Z.G. Ivanov
D-Wave Systems
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Featured researches published by Z.G. Ivanov.
Applied Physics Letters | 1991
Z.G. Ivanov; Per-Åke Nilsson; Dag Winkler; Jose A. Alarco; T. Claeson; E.A. Stepantsov; A. Ya. Tzalenchuk
We have studied weak links and dc–SQUIDs made from pulsed laser deposited YBa2Cu3O7−δ thin films on Y–ZrO2 bicrystal substrates. The transport properties of the weak links were studied as a function of the misorientation angle (θ) between the two halves of the bicrystal and an exponential dependence of the weak link critical current density was observed for angles up to 40° at 77 K. Josephson effects with clear microwave and magnetic field responses were observed. An optimum dc–SQUID performance at 77 K was obtained for θ=32°. At this temperature, we achieved a periodic magnetic field response with a modulation depth of 12 μV.
IEEE Transactions on Applied Superconductivity | 1999
A.Ya. Tzalenchuk; Z.G. Ivanov; S. Pehrson; Tord Claeson; Ants Lõhmus
We present a design of a scanning SQUID microscope (SSM) operating in a temperature range between about 5 K (2 K with pumping) and 100 K.
IEEE Transactions on Applied Superconductivity | 2003
A. Ya. Tzalenchuk; Tobias Lindström; Serge A. Charlebois; E.A. Stepantsov; Alexandre M. Zagoskin; Z.G. Ivanov; Tord Claeson
Most proposed realizations of a high temperature superconductor (HTS) qubit require the use of very small Josephson junctions. The properties of bicrystal junctions are especially interesting since they make it possible to implement several types of flux qubits in a relatively simple way. We have developed a technique that allows us to produce high quality sub-micrometer junctions in a reproducible way using bicrystal technology. We have successfully fabricated and characterized a large number of YBCO junctions and SQUIDs with bridge width as small as 0.2 micrometer on 0/spl deg/-3/spl deg/, 0/spl deg/-40/spl deg/ and 0/spl deg/-45/spl deg/ bicrystal STO substrates. The properties of these junctions have been extensively examined at temperatures down to 20 mK. The effects of external magnetic fields on these structures have been investigated. Figures of merit for the proposed qubits were also extracted from these measurements.
Archive | 2003
Alexander Ya. Tzalenchuk; Z.G. Ivanov; Jeremy P. Hilton
Archive | 2002
Alexander Ya. Tzalenchuk; Z.G. Ivanov; Miles F. H. Steininger
Archive | 2002
Z.G. Ivanov; Alexander Tzalentchuk; Jeremy P. Hilton; Alexander Maassen van den Brink
Institute for Future Environments | 1993
Z.G. Ivanov; Jose A. Alarco; Tord Claeson; P.aaA Nilsson; E. Olsson; H. K. Olsson; E.A. Stepantsov; A. Ya. Tzalenchuk; Dag Winkler
Institute for Future Environments; Science & Engineering Faculty | 1995
Jose A. Alarco; E. Olsson; Z.G. Ivanov; Dag Winkler; E.A. Stepantsov; O.I. Lebedev; Alexander L. Vasiliev; A. Ya. Tzalenchuk; N.A. Kiselev
Institute for Future Environments; Science & Engineering Faculty | 1994
G. Brorsson; E. Olsson; Z.G. Ivanov; E.A. Stepantsov; Jose A. Alarco; Yu. A. Boikov; Tord Claeson; P. Berastegui; V. Langer; M. Löfgren
Institute for Future Environments | 1994
Jose A. Alarco; E. Olsson; Z.G. Ivanov; Dag Winkler; Tord Claeson; E.A. Stepantsov; O.I. Lebedev; Alexander L. Vasiliev; N.A. Kiselev
