Experimentally verified, fast analytic and numerical design of
superconducting resonators in flip-chip architectures
- URL: http://arxiv.org/abs/2305.05502v3
- Date: Wed, 30 Aug 2023 12:53:38 GMT
- Title: Experimentally verified, fast analytic and numerical design of
superconducting resonators in flip-chip architectures
- Authors: Hang-Xi Li, Daryoush Shiri, Sandoko Kosen, Marcus Rommel, Lert
Chayanun, Andreas Nylander, Robert Rehammar, Giovanna Tancredi, Marco Caputo,
Kestutis Grigoras, Leif Gr\"onberg, Joonas Govenius, Jonas Bylander
- Abstract summary: predictability of device parameters is of increasing importance in superconducting quantum processors.
We present a method, based on conformal mapping techniques, to predict a resonator's parameters directly from its 2D cross-section.
We demonstrate the method's validity by comparing the calculated resonator frequency and coupling quality factor with those obtained through 3D finite-element-method simulation.
- Score: 0.0
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- Abstract: In superconducting quantum processors, the predictability of device
parameters is of increasing importance as many labs scale up their systems to
larger sizes in a 3D-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 2D
cross-section, without computationally heavy and time-consuming 3D simulation.
We demonstrate the method's validity by comparing the calculated resonator
frequency and coupling quality factor with those obtained through 3D
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 inter-chip spacing.
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