Papers › Modeling flux-quantizing Josephson junction circuits in Keysight ADS

Modeling flux-quantizing Josephson junction circuits in Keysight ADS

15 Aug 2024arXiv:2408.07861links table onlyarchive 2025-07-28

Ofer Naaman, Ted White, Mohamed Awida Hassan, Derek Slater, Sean Mcilvane, Edwin Yeung, Philip Krantz

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We introduce Josephson junction and inductor models in Keysight ADS that feature an auxiliary flux port, and facilitate the expression of flux quantization conditions in simulation of superconducting microwave circuits. We present several examples that illustrate our methodology for constructing flux-quantizing circuits, including dc- and rf-SQUIDs, tunable couplers, and parametric amplifiers using SNAIL and rf-SQUID arrays. We perform DC, S-parameter, and harmonic balance simulations to validate our models and methods against theory and published experimental results.

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