An Efficient Quantum Key Distribution Protocol with Dense Coding on Single Photons

• 作者: Hao Xiao Jun Zhang Mi Zhou Wencheng Hu Wenhua Huang
• 来源期刊: 计算机、材料和连续体(英文)
• 学科: 物理学
• 关键词: QUANTUM KEY DISTRIBUTION bias-BB84 DENSE coding mechanism QUANTUM DENSE KEY DISTRIBUTION single PHOTONS
• 年，卷（期）: 2019,（8）
• 页码范围: 759-775
• 页数: 17页
• 分类号: O41

摘要

Combined with the dense coding mechanism and the bias-BB84 protocol,an efficient quantum key distribution protocol with dense coding on single photons(QDKD-SP)is proposed.Compared with the BB84 or bias-BB84 protocols based on single photons,our QDKD-SP protocol has a higher capacity without increasing the difficulty of its experiment implementation as each correlated photon can carry two bits of useful information.Compared with the quantum dense key distribution(QDKD)protocol based on entangled states,our protocol is more feasible as the preparation and the measurement of a single-photon quantum state is not difficult with current technology.In addition,our QDKD-SP protocol is theoretically proved to be secure against the intercept-resend attack.