Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 22: Quantum Optics I
Q 22.3: Vortrag
Montag, 11. März 2019, 16:45–17:00, S Gr. HS Maschb.
Hanbury Brown Twiss intensity interferometry with picosecond-resolution — •Sebastian Karl1, Raimund Schneider1,2, Stefan Richter1,2, and Joachim von Zanthier1,2 — 1Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany — 2Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
The ability to measure temporal intensity correlation functions with high contrast can be regarded as the first step towards spatial Hanbury Brown Twiss (HBT) intensity interferometry [1]. Such measurements have been recently performed using the light of arc lamps [2] or real stars [3]. The contrast in these measurements critically depends on the time resolution of the detectors. We present a setup and results for the measurement of temporal intensity correlations with a resolution < 90 picoseconds using a xenon arc lamp. These measurements fit our theory and simulations extremely well [4]. In the light of recent revivals of HBT measurements [3] we discuss a setup to measure temporal intensity correlations of bright stars even on telescopes with a diameter of only 0.5 meters.
[1] R. Hanbury Brown, R. Q. Twiss, Nature 177, 27 (1956). [2] P. K. Tan et al., Astrophysical JL 789, L10 (2014). [3] W. Guerin et al., MNRAS 472, 4126 (2017). [4] R. Schneider et al., Appl. Opt. 57, 7076 (2018).