Time Binning Method for Nonpulsed Sources Characterization With a Superconducting Photon Number Resolving Detector
Year: 2023
Authors: Ercolano P., Bruscino C., Salvoni D., Zhang C.J., Ejrnaes M., Huang J., Li H., You L.X., Parlato L., Pepe G.P.
Autors Affiliation: Univ Napoli Feder II, Dipartimento Fis E Pancini, I-80125 Naples, Italy; CNR, INO Natl Inst Opt, I-50125 Florence, Italy; Photon Technol Zhejiang Co Ltd, Jiashan 314100, Peoples R China; CNR, SPIN Inst Supercond Innovat Mat & Devices, I-80078 Pozzuoli, Italy; Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Natl Key Lab Mat Integrated Circuits, Shanghai 200050, Peoples R China; CNR, SPIN Inst Supercond Innovat Mat & Devices, I-80078 Naples, Italy.
Abstract: Photon number resolving detectors find space in many fields, such as quantum optics, boson sampling, and fluorescence spectroscopy. In particular, the reconstruction of the input photon distribution is essential in quantum communications to detect photon-number-splitting attacks. In this work, we discuss the operation configurations of a photon number resolving detector based on superconducting nanostrips at a wavelength of 1550 nm from a temporal point of view. We set a time binning and acquired the number of recorded pulses per bin by means of a time-to-digital converter. We studied the predictions of two theoretical models and compared them to the experimental data in order to analyze their operation regimes depending on the binwidth and to employ them for the reconstruction of the input photon distribution. We applied this method to a continuous-wave laser source, showing that the former can be used for the characterization of nonpulsed light sources, even with a photon emission rate so low that the dark count rate of a superconducting nanostrip is not negligible.
Journal/Review: IEEE TRANSACTIONS ON QUANTUM ENGINEERING
Volume: 4 Pages from: 4100609-1 to: 4100609-9
More Information: This work was supported in part by the European Union- PON Ricerca e Innovazione 2014-2020 FESR/FSC- Project ARS01_00734 QUANCOM2.KeyWords: Photonics; Detectors; Superconducting photodetectors; Recording; High-temperature superconductors; Light sources; Superconducting integrated circuits; photodetectors; photon number resolving detectors (PNRDs); superconducting devices; superconducting photodetectorsDOI: 10.1109/TQE.2023.3316797Citations: 4data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2025-01-12References taken from IsiWeb of Knowledge: (subscribers only)