Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 55: Poster VI
Q 55.30: Poster
Donnerstag, 14. März 2024, 17:00–19:00, Tent B
Ultrafast single-photon detection at high repetition rates based on optical Kerr gates under focusing — •Amr Farrag1, Abdul-Hamid Fattah1, Assegid Mengistu Flatae1, and Mario Agio1,2 — 1Laboratory of Nano-Optics and Cµ, University of Siegen, 57072 Siegen, Germany — 2National Institute of Optics (INO), National Research Council (CNR), 50125 Florence, Italy
The ultrafast detection of single photons’ emitters is currently bound by the limited time resolution (a few picoseconds) of the available single-photon detectors. Optical Kerr gates can offer a faster time resolution, but until now they have been applied to ensembles of emitters. Here, we demonstrate through a semi-analytical model that the ultrafast time-resolved detection of single quantum emitters can be possible using an optical Kerr shutter at GHz rates under focused illumination. This technique provides sub-picosecond time resolution, while keeping a gate efficiency at around 85%.