Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2003-10-09
Phys. Rev. B 71, 064516 (2005)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 pages, 3 figures
Scientific paper
10.1103/PhysRevB.71.064516
We report on design and fabrication of a new type of flux qubit that capitalizes on intrinsic properties of submicron YBCO grain boundary junctions. The operating point is protected from the fluctuations of the external fields, already on the classical level; the effects of external perturbations are absent, to the second or third order, depending on the character of the coupling. We propose an experiment to observe quantum tunneling and Rabi oscillations in the qubit. Estimate of the decoherence due to fluctuations of the external flux is presented.
Amin M. H. S.
Charlebois S.
Claeson Tord
Lindstrom Tobias
Smirnov Alexei Yu.
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