Single-photon detection using large-scale high-temperature MgB2 sensors at 20 K
Artikel i vetenskaplig tidskrift, 2024
Ultra-fast single-photon detectors with high current density and operating temperature can benefit space and ground applications, including quantum optical communication systems, lightweight cryogenics for space crafts, and medical use. Here we demonstrate magnesium diboride (MgB2) thin-film superconducting microwires capable of single-photon detection at 1.55 μm optical wavelength. We used helium ions to alter the properties of MgB2, resulting in microwire-based detectors exhibiting single-photon sensitivity across a broad temperature range of up to 20 K, and detection efficiency saturation for 1 μm wide microwires at 3.7 K. Linearity of detection rate vs incident power was preserved up to at least 100 Mcps. Despite the large active area of up to 400 × 400 μm2, the reset time was found to be as low as ~ 1 ns. Our research provides possibilities for breaking the operating temperature limit and maximum single-pixel count rate, expanding the detector area, and raises inquiries about the fundamental mechanisms of single-photon detection in high-critical-temperature superconductors.
Författare
Ilya Charaev
Massachusetts Institute of Technology (MIT)
Universität Zürich
Emma K. Batson
Massachusetts Institute of Technology (MIT)
Serguei Cherednichenko
Chalmers, Mikroteknologi och nanovetenskap, Terahertz- och millimetervågsteknik
Kate Reidy
Massachusetts Institute of Technology (MIT)
Vladimir Drakinskiy
Chalmers, Mikroteknologi och nanovetenskap, Terahertz- och millimetervågsteknik
Yang Yu
Raith GmbH
Samuel Lara Avila
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Joachim D. Thomsen
Massachusetts Institute of Technology (MIT)
Marco Colangelo
Massachusetts Institute of Technology (MIT)
Northeastern University
Francesca Incalza
Massachusetts Institute of Technology (MIT)
Konstantin Ilin
Karlsruher Institut für Technologie (KIT)
Andreas Schilling
Universität Zürich
Karl K. Berggren
Massachusetts Institute of Technology (MIT)
Nature Communications
2041-1723 (ISSN) 20411723 (eISSN)
Vol. 15 1 3973Fiberintegrerad MgB2 singlefoton detektorer
Vetenskapsrådet (VR) (2019-04345), 2020-01-01 -- 2023-12-31.
Photon counting superconducting detectors for deep space laser communication
Rymdstyrelsen (198/16), 2017-01-01 -- 2019-12-31.
Ämneskategorier
Signalbehandling
Den kondenserade materiens fysik
DOI
10.1038/s41467-024-47353-x
PubMed
38729944