2.4k citations · 3.8k across the 12 of their papers we have counts for
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Mermin inequalities for perfect correlations
Adan Cabello, Otfried Gühne, David Rodriguez
Any n-qubit state with n independent perfect correlations is equivalent to a graph state. We present the optimal Bell inequalities for perfect correlations and maximal violation fo…
Toolbox for entanglement detection and fidelity estimation
Otfried Gühne, Chao-Yang Lu, Wei-Bo Gao +1
The determination of the state fidelity and the detection of entanglement are fundamental problems in quantum information experiments. We investigate how these goals can be achieve…
Parameter estimation for mixed states from a single copy
Thomas Konrad, Otfried Gühne, Jürgen Audretsch +1
Given a single copy of a mixed state of the form ρ=λρ_1+(1-λ)ρ_2, what is the optimal measurement to estimate the parameter λ, if ρ_1 and ρ_2 are known? We present a general strate…