Abstract
Based upon standard angular momentum theory, we develop a framework to investigate polarization squeezing and multipartite entanglement of a quantum light field. Both mean polarization and variances of the Stokes parameters are obtained analytically, with which we study recent observation of triphoton states [ L. K. Shalm et al., Nature 457, 67 (2009) ]. Our results show that the appearance of the maximally entangled NOON state accompanied by , is a flip of mean polarization and can be well understood in terms of quantum Fisher information.
© 2010 Optical Society of America
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