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Wilfrid Laurier University Leaf
December 8, 2016
Canadian Excellence


James Blackburn

Classical Analysis of Capacitively Coupled Superconducting Qubits

James Blackburn, Jeffrey Marchese, Matteo Cirillo, and Niels Gronbech-Jensen

published: 2009 | Research publication | quantum Computing

An electrical circuit consisting of two capacitively coupled inductive loops, each interrupted by a Josephson
junction, is analyzed through the classical resistively and capacitively shunted junction RCSJ model. The
same circuit has recently been studied experimentally and the results were used to demonstrate quantum mechanical entanglement in the system by observing the correlated states of the two inductive loops after
initial microwave perturbations. This classical analysis shows that the observed phenomenon exists entirely
within the classical RCSJ model.

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revised Feb 18/09

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