采用一个激光器通过偏振调制器快速偏振编码实现密钥分配,同时用矩阵分析的方法对系统原理进行了理论分析.指出用相位-偏振调制器可以对四种非正交偏振态光子进行编码和解码.在实验室内完成了30 km光纤保密通信,误码率<6%.实验表明该系统可用一个激光器快速编码解码实现密钥分配,具有很高的实用价值.
参考文献
| [1] | Bennett C H,Brassard G.Quantum cryptography:public key and coin tossing[C].Proceedings of the IEEE International Conference on Computer Systems and Signal Processing[M].New York:Institute of Electronics Engineers,1984.175. |
| [2] | Mo Xiaofan,Zhu Bing,Hart Zhengfu,et al.Faraday-Michelson system for quantum cryptography[J].Opt.Left.,2005,30:2632. |
| [3] | Kimura T,Nambu Y,Hatanaka T,et al.Single-photon interference over 150 km transmission using silica-based interatedoptic interferometers for quantum cryptography[J].Jpn J.of Appl.Phys.,2004,43:L1217-L1219. |
| [4] | Peng Xue,et al.Addendum to" EffiCient quantum-key-distribution scheme with nonmaximally entangled states"[J].Phys.Rev.A,2002,65(3B):022317. |
| [5] | Ursin R,et al.Free-space distribution of entanglement and single photons over 144 km[OL].http://arxiv.org/abs/quant-ph /0607182. |
| [6] | Buttler W T,et al.Daylight quantum key distribution over 1.6 km[J].Phy.Rev.Left.,2000,84:5652. |
| [7] | Li Mingming,Wang Fangqiang,Lu Yiqun,et al.A highly stable differential phase shift key distribution QKD system[J].Acta Physica Sinica (物理学报),2006,55:4642 (in Chinese). |
| [8] | Lin Yiman,Liang Ruisheng,Lu Yiqun,et al.An auto-compensating and efficient differential phase shiftquantum key distribution system[J].Acta Physica Sinica (物理学报),2007,54:3931 (in Chinese). |
| [9] | Wang Xiangbin.Beating the photon number splitting attack in practical quantum cryptography[J].Phy.Rev.Lett.,2005,94:230503. |
| [10] | Mi Jinglong,Wang Faqiang,Lin Qingqun,et al.Decoy state quantum key distribution with dual detectors heralded single photon source[J].Aeta Physica Sinica (物理学报),2007,57:0678 (in Chinese). |
| [11] | Lin Qingqun,Wang Faqiang,Mi Jinglong,et al.Deterministic quantum key distribution based on random phase coding[J].Acta Physica Sinica (物理学报),2007,56:5796 (in Chinese). |
| [12] | Chen Xia,Wang Faqiang,Lu Yiqun,et al.A phase modulated QKD system with two quantum cryptography protocols[J].Acta Physica Sinica (物理学报),2007,56:6434 (in Chinese). |
| [13] | Dagmar Bruβ.Optimal eavesdropping in quantum cryptography with six states[J].Phys.Rev.Left.,1998,81:3018. |
| [14] | Bechmann-Pasquinucci H,Gisin N.Incoherent and coherent eavesdropping in the six-state protocol of quantum crytpography[J].Phys.Rev.A,1999,59:4238. |
| [15] | Tang Zhilie,Li Ming,Wei Zhengjun,et al.The quantum key distribution system based on polarization states produced by phase modulation[J].Aeta Physica Sinica (物理学报),2005,54:2534-2539 (in Chinese). |
| [16] | Liu Xiaobao,et al.Polarization states encoded by phase modulation for high bit rate quantum key distribution[J].Phys.Lett.A,2006,358:386. |
| [17] | Yan Jixiang,Wei Guanghui,Ha Liu-zhu,et al.Matrix Optics (矩阵光学)[M].Beijing:Publishing House of Weapon Industry,1995.144-186 (in Chinese). |
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