Flux qubits and readout device with two independent flux lines

B. L.T. Plourde, T. L. Robertson, P. A. Reichardt, T. Hime, S. Linzen, C. E. Wu, John Clarke

Research output: Contribution to journalArticlepeer-review

69 Scopus citations


We report measurements on two superconducting flux qubits coupled to a readout superconducting quantum interference device (SQUID). Two on-chip flux bias lines allow independent flux control of any two of the three elements, as illustrated by a two-dimensional qubit flux map. The application of microwaves yields a frequency-flux dispersion curve for 1- and 2-photon driving of the single-qubit excited state, and coherent manipulation of the single-qubit state results in Rabi oscillations and Ramsey fringes. This architecture should be scalable to many qubits and SQUIDs on a single chip.

Original languageEnglish (US)
Article number060506
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number6
StatePublished - Aug 1 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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