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          Institute: MPI für Physik Komplexer Systeme     Collection: Superconductivity and magnetism     Display Documents



ID: 478645.0, MPI für Physik Komplexer Systeme / Superconductivity and magnetism
Characterization of superconducting structures designed for qubit realizations
Authors:Il'ichev, E.; Wagner, T.; Fritzsch, L.; Kunert, J.; Schultze, V.; May, T.; Hoenig, H. E.; Meyer, H. G.; Grajcar, M.; Born, D.; Krech, W.; Fistul, M. V.; Zagoskin, A. M.
Language:English
Date of Publication (YYYY-MM-DD):2002-06-01
Title of Journal:Applied Physics Letters
Journal Abbrev.:Appl. Phys. Lett.
Volume:80
Issue / Number:22
Start Page:4184
End Page:4186
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We implement the impedance measurement technique in order to characterize superconducting structures designed for applications in quantum computing. We report an experimental study of the circuit consisting of three small Josephson junctions incorporated in a low-inductance superconducting loop. Measurements of the circuit response to an applied weak ac bias as a function of the external magnetic flux phi(e) yield complete information on the properties of the circuit. We found that the system displays two metastable states. From experimental data, we have determined the magnetic field dependent Josephson energy U(phi(e)) of these states, the potential barrier DeltaU between these states, as well as the difference of the critical currents of the junction in the loop. (C) 2002 American Institute of Physics.
External Publication Status:published
Document Type:Article
Communicated by:Heidrun Näther
Affiliations:MPI für Physik Komplexer Systeme/Visitors Program
External Affiliations:Inst Phys High Technol, POB 100239, D-07702 Jena, Germany; Inst Phys High Technol, D-07702 Jena, Germany; Univ Jena, Inst Solid State Phys, D-07743 Jena, Germany; Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany; Univ British Columbia, D Wave Syst & Phys & Astron Dept, Vancouver, BC V6J 4Y3, Canada
Identifiers:ISI:000175771800034
ISSN:0003-6951
URL:http://ojps.aip.org/getabs/servlet/GetabsServlet?p...
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