Quantum Information Processing and Quantum Communications

Josephson arrays as quantum channels

aula 102 - Venerdì 28 maggio ore 11.00
  ROSARIO FAZIO, Scuola Normale Superiore, 56126 Pisa, Italy

Sept. 1989 PhD in Physics University of Catania;
April 1989 - Oct. 1990 Postdoc Department of Physics, TU-Delft;
Oct. 1990 - Oct. 1998 Assistant Professor, Faculty of Engeneering - University of Catania;
Jan. 1995 - Dec. 1995 Visiting Professor at
Institut fuer Theoretische Physik - Karlsruhe;
Oct. 1998 - Oct. 2001 Associate Professor of Condensed Matter Physics, University of Catania;
Oct. 2001 - Present Associate Professor of Condensed Matter Physics, Scuola Normale Superiore, Pisa.

Rosario Fazio
  Josephson junction arrays can behave as a quantum channels and used to transfer quantum information between distant sites [1]. In this work we discuss simple protocols to realize, withouth external control, state transfer and cloning with high
fidelity in Josephson chains.
The great advantage of these schemes is that they not require complicate gating but they simply use the natural dynamics of a properly designed array. We propose an
experiment, realizable with present day technology, that may allow to implement these protocols. Communication is only mildy affected by the presence of unavoidable defects in the Josephson array. [1] Work done in collaboration with C. Bruder and A. Romito