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Phys Rev Lett. 2002 Dec 16;89(25):253601. Epub 2002 Dec 4.

Experimental demonstration of continuous variable polarization entanglement.

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Department of Physics, Faculty of Science, Australian National University, ACT 0200, Australia.


We report the experimental transformation of quadrature entanglement between two optical beams into continuous variable polarization entanglement. We extend the inseparability criterion proposed by Duan et al. [Phys. Rev. Lett. 84, 2722 (2000)]] to polarization states and use it to quantify the entanglement. We propose an elaboration utilizing two quadrature entangled pairs for which all three Stokes operators between a pair of beams are entangled.

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