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We present a niobium-based Josephson device as prototype for quantum computation with flux qubits. The most interesting feature of this device is the use of a Josephson vertical interferometer to tune the flux qubit allowing the control of the off-diagonal Hamiltonian terms of the system. In the vertical interferometer, the Josephson current is precisely modulated from a maximum to zero with fine control by a small transversal magnetic field parallel to the rf superconducting loop plane.
IOP Publishing
Publication date: 
1 Jun 2006

C Granata, A Vettoliere, M Lisitskiy, S Rombetto, M Russo, B Ruggiero, V Corato, R Russo, P Silvestrini

Biblio References: 
Volume: 43 Issue: 1 Pages: 1405
Journal of Physics: Conference Series