Phys. Rev. Lett. 65, 1838–1840 (1990)Extreme quantum entanglement in a superposition of macroscopically distinct statesReceived 29 May 1990; published in the issue dated 8 October 1990 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. © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.65.1838
DOI:
10.1103/PhysRevLett.65.1838
PACS:
03.65.Bz
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