Comparison of 4 Multi-User Passive Network Topologies for 3 Different Quantum Key Distribution

Fabio Garzia, Roberto Cusani
2010 Communications and Network  
The purpose of this paper is to compare the performance of four passive optical network topologies in implementing multi-user quantum key distribution, using 3 protocols proposed by quantum cryptography (B92, EPR, and SSP). The considered networks are the passive-star network, the optical-ring network based on the Signac interferometer, the wavelength-routed network, and the wavelength-addressed bus network. The quantum bit-error rate and sifted key rate for each of these topologies are
more » ... ologies are analysed to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determined.
doi:10.4236/cn.2010.23025 fatcat:7mx5xcbzmneldmntzcoy6fef44