Quantum probes with squeezing or entanglement, routed via an identifiability-guaranteeing algorithm, enable improved estimation of link transmissivities in general optical networks using det(FIM) and tr(FIM^{-1}) metrics.
Adjustment of an inverse matrix corresponding to a change in one element of a given matrix.The Annals of Mathematical Statistics, 21(1):124–127
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Quantum-enhanced Network Tomography
Quantum probes with squeezing or entanglement, routed via an identifiability-guaranteeing algorithm, enable improved estimation of link transmissivities in general optical networks using det(FIM) and tr(FIM^{-1}) metrics.