Polarization squeezing and multipartite entanglement of triphoton states

Details Polarization squeezing and multipartite entanglement of triphoton states Polarization squeezing and multipartite entanglement of triphoton states

2010-03-14

arxiv.org/abs/1003.2771v1

J. Opt. Soc. Am. B 27, A105 (2010)

Physics

Quantum Physics

5 pages, 3 figures, to be published in the Quantum Optical Information Technology feature issue of JOSA B.

Scientific paper

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 {\it et al}, Nature \textbf{457}, 67 (2009)]. Our results show that the appearance of maximally entangled NOON states accompanies with a flip of mean polarization and can be well understood in terms of quantum Fisher information.

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