Phys. Rev. Lett. 88, 210401 (2002) [4 pages]Bell’s Theorem for General N-Qubit StatesReceived 28 June 2001; published 9 May 2002 We derive a single general Bell inequality which is a sufficient and necessary condition for the correlation function for N particles to be describable in a local and realistic picture, for the case in which measurements on each particle can be chosen between two arbitrary dichotomic observables. We also derive a necessary and sufficient condition for an arbitrary N-qubit mixed state to violate this inequality. This condition is a generalization and reformulation of the Horodecki family condition for two qubits. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.210401
DOI:
10.1103/PhysRevLett.88.210401
PACS:
03.65.Ud, 03.67.-a, 42.50.Ar
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.