125 citations · 316 across the 4 of their papers we have counts for
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Kind of entanglement that speeds up quantum evolution
Florian Fröwis
The "speed" of unitary quantum evolution was recently shown to be connected to entanglement in multipartite quantum systems. Here, we discuss a tighter version of the Mandelstam-Ta…
Measures of macroscopicity for quantum spin systems
Florian Fröwis, Wolfgang Dür
We investigate the notion of "macroscopicity" in the case of large quantum spin systems and provide two main results. First, we motivate the Fisher information as a measure for the…
Are cloned quantum states macroscopic?
F. Fröwis, W. Dür
We study quantum states produced by optimal phase covariant quantum cloners. We argue that cloned quantum superpositions are not macroscopic superpositions in the spirit of Schrödi…
Tensor operators: constructions and applications for long-range interaction systems
F. Fröwis, V. Nebendahl, W. Dür
We consider the representation of operators in terms of tensor networks and their application to ground-state approximation and time evolution of systems with long-range interactio…