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arXiv · 1006.5665

Information - Disturbance Tradeoff in the Estimation of a Unitary Transformation

Alessandro Bisio·Giulio Chiribella·Giacomo Mauro D'Ariano·Paolo Perinotti
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Abstract

We address the problem of the information-disturbance trade-off associated to the estimation of a quantum transformation, and show how the extraction of information about the a black box causes a perturbation of the corresponding input-output evolution. In the case of a black box performing a unitary transformation, randomly distributed according to the invariant measure, we give a complete solution of the problem, deriving the optimal trade-off curve and presenting an explicit construction of the optimal quantum network.

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Alessandro Bisio, Giulio Chiribella, Giacomo Mauro D'Ariano, Paolo Perinotti. 2010-11-10. Information - Disturbance Tradeoff in the Estimation of a Unitary Transformation. https://doi.org/10.1103/physreva.82.062305

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