Andreev Spectroscopy for Superconducting Phase Qubits

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

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


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
Pages (from-to)805-816
Number of pages12
JournalJournal of Low Temperature Physics
Issue number5-6
Publication statusPublished - 2000
Externally publishedYes


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