Entangled bessel-gaussian beams

McLaren, M., Agnew, M., Leach, J., Roux, F.S., Padgett, M.J. , Boyd, R.W. and Forbes, A. (2012) Entangled bessel-gaussian beams. Optics Express, 20(21), pp. 23589-23597. (doi: 10.1364/OE.20.023589)

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Orbital angular momentum (OAM) entanglement is investigated in the Bessel-Gaussian (BG) basis. Having a readily adjustable radial scale, BG modes provide an alternative basis for OAM entanglement over Laguerre-Gaussian modes. We show that the OAM bandwidth in terms of BG modes can be increased by selection of particular radial wavevectors and leads to a flattening of the spectrum, which allows for higher dimensionality in the entangled state. We demonstrate entanglement in terms of BG modes by performing a Bell-type experiment and showing a violation of the Clauser-Horne-Shimony-Holt inequality for the ℓ = ±1 subspace. In addition, we use quantum state tomography to indicate higher-dimensional entanglement in terms of BG modes.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles
Authors: McLaren, M., Agnew, M., Leach, J., Roux, F.S., Padgett, M.J., Boyd, R.W., and Forbes, A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN (Online):1094-4087
Copyright Holders:Copyright © 2012 Optical Society of America
First Published:First published in Optics Express 20(21):23589-23597
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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