178 citations · 883 across the 17 of their papers we have counts for
17 papers
Simple Hardy-like proof of quantum contextuality
Adan Cabello, Piotr Badziag, Marcelo Terra Cunha +1
Contextuality and nonlocality are two fundamental properties of nature. Hardy's proof is considered the simplest proof of nonlocality and can also be seen as a particular violation…
Bound entangled states with extremal properties
Piotr Badziag, Karol Horodecki, Michal Horodecki +2
Following recent work of Beigi and Shor, we investigate PPT states that are "heavily entangled." We first exploit volumetric methods to show that in a randomly chosen direction, th…
Experimental Tests of Classical and Quantum Dimensions
Johan Ahrens, Piotr Badziag, Marcin Pawlowski +2
We report on an experimental test of classical and quantum dimension. We have used a dimension witness which can distinguish between quantum and classical systems of dimension 2,3…
Kochen-Specker set with seven contexts
Petr Lisonek, Piotr Badziag, Jose R. Portillo +1
The Kochen-Specker (KS) theorem is a central result in quantum theory and has applications in quantum information. Its proof requires several yes-no tests that can be grouped in co…
Experimental Device-independent Tests of Classical and Quantum Dimensions
Johan Ahrens, Piotr Badziag, Adan Cabello +1
A fundamental resource in any communication and computation task is the amount of information that can be transmitted and processed. Information encoded in a classical system is li…
Bell inequalities for the simplest exclusivity graph
Muhamad Sadiq, Piotr Badziag, Mohamed Bourennane +1
Which is the simplest logical structure for which there is quantum nonlocality? We show that there are only three bipartite Bell inequalities with quantum violation associated with…