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)

Abstract

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
• Status: Published
• Refereed: Yes
• 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: 1094-4087
• 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