Quantum Nanostructures and
Nanofabrication Group

Prof. Karl K. Berggren and Dr. P. Donald Keathley

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New Publication: Photolithography-compatible three-terminal superconducting switch for driving CMOS loads

Oct 27, 2025 | Our Research

A new paper written by the group was recently published in Physical Review Applied. Dip Joti Paul, Tony X. Zhou, Karl K. Berggren, “Photolithography-compatible three-terminal superconducting switch for driving CMOS loads,” Physical Review Applied, 24, 2, p. 024060,...

New Publication: Determination of mid-infrared refractive indices of superconducting thin films using Fourier transform infrared spectroscopy

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...

Congrats to John Simonaitis and Owen Medeiros on their successful Theses Defenses!

Jul 1, 2025 | News Articles, Our Research

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,...

New Publication: Bandwidth of Lightwave-Driven Electronic Response from Metallic Nanoantennas

Jun 3, 2025 | Our Research

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

May 13, 2025 | News Articles, Our Research

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....

New Publication: Lightwave Electronic Harmonic Frequency Mixing

Sep 9, 2024 | News Articles, Our Research

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...

Thesis Defense Recording – Dr. Marco Colengelo: Superconducting Nanowire Technology For Microwave and Photonics Applications

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...
New Publication: “Large-Area Superconducting Nanowire Single-Photon Detectors for Operation at Wavelengths up to 7.4 μm”

New Publication: “Large-Area Superconducting Nanowire Single-Photon Detectors for Operation at Wavelengths up to 7.4 μm”

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...
Marco Turchetti awarded Best Invited Poster at EIPBN

Marco Turchetti awarded Best Invited Poster at EIPBN

Jun 21, 2017 | News Articles, Uncategorized

Congratulations to Marco Turchetti for being awarded Best Invited Poster at this year’s EIPBN conference in Orlando, FL. Details regarding his poster abstract may be found below: Aberration-Corrected Quantum Electron Microscopy Marco Turchetti, Chung-Soo Kim,...
New publication: “A nanofabricated, monolithic, path-separated electron interferometer”

New publication: “A nanofabricated, monolithic, path-separated electron interferometer”

May 23, 2017 | News Articles, Uncategorized

We describe a modular, self-aligned, amplitude-division electron interferometer in a conventional transmission electron microscope. The interferometer consists of two 45-nm-thick silicon layers separated by 20 μm. This interferometer is fabricated from a...
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Recent Posts

  • New Publication: Photolithography-compatible three-terminal superconducting switch for driving CMOS loads
  • Community Outreach Event: Appalachian Optics Outreach Event 2025
  • New Publication: Determination of mid-infrared refractive indices of superconducting thin films using Fourier transform infrared spectroscopy
  • Joey Alongi, Reed Foster, and DJ Paul awarded fellowships
  • QNN Summer 2025 Newsletter

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