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arXiv · 1406.6212

Entanglement propagation of a quantum optical vortex state

Anindya Banerji·Ravindra Pratap Singh·Dhruba Banerjee·Abir Bandyopadhyay
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Abstract

We study the entanglement evolution of a quantum optical vortex state propagating through coupled lossless waveguides. We consider states generated by coupling two squeezed modes using a sequence of beam splitters and also by subtracting photons from the signal in spontaneous parametric down conversion. We reconstruct the Wigner function at a later time to study the correlation and quantify the entanglement after propagation using \emph{logarithmic negativity}.

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Anindya Banerji, Ravindra Pratap Singh, Dhruba Banerjee, Abir Bandyopadhyay. 2014-06-24. Entanglement propagation of a quantum optical vortex state. https://doi.org/10.1016/j.optcom.2016.06.025

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