389 citations · 1.5k across the 7 of their papers we have counts for
4 papers · 2 filters
Entanglement and permutational symmetry
Geza Toth, Otfried Gühne
We study the separability of permutationally symmetric quantum states. We show that for bipartite symmetric systems most of the relevant entanglement criteria coincide. However, we…
Experimental observation of an entire family of four-photon entangled states
Witlef Wieczorek, Christian Schmid, Nikolai Kiesel +3
A single linear optical set-up is used to observe an entire family of four-photon entangled states. This approach breaks with the inflexibility of present linear-optical set-ups us…
Multiparticle entanglement under the influence of decoherence
O. Gühne, F. Bodoky, M. Blaauboer
We present a method to determine the decay of multiparticle quantum correlations as quantified by the geometric measure of entanglement under the influence of decoherence. With thi…
Lower bounds on entanglement measures from incomplete information
O. Gühne, M. Reimpell, R. F. Werner
How can we quantify the entanglement in a quantum state, if only the expectation value of a single observable is given? This question is of great interest for the analysis of entan…