Dr. Marc J. Feldman

Marc J. Feldman, Ph.D. is Senior Scientist and Professor of Electrical and Computer Engineering at the University of Rochester. He was coinventor of the Josephson array voltage standard, which now defines the standard “VOLT” and was inventor of the four-photon Josephson parametric amplifier. He was instrumental in the development of the “SIS” mixer now widely used for radio astronomy. He and Mark Bocko started the field of superconducting quantum computation, with a white paper written in 1995.
 
His research has been on ultra-high frequency/high speed circuits and devices; in particular based on superconductivity. His emphasis has been on practical applications — things that work outside the laboratory — and in fact his past contributions have been essential to many of the applications of superconducting electronics.
 
Marc’s laboratory, the Center for Superconducting Digital Electronics, has developed digital LSI circuitry built from superconductors rather than semiconductors — computational and signal processing circuits which aim to operate 100x faster with 1000x less power than CMOS. To make these circuits work correctly requires research on every aspect of digital circuit design, from software generation, timing analysis, simulation, and lay-out, through fabrication and testing.
 
He concentrates on applications to solid-state quantum computing, for which low temperatures are essential. His ultimate objective is to build a quantum computer on-a-chip, interfaced with superconducting LSI circuitry. He is working toward this goal together with other universities and with lots of interaction with the large quantum information community at Rochester.
 
Marc coauthored Delayed pulses from high-transparency Josephson junctions, Dielectrophoretic Liquid Actuation and Nanodroplet Formation, A Technique for Noise Measurements of SIS Receivers, Quantum noise in the quantum theory of mixing, Gain-Dependent Noise Temperature of Josephson Parametric Amplifiers, Timing of Multi-Gigahertz Rapid Single Flux Quantum Digital Circuits, and An Inverse AC Josephson Effect Voltage Standard. Read the full list of his publications.
 
Marc earned a B.A. and a M.S. in Physics from the University of Pennsylvania in 1967 and a PhD in physics from the University of California at Berkeley in 1975, working with professors Ray Chiao and Charlie Townes. He worked at Chalmers University, Sweden, with Tord Claeson and at the NASA/Goddard Institute for Space Studies, New York City, with Tony Kerr.