Abstract
We present a quantum key distribution protocol based on four-level particle entanglement. Furthermore, a controlled quantum key distribution protocol is proposed using three four-level particles. We show that the two protocols are secure.
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Yan, T., Yan, F. Quantum key distribution using four-level particles. Chin. Sci. Bull. 56, 24–28 (2011). https://doi.org/10.1007/s11434-010-4208-y
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DOI: https://doi.org/10.1007/s11434-010-4208-y