Encoding mutually unbiased bases in orbital angular momentum for quantum key distribution

A. Dudley; M. Mafu; S. Goyal; D. Giovannini; M. McLaren; T. Konrad; M. J. Padgett; F. Petruccione; N. Lütkenhaus; A. Forbes

doi:10.1117/12.2038362

25 February 2014 Encoding mutually unbiased bases in orbital angular momentum for quantum key distribution

A. Dudley, M. Mafu, S. Goyal, D. Giovannini, M. McLaren, T. Konrad, M. J. Padgett, F. Petruccione, N. Lütkenhaus, A. Forbes

Author Affiliations +

Proceedings Volume 8999, Complex Light and Optical Forces VIII; 89991I (2014) https://doi.org/10.1117/12.2038362
Event: SPIE OPTO, 2014, San Francisco, California, United States

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.

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A. Dudley, M. Mafu, S. Goyal, D. Giovannini, M. McLaren, T. Konrad, M. J. Padgett, F. Petruccione, N. Lütkenhaus, and A. Forbes "Encoding mutually unbiased bases in orbital angular momentum for quantum key distribution", Proc. SPIE 8999, Complex Light and Optical Forces VIII, 89991I (25 February 2014); https://doi.org/10.1117/12.2038362

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