Quantum Information Processing

, Volume 5, Issue 6, pp 563–575 | Cite as

Efficient Read-out of Flux Qubits at Flux Degeneracy

  • Andreas Käck
  • Göran Wendin
  • Frank K. Wilhelm

We discuss a novel method to read out a superconducting flux qubit at the flux degeneracy point, using a charge measurement through a single charge transistor SCT. The interaction is based on the Aharonov-Casher geometric phase. The read-out cycle indicates one of the states by a fluorescence-like cycle. We discuss how to efficiently implement this scheme with the SCT in the RF mode.


Quantum information flux qubits 


03.67.Lx 74.40.+k 85.25.Cp 


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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Andreas Käck
    • 1
  • Göran Wendin
    • 1
  • Frank K. Wilhelm
    • 2
    • 3
  1. 1.Dept. of Microtechnology and Nanoscience (MC2)Chalmers University of TechnologyGothenburgSweden
  2. 2.Sektion Physik and CeNSLudwig-Maximilians-UniversitätMünchenGermany
  3. 3.Department of Physics and Astronomy and IQCUniversity of WaterlooWaterlooCanada

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