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Proceedings Paper

Imaging single photons in non-separable states of polarization and spatial-mode
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Paper Abstract

Non-separable superpositions of polarization and spatial mode of a single photon produce a state that has a polarization that depends on the transverse position, and contains all states of polarization represented on the Poincaré sphere. We have done measurements of the space-dependent state of polarization of single photons prepared in distinct 2×2 (qubit-qubit) and 2×3 (qubit-qutrit) non-separable superpositions of Laguerre-Gauss spatial and polarization states. Detection was done by polarimetry of the light projected at distinct locations in the transverse plane. The polarization patterns had a C-point polarization singularity (lemon, star or monstar) at the center of the transverse wavefunction.

Paper Details

Date Published: 8 October 2014
PDF: 9 pages
Proc. SPIE 9225, Quantum Communications and Quantum Imaging XII, 922506 (8 October 2014); doi: 10.1117/12.2061199
Show Author Affiliations
Xinru Cheng, Colgate Univ. (United States)
Enrique J. Galvez, Colgate Univ. (United States)

Published in SPIE Proceedings Vol. 9225:
Quantum Communications and Quantum Imaging XII
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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