A practical strategy for synchronizing the properties of compound Josephson junction rf-SQUID qubits on a multiqubit chip has been demonstrated. The impacts of small (∼1) fabrication variations in qubit inductance and critical current can be minimized by the application of a custom tuned flux offset to the CJJ structure of each qubit. This strategy allows for simultaneous synchronization of the qubit persistent current and tunnel splitting over a range of external bias parameters that is relevant for the implementation of an adiabatic quantum processor.
@article{arxiv.0903.1884,
title = {Synchronization of Multiple Coupled rf-SQUID Flux Qubits},
author = {R. Harris and F. Brito and A. J. Berkley and J. Johansson and M. W. Johnson and T. Lanting and P. Bunyk and E. Ladizinsky and B. Bumble and A. Fung and A. Kaul and A. Kleinsasser and S. Han},
journal= {arXiv preprint arXiv:0903.1884},
year = {2015}
}