arXiv:quant-ph/0510097 · Physical Review Letters

Realization of a Minimal Disturbance Quantum Measurement

Fabio Sciarrino, Marco Ricci, F. De Martini, Radim Filip, Ladislav Mišta

Published Jan 20, 2006• 75 citations

Abstract

We report the first experimental realization of an "optimal" quantum device able to perform a minimal disturbance measurement on polarization encoded qubits saturating the theoretical boundary established between the classical knowledge acquired of any input state, i.e., a "classical guess," and the fidelity of the same state after disturbance due to measurement. The device has been physically realized by means of a linear optical qubit manipulation, postselection measurement, and a classical feed-forward process.

DOI: 10.1103/physrevlett.96.020408

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