Sadman Shanto

Apr 27, 2023 | link.aps.org | James T. Farmer |Azarin Zarassi |Sadman Shanto |Darian Hartsell

Abstract We report continuous measurements of quasiparticles trapping and clearing from Andreev bound states in aluminum nanobridge Josephson junctions integrated into a superconducting-qubit-like device. We find that trapping is well modeled by independent spontaneous emission events. Above 80 mK the clearing process is well described by the absorption of thermal phonons, but other temperature-independent mechanisms dominate at low temperature.