Prof. Dr. Otfried Gühne

Toolbox for entanglement detection and fidelity estimation

Covariance matrices and the separability problem

Parameter estimation for mixed states from a single copy

Detection of multipartite entanglement with two-body correlations

Entanglement verification for quantum-key-distribution systems with an underlying bipartite qubit-mode structure

Entanglement of trapped ions

Two-setting Bell inequalities for graph states

Energy and multipartite entanglement in multidimensional and frustrated spin models

Generalized spin-squeezing inequalities in N -qubit systems: Theory and experiment

Entanglement of trapped ions

Entanglement criteria based on local uncertainty relations are strictly stronger than the computable cross norm criterion

Nonlinear entanglement witnesses