Andreev Spectroscopy for Superconducting Phase Qubits

Mikhail V. FeigeL'man, Lev Ioffe, Vadim B. Geshkenbein, Gianni Blatter

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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.

Original languageEnglish (US)
Pages (from-to)805-816
Number of pages12
JournalJournal of Low Temperature Physics
Volume118
Issue number5-6
Publication statusPublished - Dec 1 2000

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

FeigeL'man, M. V., Ioffe, L., Geshkenbein, V. B., & Blatter, G. (2000). Andreev Spectroscopy for Superconducting Phase Qubits. Journal of Low Temperature Physics, 118(5-6), 805-816.