arXiv:cond-mat/9910506

Andreev Spectroscopy for Superconducting Phase Qubits

M. V. Feigel’man, L. B. Ioffe, V. B. Geshkenbeǐn, G. Blatter

Published Oct 31, 1999• 1 citation

Abstract

We propose a new method to measure the coherence time of superconducting phase qubits based on the analysis of the magnetic-field dependent dc nonlinear Andreev current across a high-resistance tunnel contact between the qubit and a dirty metal wire and derive a quantitative relation between the subgap I-V characteristic and the internal correlation function of the qubit.

DOI: 10.48550/arxiv.cond-mat/9910506

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