Multimode Operation of a Superconducting Nanowire Switch in the Nanosecond Regime
Superconducting circuits are promising candidates for future computational architectures; however, practical applications require fast operation. Here, we demonstrate fast, gate-based switching of an Al nanowire-based superconducting switch in time-domain experiments. We apply voltage pulses to the gate while monitoring the microwave transmission of the device. Utilizing the usual leakage-based operation, these measurements yield a fast, 1-2 ns switching time to the normal state, possibly limited by the bandwidth of our setup, and a 15-20 ns delay in the normal to superconducting transition. However, having a significant capacitance between the gate and the device allows for a different operation, where the displacement current, induced by the fast gate pulses, drives the transition. The switching from superconducting to the normal state yields a similar fast time scale, while in the opposite direction the switching is significantly faster (4-6 ns) than the leakage-based operation, which may be further improved by a better thermal design. The measured short time scales and the displacement current-based switching operation will be important for future fast and low-power-consumption applications.
Authors
- Karl K. Berggren (ORCID: https://orcid.org/0000-0001-7453-9031)
- Martin Berke (ORCID: https://orcid.org/0009-0009-0310-129X)
- Péter Makk (ORCID: https://orcid.org/0000-0001-7637-4672)
- Mátyás Kocsis (ORCID: https://orcid.org/0009-0000-9613-6540)
- Jesper Nygård (ORCID: https://orcid.org/0000-0002-4639-5314)
- Gergő Fülöp (ORCID: https://orcid.org/0000-0003-3736-9488)
- Zoltán Scherübl (ORCID: https://orcid.org/0000-0003-4075-589X)
- Tosson Elalaily (ORCID: https://orcid.org/0000-0003-3595-4798)
- Thomas Kanne (ORCID: https://orcid.org/0000-0002-1533-2783)
- Szabolcs Csonka (ORCID: https://orcid.org/0000-0003-0505-2806)
- Lőrinc Kupás
Institutions
- University of Copenhagen (DK)
- Budapest University of Technology and Economics (HU)
- B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine (UA)
- Montavid Thermodynamic Research Group (HU)
- Włodzimierz Trzebiatowski Institute of Low Temperature and Structure Research (PL)
- HUN-REN Centre for Energy Research (HU)
- Massachusetts Institute of Technology (US)
- Aalto University (FI)
Publication Details
- Journal
- ACS Nano
- Published
- 2025-08-04
- DOI
- https://doi.org/10.1021/acsnano.5c03718
- Citations
- 2
- Primary Topic
- Physics of Superconductivity and Magnetism
- Type
- article
- Field-Weighted Citation Impact
- 2.52
Funders
- European Cooperation in Science and Technology
- National Research Foundation
- Danmarks Grundforskningsfond
- Carlsbergfondet
- Hungarian Scientific Research Fund
- Magyar Tudományos Akadémia
- Novo Nordisk
- Novo Nordisk Fonden
- Horizon 2020 Framework Programme
- Nemzeti Kutatási, Fejlesztési és Innovaciós Alap
- National Research, Development and Innovation Office
- H2020 European Research Council