A theorem for the beam splitter entangler

Abstract

It is conjectured that the an entanglement output states from a beam splitter requires the nonclassicality in the input state(M.S. Kim, W. Son, V. Buzek and P. L. Knight, Phys. Rev. A, 65, 032323(2002)). Here we give a proof for this conjecture.

Two relevant literatures added. To appear in Phys. Rev. A

References in corpus (1)

• Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement

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