Optimal eavesdropping in cryptography with three-dimensional quantum states.

By D. Bruß, C. Macchiavello. Physical Review Letters, 2001

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We study optimal eavesdropping in quantum cryptography with three-dimensional systems, and show that this scheme is more secure against symmetric attacks than protocols using two-dimensional states. We generalize the according eavesdropping transformation to arbitrary dimensions, and discuss the connection with optimal quantum cloning.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/aa6eacecb8d375fb8e3032001c7947447085d135