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arXiv · 2503.10202

Efficient spectrum analysis for multi-junction superconducting circuit

A. Tomonaga·H. Mukai·K. Mizuno·J. S. Tsai
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Abstract

The extraction of transition frequencies from a spectrum has conventionally relied on empirical methods, and particularly in complex systems, it is a time-consuming and cumbersome process. To address this challenge, we establish a semi-automated efficient and precise spectrum analysis method. It first employs image processing methods to extract transition frequencies, subsequently estimating the Hamiltonians of a superconducting quantum circuit containing multiple Josephson junctions. In addition, we determine the suitable range of approximations in simulation methods, evaluating the physical reliability of the analysis.

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A. Tomonaga, H. Mukai, K. Mizuno, J. S. Tsai. 2025-03-13. Efficient spectrum analysis for multi-junction superconducting circuit. https://arxiv.org/abs/2503.10202

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