Mafu, MDudley, Angela LGoyal, SGiovannini, DMcLaren, MPadgett, MJKonrad, TPetruccione, FLutkenhaus, NForbes, A2014-06-172014-06-172013-09Mafu, M, Dudley, A, Goyal, S, Giovannini, D, McLaren, M, Padgett, M.J, Konrad, T, Petruccione, F, Lutkenhaus, N and Forbes, A. 2013. Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases. Physical Review A, vol. 88, pp 032305.1- 032305.81050-2947http://journals.aps.org/pra/pdf/10.1103/PhysRevA.88.032305http://hdl.handle.net/10204/7440Copyright: 2013 American Physical Society. This is an Open Access Journal. The journal authorizes the publication of the information herewith contained. Published in Physical Review A, vol. 88, pp 032305.1- 032305.8We present an experimental study of higher-dimensional quantum key distribution protocols based on mutually unbiased bases, implemented by means of photons carrying orbital angular momentum. We perform (d + 1) mutually unbiased measurements in a classically simulated prepare-and-measure scheme and on a pair of entangled photons for dimensions ranging from d = 2 to 5. In our analysis, we pay attention to the detection efficiency and photon pair creation probability. As security measures,we determine from experimental data the average error rate, the mutual information shared between the sender and receiver, and the secret key generation rate per photon. We demonstrate that increasing the dimension leads to an increased information capacity as well as higher key generation rates per photon. However, we find that the benefit of increasing the dimension is limited by practical implementation considerations, which in our case results in deleterious effects observed beyond a dimension of d = 4.enOrbital angular momentumQuantum key distribution protocolsPhotonsKey generation rateArticleMafu, M., Dudley, A. L., Goyal, S., Giovannini, D., McLaren, M., Padgett, M., ... Forbes, A. (2013). Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases. http://hdl.handle.net/10204/7440Mafu, M, Angela L Dudley, S Goyal, D Giovannini, M McLaren, MJ Padgett, T Konrad, F Petruccione, N Lutkenhaus, and A Forbes "Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases." (2013) http://hdl.handle.net/10204/7440Mafu M, Dudley AL, Goyal S, Giovannini D, McLaren M, Padgett M, et al. Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases. 2013; http://hdl.handle.net/10204/7440.TY - Article AU - Mafu, M AU - Dudley, Angela L AU - Goyal, S AU - Giovannini, D AU - McLaren, M AU - Padgett, MJ AU - Konrad, T AU - Petruccione, F AU - Lutkenhaus, N AU - Forbes, A AB - We present an experimental study of higher-dimensional quantum key distribution protocols based on mutually unbiased bases, implemented by means of photons carrying orbital angular momentum. We perform (d + 1) mutually unbiased measurements in a classically simulated prepare-and-measure scheme and on a pair of entangled photons for dimensions ranging from d = 2 to 5. In our analysis, we pay attention to the detection efficiency and photon pair creation probability. As security measures,we determine from experimental data the average error rate, the mutual information shared between the sender and receiver, and the secret key generation rate per photon. We demonstrate that increasing the dimension leads to an increased information capacity as well as higher key generation rates per photon. However, we find that the benefit of increasing the dimension is limited by practical implementation considerations, which in our case results in deleterious effects observed beyond a dimension of d = 4. DA - 2013-09 DB - ResearchSpace DP - CSIR KW - Orbital angular momentum KW - Quantum key distribution protocols KW - Photons KW - Key generation rate LK - https://researchspace.csir.co.za PY - 2013 SM - 1050-2947 T1 - Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases TI - Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases UR - http://hdl.handle.net/10204/7440 ER -