Title :
Analysis of Passive Optical Networks for Subcarrier Multiplexed Quantum Key Distribution
Author :
Capmany, José ; Fernández-Pousa, Carlos R.
Author_Institution :
Opt. & Quantum Commun. Group, Univ. Politec. de Valencia, Valencia, Spain
Abstract :
This paper provides an analysis of the performance of different passive optical network (PON) topologies for the distribution of multiuser quantum keys using subcarrier multiplexing and the Bennet-Brassard (BB84) protocol. PON topologies are evaluated in terms of the achievable quantum bit error rate (QBER) and the useful key rate. Results show that wavelength routed (WR) networks outperform broadcast topologies as the first are not subject to division losses. Within WR architecture the star configuration is the most efficient in terms of network scalability, maximum reachable distance and maximum useful distribution rate. The effect of subcarrier modulation index on the network performance has also been considered showing a similar and non significant impact for the range considered in this paper.
Keywords :
cryptographic protocols; error statistics; optical fibre networks; quantum cryptography; BB84 protocol; Bennet-Brassard protocol; PON topology; QBER; maximum reachable distance; maximum useful distribution rate; multiuser quantum key; network scalability; passive optical network; quantum bit error rate; quantum key distribution; star configuration; subcarrier modulation index; subcarrier multiplexing; wavelength routed network; Adaptive optics; Couplers; Multiplexing; Network topology; Optical modulation; Passive optical networks; Topology; Microwave photonics; optical fiber communications; quantum information; quantum key distribution; subcarrier multiplexing;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2010.2076671
