Abstract
Recently, macroscopic violation of classical Cauchy-Schwarz (CS) inequalities has been demonstrted experimentally [1], A new classification of macroscopic nonclassical light, “anti-Schwarz” light was proposed, in which one of the CS inequalities is violated [2], We predicted that the CS inequalities may be violated by “antiSchwarz” twin beams in the absence of a sub-shot noise intensity difference. This indicates that “anti-Schwarz” beams are different from conventional “quantum-correlated” twin beams generated from optical parameter down-conversion [3], The CS inequality can be expressed in terms of photon noise spectral densities as [2]
© 1996 Optical Society of America
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