Q 22.1: Talk

Monday, March 11, 2019, 16:15–16:30, S Gr. HS Maschb.

Experiments on photon bunching of a LED — •Andreas Zmija, Peter Deiml, Stefan Funk, Gisela Anton, Adrian Zink, Dmitry Malyshev, and Thilo Michel — Friedrich-Alexander-Universität Erlangen-Nürnberg, ECAP

We built a Hanbury Brown-Twiss like intensity interferometer used for detecting photon correlations on the order of sub-nanoseconds by time tagging the arrival times of photons in two photomultipliers. The wavelength filtered light from a green LED is used as thermal light source to evaluate a bunching signal in the temporal second-order correlation function. The experimental setup will be shown and setup-specific artefacts and disturbances will be discussed. Furthermore, results of a 60 hour intensity interferometry measurement of the LED-light are presented which show a clear photon bunching signature. Moreover, a quantitive analysis of the bunching peak, in particular of the time evolution of its significance, is given and the stability of measurement systematics is discussed.