We implement the impedance measurement technique (IMT) for characterization of interferometer-type superconducting qubits. In the framework of this method, the interferometer loop is inductively coupled to a high-quality tank circuit. We show that the IMT is a powerful tool to study a response of externally controlled two-level system to different types of excitations. Conclusive information about qubits is obtained from the read-out of the tank properties.
@article{arxiv.cond-mat/0402559,
title = {Radio-Frequency Method for Investigation of Quantum Properties of Superconducting Structures},
author = {E. Il'ichev and A. Yu. Smirnov and M. Grajcar and A. Izmalkov and D. Born and N. Oukhanski and Th. Wagner and W. Krech and H. -G. Meyer and A. M. Zagoskin},
journal= {arXiv preprint arXiv:cond-mat/0402559},
year = {2015}
}
Comments
10 pages, 10 figures;to be published in Fizika Nizkikh Temperatur (Low Temperature Physics); v3: minor polishing; final