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Experimentally Verified, Fast Analytic, and Numerical Design of Superconducting Resonators in Flip-Chip Architectures

Li, Hangxi, 1994 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Shiri, Daryoush, 1975 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Kosen, Sandoko, 1991 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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Rommel, Marcus, 1987 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Chayanun, Lert, 1990 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Nylander, Andreas, 1988 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Rehammar, Robert, 1980 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Tancredi, Giovanna, 1981 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Caputo, Marco (author)
Teknologian Tutkimuskeskus (VTT),Technical Research Centre of Finland (VTT)
Grigoras, Kestutis (author)
Teknologian Tutkimuskeskus (VTT),Technical Research Centre of Finland (VTT)
Gronberg, Leif (author)
Teknologian Tutkimuskeskus (VTT),Technical Research Centre of Finland (VTT)
Govenius, Joonas (author)
Teknologian Tutkimuskeskus (VTT),Technical Research Centre of Finland (VTT)
Bylander, Jonas, 1978 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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 (creator_code:org_t)
2023
2023
English.
In: IEEE Transactions on Quantum Engineering. ; 4
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • In superconducting quantum processors, the predictability of device parameters is of increasing importance as many laboratories scale up their systems to larger sizes in a 3-D-integrated architecture. In particular, the properties of superconducting resonators must be controlled well to ensure high-fidelity multiplexed readout of qubits. Here, we present a method, based on conformal mapping techniques, to predict a resonator's parameters directly from its 2-D cross-section, without computationally heavy and time-consuming 3-D simulation. We demonstrate the method's validity by comparing the calculated resonator frequency and coupling quality factor with those obtained through 3-D finite-element-method simulation and by measurement of 15 resonators in a flip-chip-integrated architecture. We achieve a discrepancy of less than 2% between designed and measured frequencies for 6-GHz resonators. We also propose a design method that reduces the sensitivity of the resonant frequency to variations in the interchip spacing.

Subject headings

NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Keyword

Resonators
Finite element analysis
coplanar waveguide
Superconducting magnets
Frequency measurement
penetration depth
flip chip
Coplanar waveguides
Flip-chip devices
Qubit
superconducting resonator
kinetic inductance
quantum processor
Conformal mapping

Publication and Content Type

art (subject category)
ref (subject category)

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