A novel approach to build QKD relaying models
Quantum Key Distribution (QKD) is an unconditionally secure key-agreement scheme that promises worthwhile applications. One most critical drawback of QKD is the limitation of the range. In this paper, we present a novel idea that can be useful in the development of new effective QKD relaying models. As an illustration, we introduce two new models that are based on the proposed idea, capable of securely extending the range of original QKD schemes by using untrusted relays. Copyright (C) 2009 John Wiley & Sons, Ltd.
qkd relay model quantum key distribution (qkd) unconditional security untrusted model