High-frequency measurements at low temperatures typically require connecting external sources to the device using bulky, lossy, and expensive RF cables. To address this issue, the authors present on-chip Josephson junction arrays that generate GHz-range microwaves with a tuneable frequency controlled by a DC bias voltage. This offers a compact, efficient alternative for high-frequency applications.
- Senne Vervoort
- Lukas Nulens
- Joris Van de Vondel