Radio-frequency reflectometry is an important experimental technique that we use to make fast and sensitive measurements of quantum devices. Its applications keep multiplying. Here are two new ones:

• Led by Josh Chawner and the Jon Prance group, we have helped devise a new thermometer: Non-galvanic calibration and operation of a quantum dot thermometer by J. M. A. Chawner, S. Barraud, M. F. Gonzalez-Zalba, S. Holt, E. A. Laird, Yu. A. Pashkin, J. R. Prance in Physical Review Applied 15 034044 (2021)

• We have shown that reflectometry can measure a supercurrent transistor, i.e. a transistor whose ON state is superconducting and whose OFF state is resistive: Radio-frequency characterization of a supercurrent transistor made from a carbon nanotube by M. Mergenthaler, F.J. Schupp, A. Nersisyan, N. Ares, A. Baumgartner, C. Schönenberger, G.A.D. Briggs, P.J. Leek, E.A. Laird in arXiv:2103.16256 (2021)