Journal of Physics Conference Series

A simple circuit to supply constant flux biases for superconducting quantum computing

Michael Wulf, Thomas Ohki, M. J. Feldman

Published Jun 1, 2006• 4 citations

Abstract

We present and demonstrate experimentally a persistent-current bias loop that is intended to provide an on-chip stable dc magnetic field to flux-bias the flux qubits in a superconducting quantum computer. The bias loop is initialized to approximately the desired persistent current and then the external source is disengaged; this procedure prevents the fluctuations in the bias sources from causing decoherence in the qubit.

DOI: 10.1088/1742-6596/43/1/342

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