Quantum key distribution with trusted quantum relay

A trusted quantum relay is introduced to enable quantum key distribution links to form the basic legs in a quantum key distribution network. The idea is based on the well-known intercept/resend eavesdropping. The same scheme can be used to make quantum key distribution between several parties. No entanglement is required.Comment: 13 pages, Latex, one figur

Authentication and routing in simple quantum key distribution networks

We consider various issues which arise as soon as one tries to practically implement simple networks of quantum relays for QKD. In particular we discuss authentication and routing which are essential ingredients of any QKD network. This paper aims to address some gaps between quantum and networking aspects of QKD networks usually reserved to specialist in physics and computer science respectively.