123 citations · 527 across the 30 of their papers we have counts for
4 papers · 1 filter
Complementary reductions for two qubits
Denes Petz, Jonas Kahn
In connection with optimal state determination for two qubits, the question was raised about the maximum number of pairwise complementary reductions. The main result of the paper t…
Optimal estimation of qubit states with continuous time measurements
Madalin Guta, Bas Janssens, Jonas Kahn
We propose an adaptive, two steps strategy, for the estimation of mixed qubit states. We show that the strategy is optimal in a local minimax sense for the trace norm distance as w…
Clean positive operator valued measures for qubits and similar cases
Jonas Kahn
In a recent paper, Buscemi and al. defined a notion of clean positive operator valued measures (POVMs). We here characterize which POVMs are clean in some class that we call quasi-…
Fast rate estimation of an unitary operation in SU(d)
Jonas Kahn
We give an explicit procedure based on entangled input states for estimating a operation with rate of convergence when sending particles through the device.…