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Reflection-enhanced...
Reflection-enhanced gain in traveling-wave parametric amplifiers
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- Kern, S. (author)
- Univerzita Komenskeho v Bratislave,Comenius University in Bratislava
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- Neilinger, P. (author)
- Univerzita Komenskeho v Bratislave,Comenius University in Bratislava,Slovak Academy of Sciences
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- Il'Ichev, E. (author)
- Leibniz-Institut Für Photonische Technologien E.V.
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- Sultanov, A. (author)
- Aalto-Yliopisto,Aalto University
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- Schmelz, M. (author)
- Leibniz-Institut Für Photonische Technologien E.V.
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- Linzen, S. (author)
- Leibniz-Institut Für Photonische Technologien E.V.
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- Kunert, J. (author)
- Leibniz-Institut Für Photonische Technologien E.V.
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- Oelsner, G. (author)
- Leibniz-Institut Für Photonische Technologien E.V.
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- Stolz, R. (author)
- Leibniz-Institut Für Photonische Technologien E.V.
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- Danilov, Andrey, 1961 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Mahashabde, Sumedh, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jayaraman, Aditya, 1993 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Antonov, V. (author)
- Royal Holloway University of London
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- Kubatkin, Sergey, 1959 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Grajcar, M. (author)
- Slovak Academy of Sciences,Univerzita Komenskeho v Bratislave,Comenius University in Bratislava
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Physical Review B. - 2469-9969 .- 2469-9950. ; 107:17
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https://research.cha...
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https://doi.org/10.1...
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Abstract
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- The operating principle of traveling-wave parametric amplifiers is typically understood in terms of the standard coupled mode theory, which describes the evolution of forward propagating waves without any reflections, i.e., for perfect impedance matching. However, in practice, superconducting microwave amplifiers are unmatched nonlinear finite-length devices, where the reflecting waves undergo complex parametric processes, not described by the standard coupled mode theory. Here, we present an analytical solution for the TWPA gain, which includes the interaction of reflected waves. These reflections result in corrections to the well-known results of the standard coupled mode theory, which are obtained for both three-wave and four-wave mixing processes. Due to these reflections, the gain is enhanced and unwanted nonlinear phase modulations are suppressed. Predictions of the model are experimentally demonstrated on two types of unmatched TWPA, based on coplanar waveguides with a central wire consisting of (i) a high kinetic inductance superconductor, and (ii) an array of 2000 Josephson junctions.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Kern, S.
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Neilinger, P.
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Il'Ichev, E.
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Sultanov, A.
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Schmelz, M.
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Linzen, S.
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show more...
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Kunert, J.
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Oelsner, G.
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Stolz, R.
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Danilov, Andrey, ...
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Mahashabde, Sume ...
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Jayaraman, Adity ...
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Antonov, V.
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Kubatkin, Sergey ...
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Grajcar, M.
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
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and Telecommunicatio ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Physical Review ...
- By the university
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Chalmers University of Technology