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Home > News & Publications > Events > EDISON LECTURE: The Circuit Paradigm Bridging Nano-Engineering to Physics from Formal Analogies to Circuit-Quantum-Electrodynamics (C-QED)

EDISON LECTURE: The Circuit Paradigm Bridging Nano-Engineering to Physics from Formal Analogies to Circuit-Quantum-Electrodynamics (C-QED)

Start: 10/31/2013 at 3:30PM
End: 10/31/2013 at 4:30PM
Location: DeBartolo Hall, Room 131
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EDISON LECTURE: The Circuit Paradigm Bridging Nano-Engineering to Physics from Formal Analogies to Circuit-Quantum-Electrodynamics (C-QED)


Árpád I. Csurgay
Professor Emeritus
Pázmány Péter Catholic University • Budapest, Hungary
Faculty of Information Technology and Bionics

Recently, the attention of a number of quantum optics groups (among others groups at NIST, CNRS, Universities of Yale, Stanford, Princeton, ETH, Imp. College etc) have  experimentally and theoretically studied the interaction
of atoms or molecules with optical or microwave cavities. This presentation is a tutorial review on the challenge electrical engineers face during the design of integrated systems composed of atoms (or artificial atoms), molecules (or artificial molecules) interacting through exchange of photons. Nano and cryogenic technologies enables engineers to construct artificial atoms and molecules, whose spectrum lies in the THz, microwave or radio frequency range. In this case the “cavity” can be realized by a low loss circuit (L,C, transmission line,  etc.). A new arsenal of integrated circuits (realized on chips) could emerge. Successful demonstrations of super-conducting circuits with Josephson-type artificial atoms connected with cavities or LC and transmission line circuits have been published with different applications in mind, ranging from logic operations with photons to fluorescence tomography. Progress in on-chip quantum simulation with superconducting circuits has also been reported. Neither the traditional circuit paradigm (Kirchhoff, Ohm, Heaviside, et al.), nor the circuit representation of classical electromagnetic field problems (Schwinger et al.) could be applied. The formal mathematical analogy between physics and nonlinear circuits, successfully used for modeling micro- and many nano-electronic circuits does not help either. A new branch of circuit theory, called “Circuit QED” could be applied for the design of these newly emerging integrated circuits.

Csurgay graduated from the Budapest University of Technology (BME) in electrical engineering in 1959. He received a Ph.D. in 1964 at BME in microwave circuit theory, and in 1966-67 he worked as a postdoctoral fellow at the Electrophysics Departmentof the Polytechnic Institute of Brooklyn, New York. In 1973 he received a D.Sc. from the Hungarian Academy of Sciences. Between 1959 and 1980 he was affiliated with the industrial Research Institute for Telecommunication. He served as a microwave circuit designer and later he became chair of the Circuit Theory and CAD Department. Between 1976 and 1979 he served as the director of research at TKI.  In 1980 he joined the Central Research Institute for Physics and the Computer and Automation Research Institute of the Hungarian Academy of Sciences. Between 1985 and 1994 he was elected to serve as the deputy secretary general of the Hungarian Academy of Sciences. Between 1987 and 2006 he was professor at the Department of Electromagnetic Theory of the Budapest University of Technology, and since 2000 he has served as a professor of the Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest. In 1994 he lectured at the Institut für Angewandte Physik, Goethe Universität, Frankfurt am Main, and in 1995 at the Lehrstuhl fur Netzwerktheorie and Schaltungstechnik, Technische Universität München, where he met Professor Wolfgang Porod visitng TUM from Notre Dame. In 1996 he was invited to the University of Notre Dame as a Visiting Melchor Chair Professor at the Electrical Engineering Department for the academic year 1996-97, and since then until 2009, he joined each year the research group of Professor Porod as a part-time visiting professor. Together with Professor Sean O. Scanlan (UCD, Dublin) Csurgay was the co-founding editor of the International Journal of Circuit Theory and Applications, John Wiley, and served as Deputy Editor for 40 years. He is an IEEE Fellow, a member of Academia Europaea, London, and of Academia Scientiarium et Artium Europaea (Salzburg).

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