Aug 1, 2025 | Our Research
A new publication written by the group on was recently published in Applied Physics Letters. Dip Joti Paul, Tony X. Zhou, and Karl K. Berggren, “Determination of mid-infrared refractive indices of superconducting thin films using Fourier transform infrared...
Aug 19, 2024 | News Articles, Our Research
New publication: Matteo Castellani, Owen Medeiros, Reed Foster, Alessandro Buzzi, Marco Colangelo, Joshua C. Bienfang, Alessandro Restelli, and Karl K. Berggren. “Nanocryotron ripple counter integrated with a superconducting nanowire single-photon detector for...
May 24, 2024 | News Articles, Our Research
Full article citation: I. Charaev et al., “Single-photon detection using large-scale high-temperature MgB2 sensors at 20 K,” Nat Commun, vol. 15, no. 1, p. 3973, May 2024. The article is Open Access and can be viewed here. Abstract Ultra-fast single-photon detectors...
Mar 25, 2024 | News Articles, Our Research
Prof. Karl Berggren gave a presentation on Integerated Electronics for Superconducting-nanowire Single-photon Detector Readouts at the SPIE Quantum West conference this January. The recording of this presentation is now available in the SPIE Digital Library. To access...
Jun 23, 2023 | News Articles, Our Research
Now-Dr. Marco Colangelo’s thesis defense is now available to view online. The title is “Superconducting Nanowire Technology For Microwave and Photonics Applications.” Congratulations for Dr. Colangelo for his successful PhD defense! Abstract: Quantum computing...
Jul 19, 2022 | News Articles
The optimization of superconducting thin-films has pushed the sensitivity of superconducting nanowire single-photon detectors (SNSPDs) to the mid-infrared (mid-IR). Earlier demonstrations have shown that straight tungsten silicide nanowires can achieve unity internal...
Feb 2, 2021 | News Articles
We present a comprehensive study of molybdenum nitride (MoN) thin film deposition using direct current reactive magnetron sputtering. We have investigated the effect of various deposition conditions on the superconducting and electrical properties of the films....
Apr 14, 2017 | News Articles
We demonstrate a scalable single-photon imager using a single continuous superconducting nanowire that is not only a single-photon detector but also functions as an efficient microwave delay line. In this context, photon-detection pulses are guided in the nanowire and...
Nov 19, 2015 | News Articles
This paper describes the construction of a cryostat and an optical system with a free-space coupling efficiency of 56.5% +/- 3.4% to a superconducting nanowire single-photon detector (SNSPD) for infrared quantum communication and spectrum analysis. A 1K pot decreases...
Oct 20, 2014 | News Articles
Congrats to Andrew Dane, Graduate Research Assistant in the QNN group, was awarded a NASA Space Technology Research Fellowship, class of 2014. His research topic is “Superconducting Nanowire Single Photon Detectors for High-Data-Rate Deep-Space Optical...