Dortmund 2021 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 12: Search for New Particles I
T 12.5: Vortrag
Montag, 15. März 2021, 17:05–17:20, Tl
Single-Photon Detector Development at DESY — •Katharina-S. Isleif1, Rikhav Shah2, Friederike Januschek1, Axel Lindner1, Hartmut Grote3, Dmitry Morozov4, and Robert Hadfield4 — 1Deutsches Elektronen-Synchrotron — 2Johannes Gutenberg Universität Mainz — 3Cardiff University — 4James Watt School of Engineering, University of Glasgow
In recent years, single-photon detector technologies have been continuously developed and improved. The advancement of photon-counting technologies has significantly contributed to scientific progress and enabled real-world quantum technology applications such as quantum key distribution. The performance of a single-photon detector can be quantified in terms of spectral range, dead time, dark count rate and detection efficiency, among others. The ALPS II axion-detection experiment, which is currently under construction at DESY in Hamburg, utilizes many of these properties, which we will highlight in this talk. We will demonstrate how single-photon detectors are characterized, what the current limitations of today’s detectors are and we will give an outlook on the approaches we will study to undercut the given limitations to realize single-photon detectors with a rate of 10−5 counts per second and a detection efficiency of over 80% for 1064 nm photons. The goal is to eliminate spurious events at energies of 1.17 eV to below 1 event per day when the detector is connected to an experiment via optical fiber. Possible new detector structures will be addressed, such as a cryogenic dual on-chip transition edge sensor, and discuss low-noise optical interfaces and in-situ low-temperature optical filters.