The frontier of information processing lies in nanoscience and nanotechnology research. At the nanoscale, materials, and structures can be engineered to exhibit interesting new properties, some based on quantum mechanical effects. Our research focuses on developing nanofabrication technology at the few-nanometer length scale. We use these technologies to push the envelope of what is possible with photonic and electrical devices, focusing in particular on superconductive and free-electron devices. Our research combines electrical engineering, physics, and materials science and helps extend the limits of nanoscale engineering.
The nanocryotron: A superconducting-nanowire three-terminal electrothermal device
Recent QNN News
New Publication: Lightwave Electronic Harmonic Frequency Mixing
New publication: Matthew Yeung, Lu-Ting Chou, Marco Turchetti, Felix Ritzkowsky, Karl K. Berggren, and Philip D. Keathley, “Lightwave Electronic Harmonic Frequency Mixing,” Science Advances, 10, 33, (2024) Image credit to Sampson Wilcox. Abstract Electronic frequency...
New Publication Featured: Nanocryotron ripple counter integrated with a superconducting nanowire single-photon detector for megapixel arrays
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...
New Publication: Effects of Helium Ion Exposure on the Single-Photon Sensitivity of MgB₂ and NbN Detectors
New publication: Emma Batson, Francesca Incalza, Matteo Castellani, Marco Colangelo, Ilya Charaev, Andreas Schilling, Sergey Cherednichenko, and Karl K. Berggren. "Effects of Helium Ion Exposure on the Single-Photon Sensitivity of MgB₂ and NbN Detectors," IEEE...
New Publication: Single-photon detection using large-scale high-temperature MgB2 sensors at 20 K
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...
Prof. Berggren SPIE Presentation Available
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...