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

• 作者: Fabio Garzia Roberto Cusani
• 来源期刊: 通讯与网络(英文)
• 学科: 工学
• 关键词: QUANTUM CRYPTOGRAPHY QUANTUM KEY Distribution
• 年，卷（期）: 2010,（3）
• 页码范围: 166-182
• 页数: 17页
• 分类号: TN91

摘要

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 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.