K
Kyle Sundqvist
Researcher at Texas A&M University
Publications - 8
Citations - 269
Kyle Sundqvist is an academic researcher from Texas A&M University. The author has contributed to research in topics: Parametric oscillator & Cryogenic Dark Matter Search. The author has an hindex of 7, co-authored 8 publications receiving 230 citations.
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Journal ArticleDOI
Strong environmental coupling in a Josephson parametric amplifier
Josh Mutus,Ted White,Rami Barends,Yu Chen,Zijun Chen,Benjamin Chiaro,Andrew Dunsworth,Evan Jeffrey,Julian Kelly,A. Megrant,Charles Neill,Peter O'Malley,Pedram Roushan,Daniel Sank,Amit Vainsencher,James Wenner,Kyle Sundqvist,Andrew Cleland,John M. Martinis +18 more
TL;DR: In this paper, a lumped-element Josephson parametric amplifier with strong coupling to the environment is presented, which allows for frequency dependent variation of the external impedance at a given frequency.
Journal ArticleDOI
Negative-resistance models for parametrically flux-pumped superconducting quantum interference devices
Kyle Sundqvist,Per Delsing +1 more
TL;DR: In this paper, the authors developed linearized models to describe the parametrically flux-pumped SQUID in terms of an impedance, which can be seen as a result of a negative resistance of the pumpistor.
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The pumpistor: A linearized model of a flux-pumped superconducting quantum interference device for use as a negative-resistance parametric amplifier
Kyle Sundqvist,Seckin Kintas,Michael Roger Andre Simoen,Philip Krantz,Martin Sandberg,Christopher Wilson,Per Delsing +6 more
TL;DR: In this article, a circuit model for a flux-driven Superconducting QUantum Interference Device (SQUID) is described, which is useful for developing insight into how these devices perform as active elements in parametric amplifiers.
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The pumpistor: a linearized model of a ux-pumped SQUID for use as a negative-resistance parametric amplier
TL;DR: In this article, the authors describe a circuit model for a flux-driven SQUID, which is useful for developing insight into how these devices perform as active elements in parametric amplifiers.
Journal ArticleDOI
Observation of Impact Ionization of Shallow States in Sub-Kelvin, High-Purity Germanium
TL;DR: In this article, an optical fiber is used to generate packets of charge carriers near one surface of the detector and the resulting charge carriers drift to the opposite surface by application of an electric field.