A closed-form necessary and sufficient condition for any two-qubit state to show hidden nonlocality w.r.t the Bell-CHSH inequality

2014/10/28 by Rajarshi Pal, Pal, Rajarshi, Sibasish Ghosh +1
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph) #quant-ph

paper · pdf · doi:10.48550/arxiv.1410.7574

6 pages, Comments are welcome

arxiv created 2014/10/28 · openalex publication_date 2014/10/28 · arxiv updated 2014/10/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this note, we discuss a closed-form necessary and sufficient condition for any two-qubit state to show hidden nonlocality w.r.t the Bell-CHSH inequality. This is then used to numerically compute the relative volume of states showing hidden Bell-CHSH non-locality , among all two-qubit states with one-sided reduction maximally mixed.

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