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Proceedings Paper

Taking the quantum eraser to the abstract world
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Paper Abstract

Youngs double slit experiment is one of the most celebrated achievements in quantum and classical optics; it provides experimental proof of the wave-particle duality of light. When the paths of the double slit are marked with orthogonal polarizations, the path information is revealed and no interference pattern is observed. However, the path information can be erased with a complimentary analysis of the polarization. Here we use hybrid entanglement between photons carrying orbital angular momentum and polarization to show that, just as in Young's experiment, the paths (OAM) marked with polarization do not lead to interference. However, when introducing the eraser (polarizer) which projects the polarization of one of the entangled photons onto a complementary polarization basis, the OAM (paths) are allowed to interfere, leading to the formation of azimuthal fringes whose frequency is proportional to the OAM content carried by the photon.

Paper Details

Date Published: 30 August 2017
PDF: 7 pages
Proc. SPIE 10409, Quantum Communications and Quantum Imaging XV, 1040906 (30 August 2017); doi: 10.1117/12.2274173
Show Author Affiliations
I. Nape, Univ. of the Witwatersrand (South Africa)
B. Ndagano, Univ. of the Witwatersrand (South Africa)
A. Forbes, Univ. of the Witwatersrand (South Africa)

Published in SPIE Proceedings Vol. 10409:
Quantum Communications and Quantum Imaging XV
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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