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Proceedings Paper

Recovery of quantum-entanglement after encountering an obstruction
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Paper Abstract

Bessel-Gaussian (BG) modes possess unique characteristics that have been exploited in the classical world and which may also o er advantages over other modes in the quantum regime. We use the reconstruction property of BG modes to recover the degree of entanglement of our quantum state after encountering an obstruction. For BG modes, there exists a minimum distance behind an obstruction before reconstruction of the mode occurs. By moving the obstruction along the path of propagation of the entangled photon pairs, we quantitatively show a increase in the degree of entanglement as the obstruction moved beyond that minimum distance.

Paper Details

Date Published: 25 February 2014
PDF: 7 pages
Proc. SPIE 8999, Complex Light and Optical Forces VIII, 899918 (25 February 2014); doi: 10.1117/12.2037651
Show Author Affiliations
Melanie McLaren, CSIR National Laser Ctr. (South Africa)
Univ. of Stellenbosch (South Africa)
Thandeka Mhlanga, CSIR National Laser Ctr. (South Africa)
Univ. of KwaZulu-Natal (South Africa)
Miles J. Padgett, Univ. of Glasgow (United Kingdom)
Filippus S. Roux, CSIR National Laser Ctr. (South Africa)
Andrew Forbes, CSIR National Laser Ctr. (South Africa)
Univ. of Stellenbosch (South Africa)
Univ. of KwaZulu-Natal (South Africa)


Published in SPIE Proceedings Vol. 8999:
Complex Light and Optical Forces VIII
David L. Andrews; Enrique J. Galvez; Jesper Glückstad, Editor(s)

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