Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 13: Posters: Quantum Optics and Photonics I
Q 13.32: Poster
Monday, March 9, 2020, 16:30–18:30, Empore Lichthof
Towards a setup for HBT measurements using small telescopes — •Sebastian Karl1, Stefan Richter1,2, and Joachim von Zanthier1,2 — 1Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany — 2Erlangen Graduate School in Advanced Optical Technologies (SAOT), Universität Erlangen-Nürnberg, 91052 Erlangen, Germany
The ability to measure temporal intensity correlation functions with high SNR and predictable contrast can be regarded as the first step towards spatial Hanbury Brown Twiss (HBT) intensity interferometry [1]. Recently such measurements have been performed using the light of arc lamps [2] and of real stars using large optical [3, 4] and Cherenkov [5] telescopes. We present a setup and laboratory test results of temporal intensity correlation measurements with sub 100 ps resolution using a Xenon arc lamp. Our measurement results fit our theory and simulations [6] extremely well. In the light of recent HBT revival experiments [3, 4, 5] we discuss a setup to measure temporal intensity correlations utilizing small telescopes of 0.5 m diameter and high timing resolution.
[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] W. Guerin et al., MNRAS 480, 245 (2018) [5] N. Matthews et al., arXiv 1908.03587 (2019) [6] R. Schneider et al., Appl. Opt. 57, 7076 (2018).