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
QNN Summer 2025 Newsletter
Dear QNN Group Members, Alums and Affiliates, Happy summer everyone! We have had lots of news and comings and goings. First of all, Karl has now been in his role as EE Faculty Head for a few months and is getting used to it, finding more time to interact with the...
Karl K. Berggren selected as the Julius A. Stratton Professor in Electrical Engineering and Physics
Congratulations to Karl! He has been selected as the Julius A. Stratton Professor in Electrical Engineering and Physics for a five-year renewable term beginning July 1, 2025. This chair was established in the late 1970s by William R. Hewlett, a founder of the...
Congrats to John Simonaitis and Owen Medeiros on their successful Theses Defenses!
In May 2025, we congratulates Drs. John Simonaitis and Dr. Owen Medeiros on their thesis defenses! Owen Medeiros successfully defended his PhD thesis entitled "Superconducting Nanowire Integrated Circuits for Scalable Cryogenic Memory" on May 13, 2025. The talk...
New Publication: Bandwidth of Lightwave-Driven Electronic Response from Metallic Nanoantennas
A new publication written by the group was just published in Nano Letters. Matthew Yeung, Lu-Ting Chou, Felix Ritzkowsky, Marco Turchetti, Karl K. Berggren, Shih-Hsuan Chih, Philip D. Keathley, “: Bandwidth of Lightwave-Driven Electronic Response from Metallic...
New Publication: A superconducting full-wave bridge rectifier
A new publication written by the group on a superconducting diode was just published in Nature Electronics. Matteo Castellani, Owen Medeiros, Alessandro Buzzi, Reed A. Foster, Marco Colangelo and Karl K. Berggren.M. Castellani, O. Medeiros, A. Buzzi, R. A. Foster, M....