Experimentally Verified, Fast Analytic, and Numerical Design of Superconducting Resonators in Flip-Chip Architectures
Journal article, 2023
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.
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
Author
Hangxi Li
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Daryoush Shiri
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Sandoko Kosen
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Marcus Rommel
Chalmers, Microtechnology and Nanoscience (MC2), Nanofabrication Laboratory
Lert Chayanun
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Andreas Nylander
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Robert Rehammar
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Giovanna Tancredi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
Marco Caputo
Technical Research Centre of Finland (VTT)
Kestutis Grigoras
Technical Research Centre of Finland (VTT)
Leif Gronberg
Technical Research Centre of Finland (VTT)
Joonas Govenius
Technical Research Centre of Finland (VTT)
Jonas Bylander
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
IEEE Transactions on Quantum Engineering
26891808 (eISSN)
Vol. 4 3101312Open Superconducting Quantum Computers (OpenSuperQPlus)
European Commission (EC) (EC/HE/101113946), 2023-03-01 -- 2026-08-31.
An Open Superconducting Quantum Computer (OpenSuperQ)
European Commission (EC) (EC/H2020/820363), 2018-10-01 -- 2021-09-30.
Driving Forces
Sustainable development
Innovation and entrepreneurship
Areas of Advance
Nanoscience and Nanotechnology
Infrastructure
C3SE (Chalmers Centre for Computational Science and Engineering)
Nanofabrication Laboratory
Subject Categories
Other Physics Topics
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/TQE.2023.3302371