title: Experimental test of two-way quantum key distribution in the presence of controlled noise.
abstract: We describe the experimental test of a quantum key distribution performed with a two-way protocol without using entanglement. An individual incoherent eavesdropping is simulated and induces a variable amount of noise on the communication channel. This allows a direct verification of the agreement between theory and practice.
authors.affiliation: Dipartimento di Fisica, Università di Camerino, I-62032 Camerino, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Cerè
authors.forename: Marco
authors.initials: M
authors.lastname: Lucamarini
authors.forename: Giovanni
authors.initials: G
authors.lastname: Di Giuseppe
authors.forename: Paolo
authors.initials: P
authors.lastname: Tombesi