Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 48: Poster – Quantum Optics, Technologies, and Optomechanics
Q 48.34: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Loss Analysis of a Massively Multiplexed Superconducting Nanowire Photon-Number-Resolving Detector — •Isabell Mischke1, Timon Schapeler1,2, Fabian Schlue2,3, Michael Stefszky2,3, Benjamin Brecht2,3, Christine Silberhorn2,3, and Tim J. Bartley1,2 — 1Department of Physics, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany — 2Institute for Photonic Quantum Systems (PhoQS), Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany — 3Integrated Quantum Optics, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany
Intrinsic photon-number resolution (PNR) has been shown by analyzing the rising edge of superconducting nanowire single-photon detector (SNSPD) electrical signals, which leads to easy accessibility of photon-number resolved measurements. Nevertheless, the overlap of the underlying distributions for different photon numbers limits the number of resolvable photons per SNSPD up to a few photons. Our work scales PNR up to thousands of photons by combining the intrinsic PNR of SNSPDs with temporal and spatial multiplexing. Specifically, we use eight spatial bins with 128 temporal bins each, for a total of 1024 bins. Each bin can resolve up to at least five photons. With detailed data analysis, the losses per bin can be calculated to determine the efficiency of the system and to increase the understanding of its behavior. This knowledge will enable further investigations of the multiplexing system in the future.
Keywords: photon-number resolution; SNSPDs; multiplexing; data analysis