125 citations · 380 across the 7 of their papers we have counts for
7 papers
Does a large quantum Fisher information imply Bell correlations?
Florian Fröwis, Matteo Fadel, Philipp Treutlein +2
The quantum Fisher information (QFI) of certain multipartite entangled quantum states is larger than what is reachable by separable states, providing a metrological advantage. Are…
Tight steering inequalities from generalized entropic uncertainty relations
Tamás Kriváchy, Florian Fröwis, Nicolas Brunner
We establish a general connection between entropic uncertainty relations, Einstein-Podolsky-Rosen steering, and joint measurability. Specifically, we construct steering inequalitie…
Lower bounds on the size of general Schrödinger-cat states from experimental data
Florian Fröwis
Experimental progress with meso- and macroscopic quantum states (i.e., general Schrodinger-cat states) was recently accompanied by theoretical proposals on how to measure the merit…
Linking Measures for Macroscopic Quantum States via Photon-Spin Mapping
F. Fröwis, N. Sangouard, N. Gisin
We review and compare several measures that identify quantum states that are "macroscopically quantum". These measures were initially formulated either for photonic systems or spin…
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…
Stability of encoded macroscopic quantum superpositions
Florian Fröwis, Wolfgang Dür
The multipartite Greenberger-Horne-Zeilinger (GHZ) state is a paradigmatic example of a highly entangled multipartite states with distinct quantum features. However, the GHZ state…