Engineering non-Gaussian entangled states with vortices by photon subtraction

Details Engineering non-Gaussian entangled states with vortices by photon subtraction Engineering non-Gaussian entangled states with vortices by photon subtraction

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13g3008a&link_type=abstract

New Journal of Physics, Volume 13, Issue 7, pp. 073008 (2011).

Physics

1

Scientific paper

We show how a quantum mechanical vortex state of a two-mode system can be generated from a squeezed vacuum by subtracting a photon. The vortex state has nonclassical properties; for example, its Wigner function can be negative, in contrast to the Wigner function of the two-mode squeezed vacuum. We show, by calculating the logarithmic negativity parameter, that the vortex state has stronger entanglement than the two-mode squeezed vacuum.

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