Quantum Nanostructures and
Nanofabrication Group

Prof. Karl K. Berggren

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 the superconductive devices. Our research combines electrical engineering, physics, and materials science and helps extend the limits of nanoscale engineering.


New publication: “A nanocryotron comparator can connect single-flux-quantum circuits to conventional electronics”
We demonstrate the use of a single three-terminal superconducting-nanowire device, called the nanocryotron (nTron), as a digital comparator to combine SFQ circuits with mature semiconductor circuits such as complementary metal... Read more >>
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New publication: “Photoemission from Plasmonic Nanoparticles”
We demonstrate strong-field, carrier-envelope-phase-sensitive photoemission from arrays of tailored metallic nanoparticles, and we show the influence of the nanoparticle geometry and the plasmon resonance on the phase-sensitive response. Additionally, from... Read more >>
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New publication: “Using Geometry to Sense Current”
We describe a superconducting three-terminal Y-shaped device that uses a simple geometric effect known as current crowding to sense the flow of current and actuate a readout signal. A complete description... Read more >>
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Adam McCaughan awarded 2016 Jin-Au Kong Award for outstanding PhD thesis in EE
Congratulations to Adam McCaughan for being awarded the 2016 Jin-Au Kong Award for outstanding PhD thesis in electrical engineering. Adam's thesis, titled, "Superconducting Thin Film Nanoelectronics," describes his work on... Read more >>
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Professor Berggren awarded the Frank Quick Research Innovation Fellowship
Congratulations to Professor Berggren on being awarded the Frank Quick Research Innovation Fellowship (FRIF). The FRIF was created through the generosity of EECS alumnus Frank Quick '69, SM '70 to... Read more >>
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The nanocryotron: A superconducting-nanowire three-terminal electrothermal device