Extreme quantum entanglement in a superposition of macroscopically distinct states

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Abstract

A Bell inequality is derived for a state of n spin-1/2 particles which superposes two macroscopically distinct states. Quantum mechanics violates this inequality by an amount that grows exponentially with n.

Topics & Keywords

Quantum Mechanics and Applications Quantum Information and Cryptography Quantum Computing Algorithms and Architecture

UN Sustainable Development Goals

Reduced inequalities

Publication Details

Published in: Physical Review Letters

Volume 65, Issue 15, pp. 1838-1840

DOI: 10.1103/physrevlett.65.1838

Field-Weighted Citation Impact: 6.28