1. A New Flux/Phase Qubit With Integrated Readout.
- Author
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Castellano, Maria Gabriella, Chiarello, Fabio, Leoni, Roberto, Torrioli, Guido, Carelli, Pasquale, Cosmelli, Carlo, di Bucchianico, Marilena, Mattioli, Francesco, Poletto, Stefano, and Simeone, Daniela
- Subjects
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SUPERCONDUCTORS , *CRYOELECTRONICS , *SOLID state electronics , *SEMICONDUCTOR junctions , *INTERFACES (Physical sciences) , *MAGNETIC flux - Abstract
We propose a new scheme for a flux/phase qubit, based on a double-SQUID modified to achieve a direct readout of the flux state. The readout is performed by inserting a large Josephson junction in the SQUID loop; the junction is biased by an external current and switches from the zero-voltage to the running state depending on the flux state of the qubit. We report recent results concerning the theoretical behavior and the experimental characterization at 4.2 K of the device, which has been realized with Nb/AlOx/Nb trilayer technology. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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