389 citations · 2.4k across the 57 of their papers we have counts for
4 papers · 1 filter
Minimal scheme for certifying three-outcome qubit measurements in the prepare-and-measure scenario
Jonathan Steinberg, H. Chau Nguyen, Matthias Kleinmann
The number of outcomes is a defining property of a quantum measurement, in particular, if the measurement cannot be decomposed into simpler measurements with fewer outcomes. Import…
Number-phase uncertainty relations and bipartite entanglement detection in spin ensembles
Giuseppe Vitagliano, Matteo Fadel, Iagoba Apellaniz +4
We present a method to detect bipartite entanglement based on number-phase-like uncertainty relations in split spin ensembles. First, we derive an uncertainty relation that plays t…
Kochen-Specker Contextuality
Costantino Budroni, Adán Cabello, Otfried Gühne +2
A central result in the foundations of quantum mechanics is the Kochen-Specker theorem. In short, it states that quantum mechanics is in conflict with classical models in which the…
Operational Theories in Phase Space: Toy Model for the Harmonic Oscillator
Martin Plávala, Matthias Kleinmann
We show how to construct general probabilistic theories that contain an energy observable dependent on position and momentum. The construction is in accordance with classical and q…