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Quantum State Preparation Representation

Spatial distribution of Spontaneous Parametric Down-Converted Photons for higher order Optical Vortices

arXiv
Authors: Shashi Prabhakar, Salla Gangi Reddy, A Aadhi, Ashok Kumar, Chithrabhanu P, G. K. Samanta, R. P. Singh

Year

2013

Paper ID

2222

Status

Preprint

Abstract Read

~2 min

Abstract Words

124

Citations

N/A

Abstract

We make a source of entangled photons (SEP) using spontaneous parametric down-conversion (SPDC) in a non-linear crystal and study the spatial distribution of photon pairs obtained through the down-conversion of different modes of light including higher order vortices. We observe that for the Gaussian pump, the thickness of the SPDC ring varies linearly with the radius of pump beam. However, in case of vortex carrying beams, two concentric SPDC rings are formed for beams above a critical radius. The full width at half maximum (FWHM) of SPDC rings increase with increase in the order of optical vortex beams. The presence of a critical beam width for the vortices as well as the observed FWHM of the SPDC rings are supported with our numerical results.

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  • We make a source of entangled photons (SEP) using spontaneous parametric down-conversion (SPDC) in a non-linear crystal and study the spatial distribution of photon pairs...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1401.0147 [2] arXiv https://arxiv.org/abs/1401.0147 [3] Publisher https://arxiv.org/abs/1401.0147

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