3 papers
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…
quant-ph2024
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…