Experimentally verified, fast analytic and numerical design of superconducting resonators in flip-chip architectures
| Autor: | Li, Hang-Xi, Shiri, Daryoush, Kosen, Sandoko, Rommel, Marcus, Chayanun, Lert, Nylander, Andreas, Rehammar, Robert, Tancredi, Giovanna, Caputo, Marco, Grigoras, Kestutis, Grönberg, Leif, Govenius, Joonas, Bylander, Jonas |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | IEEE Transactions on Quantum Engineering, vol. 4, pp. 1-12, 2023, Art no. 3101312 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1109/tqe.2023.3302371 |
| Popis: | 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. Comment: Accepted version. 13 pages, 12 figures |
| Databáze: | arXiv |
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