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Proceedings Paper

Encoding mutually unbiased bases in orbital angular momentum for quantum key distribution
Author(s): A. Dudley; M. Mafu; S. Goyal; D. Giovannini; M. McLaren; T. Konrad; M. J. Padgett; F. Petruccione; N. Lütkenhaus; A. Forbes
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Paper Abstract

We encode mutually unbiased bases (MUBs) using the higher-dimensional orbital angular momentum (OAM) degree of freedom and illustrate how these states are encoded on a phase-only spatial light modulator (SLM). We perform (d - 1)- mutual unbiased measurements in both a classical prepare and measure scheme and on entangled photon pairs for dimensions ranging from d = 2 to 5. The calculated average error rate, mutual information and secret key rate show an increase in information capacity as well as higher generation rates as the dimension increases.

Paper Details

Date Published: 25 February 2014
PDF: 9 pages
Proc. SPIE 8999, Complex Light and Optical Forces VIII, 89991I (25 February 2014); doi: 10.1117/12.2038362
Show Author Affiliations
A. Dudley, CSIR National Laser Ctr. (South Africa)
M. Mafu, Univ. of KwaZulu-Natal (South Africa)
S. Goyal, Univ. of KwaZulu-Natal (South Africa)
D. Giovannini, Univ. of Glasgow (United Kingdom)
M. McLaren, CSIR National Laser Ctr. (South Africa)
T. Konrad, Univ. of KwaZulu-Natal (South Africa)
M. J. Padgett, Univ. of Glasgow (United Kingdom)
F. Petruccione, Univ. of KwaZulu-Natal (South Africa)
N. Lütkenhaus, Univ. of Waterloo (Canada)
A. Forbes, CSIR National Laser Ctr. (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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