Autocompensating high-dimensional quantum cryptography by phase conjugation in optical fibers
Quantum Materials and Photonics Research Group, Department of Applied Physics, Faculty of Physics / Faculty of Optics and Optometry, University of Santiago de Compostela, Campus Vida s/n, E-15782, Santiago de Compostela, Galicia, Spain.
Published online: 20 August 2020
We present a system based on phase conjugation in optical fibers for autocompensating highdimensional quantum cryptohraphy. Phase changes and coupling effects are auto-compensated by a single loop between Alice and Bob. Bob uses a source of coherent states and next Alice attenuate them up to a single photon level and thus 1-qudit states are generated for implementing a particular QKD protocol, for instance the BB84 one, together with decoy states to detect eavesdropping attacks.
© The Authors, published by EDP Sciences, 2020
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