3 papers
quant-ph2026
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…
quant-ph2025
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…
quant-ph2025
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…