Optimal phase estimation in quantum networks

We address the problem of estimating the phase phi given N copies of the phase rotation u(phi) within an array of quantum operations in finite dimensions. We first consider the special case where the array consists of an arbitrary input state followed by any arrangement of the N phase rotations, and...

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Bibliographic Details
Main Authors: Dam, W, D'Ariano, G, Ekert, A, Macchiavello, C, Mosca, M
Format: Conference item
Published: 2007