Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 39: Poster V
Q 39.3: Poster
Mittwoch, 13. März 2024, 17:00–19:00, Aula Foyer
Ultra high throughput single photon detection — •Sebastian Karl1, Verena Leopold1,2, Stefan Richter1,2, Yury Prokazov2, Evgeny Turbin2, Gennady Sintotskiy2, Dimitry Orl3, and Joachim von Zanthier1 — 1Quantum Optics and Quantum Information, FAU Erlangen Nürnberg, Germany — 2Photonscore GmbH, Magdeburg, Germany — 3Photonis Netherlands BV, Roden, Netherlands
Although recently there has been a tremendous push towards detectors with near unity quantum efficiencies and high timing resolution [1], the dead time of most single photon detection systems remains on the order of 30 ns. Avoiding unwanted pile-up effects this dead time limits the photon detection rate to less than 15 MHz.
We present tests of a novel single photon counting system able to detect single photons at rates exceeding 100 MHz on one single point detector. Photon detection is achieved using a multichannel-plate and a 8 mm diameter Photonis Hi-QE photocathode, reaching quantum efficiencies above 30%. A custom time to digital converter (TDC), Photonscore LINTag, is used to digitise the photon arrival times. It allows the data transfer of event rates exceeding 400 MHz per TDC via standard 10G ethernet fibre cables. At sustained photon detection rates of 100 MHz we measure a jitter of < 70 ps FWHM. Using a spinning disk optical chopper we show reliable single photon detection and timing at instantaneous rates exceeding 500 MHz.
[1] I. E. Zadeh et al., Appl. Phys Lett. 188, 190502 (2021)
Keywords: single photon detection; time to digital converter; high precision electronics; high throughput