Optimal eavesdropping in cryptography with three-dimensional quantum states
arXiv:quant-ph/0106126 · doi:10.1103/PhysRevLett.88.127901
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