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arXiv · 2512.20367

Electrical drive of a Josephson junction array using a cryogenic BiCMOS pulse generator

Yerzhan Kudabay·Oliver Kieler·Michael Starkloff·Marco Schubert·Michael Haas·Johannes Kohlmann·Vadim Issakov·Mark Bieler
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Abstract

We have combined a cryogenic BiCMOS integrated circuit with a superconducting Josephson junction array. The BiCMOS circuit serves as an on-chip pulse generator delivering return-to-zero pulses with pulse frequencies of up to 15 GHz. With this microwave drive, we observe wide and flat Shapiro steps in the voltage-versus-current characteristics of the Josephson junction array. To the best of our knowledge, this is the first integration of a Josephson junction array with a cryogenic BiCMOS chip. Our results pave the way to a hybrid and fully integrated Josephson arbitrary waveform synthesizer with possible applications in quantum electronics and quantum voltage metrology.

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Yerzhan Kudabay, Oliver Kieler, Michael Starkloff, Marco Schubert, Michael Haas, Johannes Kohlmann, Vadim Issakov, Mark Bieler. 2026-09-16. Electrical drive of a Josephson junction array using a cryogenic BiCMOS pulse generator. https://arxiv.org/abs/2512.20367

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