542 citations · 2k across the 56 of their papers we have counts for
4 papers · 2 filters
Estimation of pure qubit states with collective and individual measurements
E. Bagan, A. Monras, R. Munoz-Tapia
We analyze the estimation of a qubit pure state by means of local measurements on identical copies and compare its averaged fidelity for an isotropic prior probability distribu…
Secrecy content of two-qubit states
A. Acín, J. Bae, E. Bagan +3
We analyze the set of two-qubit states from which a secret key can be extracted by single-copy measurements plus classical processing of the outcomes. We introduce a key distillati…
Multiple copy 2-state discrimination with individual measurements
A Acin, E. Bagan, M. Baig +2
We address the problem of non-orthogonal two-state discrimination when multiple copies of the unknown state are available. We give the optimal strategy when only fixed individual m…
Quantum reverse-engineering and reference frame alignment without non-local correlations
E. Bagan, M. Baig, R. Munoz-Tapia
Estimation of unknown qubit elementary gates and alignment of reference frames are formally the same problem. Using quantum states made out of qubits, we show that the theoreti…