Multiparameter Approach to Dynamic Quantum Phase Estimation

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چکیده

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Supplementary Information: Quantum-enhanced multiparameter estimation in multiarm interferometers

To prove Eq. (S1) we recall that the square root of the positive definite Fisher matrix is given by the matrix with the same (orthonormal) eigenvectors as F and the square root of its eigenvalues. We indicate as fi > 0 and vi (with v> i vj = δi,j) the eigenvalues and eigenvectors of F, respectively (Fvi = fivi). Notice that F is real and symmetric and thus diagonalize. In addition, F is positiv...

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ژورنال

عنوان ژورنال: Proceedings

سال: 2019

ISSN: 2504-3900

DOI: 10.3390/proceedings2019012055