Solid State Circuits Society

November 20, 2003

Our speaker was Professor Ted Van Duzer (UC Berkeley), and the topic of his presentation was
“Application of Unique Superconductor Quantum Phenomena in Electronics”

Some of the unique macroscopic quantum properties of superconductivity will be reviewed, and their applications in electronics will be explained. These include several well-established applications: detectors for radio astronomy used in most radio telescopes; the volt standard developed by the National Institute for Standards and Technology (NIST); sharp superconducting filters for cellular base stations now deployed in thousands of locations; instrumentation for ultra-weak magnetic fields using the superconducting quantum interference devices (SQUIDs). Other highly developed applications are nearing acceptance, including SQUID magnetocardiography and magnetoencephalography, and high-resolution, high-frequency, analog-to-digital conversion. The status and prospects of single-flux-quantum 50-100 GHz digital integrated circuits for signal processing and computation will be reviewed. Comments will be given on current research directions in superconductor electronics, including quantum computing.
Prof. Van Duzer obtained his formal education at Rutgers University (BS), UCLA (MS) and UC Berkeley (PhD). He is currently a Professor in the Graduate School in the Department of Electrical Engineering and Computer Sciences at Berkeley. He is co-author of two texts: Fields and Waves in Communication Electronics (with S. Ramo and J. R. Whinnery) and Principles of Superconductive Devices and Circuits (with C. W. Turner). He is a Life Fellow of the IEEE, a member of the National Academy of Engineering, and recipient of the Berkeley Citation and the IEEE/CSC Award for Significant and Continuing Contributions to Applied Superconductivity. He has led a research group in superconductive electronics since 1968, including both devices and circuits. They devised novel Josephson junction device configurations and demonstrated both voltage-state and single-flux-quantum digital circuits operating in the high multi-gigahertz range (up to 20 Gb/s). His group has developed the nation’s most versatile superconducting niobium integrated circuit process line. Present research includes novel device and processing techniques and hybrid superconductor/semiconductor systems for memory.

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