Journal of the Optical Society of America A

Radial–angular entanglement in Laguerre–Gaussian mode superpositions

S. Asokan, J. Solomon Ivan

Published Apr 19, 2018• 6 citations

Abstract

Classical optic entanglement between the radial and angular degrees of freedom in Laguerre-Gaussian mode superpositions is explored within the framework of symmetric first-order optical systems. The Gouy phase picked by a Laguerre-Gaussian mode on free propagation is seen to be of consequence to the radial-angular entanglement in the mode superpositions. We illustrate examples of mode superpositions for which radial-angular entanglement is preserved on passage through symmetric first-order optical systems. An indicator of radial-angular entanglement in two-mode Laguerre-Gaussian superpositions is demonstrated to be a robust free space signaler in the presence of atmospheric turbulence, through examples.

DOI: 10.1364/josaa.35.000785

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