Abstract
We propose a quantum-key-distribution protocol that enables three parties to agree at once on a shared common random bit string in the presence of an eavesdropper without use of entanglement. We prove its unconditional security and analyze the key rate.
- Received 7 August 2007
DOI:https://doi.org/10.1103/PhysRevA.76.062316
©2007 American Physical Society