4 papers · 1 filter
Exploring Bell Nonlocality with Extremal Non-Signaling Boxes
Emmanuel Zambrini Cruzeiro, Junior R. Gonzales-Ureta, Raman Choudhary +3
Extremal non-signaling (ENS) boxes are correlations that correspond to vertices of the non-signaling polytope of a Bell scenario. Neither quantum theory nor any theory for ideal me…
Contextuality with Pauli observables in cycle scenarios
Raman Choudhary, Rui Soares Barbosa
Contextuality is a fundamental marker of quantum non-classicality, which has emerged as a key resource for quantum computational advantage in multiple settings. Many such results h…
Exclusivity principle, Ramsey theory, and -cycle PR boxes
Raman Choudhary, Rui Soares Barbosa
The exclusivity principle (E-principle) states that the sum of probabilities of pairwise exclusive events cannot exceed 1. Unlike other principles proposed to characterize quantum…
Lifting noncontextuality inequalities
Raman Choudhary, Rui Soares Barbosa, Adán Cabello
Kochen-Specker contextuality is a fundamental feature of quantum mechanics and a crucial resource for quantum computational advantage and reduction of communication complexity. Its…