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Laser Physics

Distances between qubits and sensitivity to perturbations

SIMONA SALVINI, Stefano Olivares, Matteo G. A. Paris

Published Apr 1, 2007• 2 citations
Publisher

Abstract

We address the sensitivity of Bures and Hilbert distances between two qubits in revealing (i) small perturbations occurring to one of the qubits and (ii) small changes of the noise parameter in a noisy channel. A general relation is derived, as well as specific bounds for perturbations induced by relevant noisy quantum channels.
DOI
10.1134/s1054660x07040391

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