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arXiv · 2006.04130

Engineering Framework for Optimizing Superconducting Qubit Designs

Fei Yan·Youngkyu Sung·Philip Krantz·Archana Kamal·David K. Kim·Jonilyn L. Yoder·Terry P. Orlando·Simon Gustavsson·William D. Oliver
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Abstract

Superconducting quantum technologies require qubit systems whose properties meet several often conflicting requirements, such as long coherence times and high anharmonicity. Here, we provide an engineering framework based on a generalized superconducting qubit model in the flux regime, which abstracts multiple circuit design parameters and thereby supports design optimization across multiple qubit properties. We experimentally investigate a special parameter regime which has both high anharmonicity ($\sim\!1$GHz) and long quantum coherence times ($T_1\!=\!40\!-\!80\,\mathrm{\mu s}$ and $T_\mathrm{2Echo}\!=\!2T_1$).

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Fei Yan, Youngkyu Sung, Philip Krantz, Archana Kamal, David K. Kim, Jonilyn L. Yoder, Terry P. Orlando, Simon Gustavsson, William D. Oliver. 2020-06-07. Engineering Framework for Optimizing Superconducting Qubit Designs. https://arxiv.org/abs/2006.04130

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