Abstract
Polarization states of a photon are the most natural degrees of freedom for encoding classical information bits. The two-dimensional space of states associated with polarization degrees of freedom of the photon is insufficient for many problems of information transfer with quantum states. We propose to use the polarization degrees of freedom of composite states of photons (polarization qutrits) for secret cryptographic key distribution.
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Original Russian Text © S.P. Kulik, S.N. Molotkov, I.V. Radchenko, 2012, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2012, Vol. 96, No. 5, pp. 367–373.
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Kulik, S.P., Molotkov, S.N. & Radchenko, I.V. Quantum key distribution on composite photons, polarization qutrits. Jetp Lett. 96, 336–341 (2012). https://doi.org/10.1134/S0021364012170080
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DOI: https://doi.org/10.1134/S0021364012170080