Optimal eavesdropping in cryptography with three-dimensional quantum states

Abstract

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

4 pages, 2 figures

References in corpus (1)

• Security of quantum key distribution using d-level systems

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