Wigner distribution function and entanglement of generalized quantum optical vortex

Details Wigner distribution function and entanglement of generalized quantum optical vortex Wigner distribution function and entanglement of generalized quantum optical vortex

2011-01-25

arxiv.org/abs/1101.4736v6

AIP conference proceedings on "75 Years of Quantum Entanglement -- Foundations and Information Theoretic applications" at Kolk

Physics

Quantum Physics

6 pages. AIP format. To be published

Scientific paper

We calculate the Wigner (quasi)probability distribution function of the quantum optical elliptical vortex (QEV), generated by coupling squeezed vacuum states of two modes. The coupling between the two modes is performed by using beam splitter (BS) or a dual channel directional coupler (DCDC). The quantum interference due to the coupling between the two modes promises the generation of controlled entanglement for quantum computation and quantum tomography. We compute the entanglement of such QEV formed by non-classical radiation field, using Wigner function. We report a critical squeezing parameter above which the entanglement is less for higher vorticity, which is counter intuitive.

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