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arXiv 0905.2030quant-ph
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双轨位移光子态量子密钥分发协议的性能

Performance of Quantum Key Distribution Protocol with Dual-Rail Displaced Photon States

Sergey A. Podoshvedov

摘要:

提出了一种基于双轨位移光子态的量子密钥分发(QKD)方案。位移单光子态携带可提取的编码比特值,而相干态不携带任何信息,只提供不确定的结果。开发的QKD协议与实验伴随噪声一起工作,以观察恶意Eve的存在。与依赖于微弱激光脉冲的常规QKD不同,使用具有大振幅的脉冲,其可以将其近似于标准电信通信,并且即使在具有高衰减的设置中也可以显示出对窃听的抵抗力。信息泄漏到窃听者是从比较的输出分布的结果与理想的一个,这是由两个额外的不可访问的人定义的,保存谁发送脉冲,参数。一些可能的窃听攻击的鲁棒性。

英文摘要:

We propose a scheme for quantum key distribution (QKD) protocol with dual-rail displaced photon states. Displaced single photon states carry bit value of code which may be extracted while coherent states carry nothing and they only provide inconclusive outcome. Developed QKD protocol works with experimental attendant noise to observe presence of malicious Eve. Pulses with large amplitudes unlike conventional QKD relying on faint laser pulses are used that may approximate it to standard telecommunication communication and may show resistance to eavesdropping even in settings with high attenuation. Information leakage to the eavesdropper is determined from comparison of output distribution of the outcomes with ideal one that is defined by two additional inaccessible to nobody, saving for who sends the pulses, parameters. Robustness to some possible eavesdropping attacks is shown.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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