基于超共轭Bell态和超编码的大容量量子密钥分发

IF 0.7 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS
Jie Li, Chongqiang Ye, Jian Li
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引用次数: 0

摘要

根据超共轭Bell态和超编码技术的特性,本文提出了一种高容量量子密钥分发协议,该协议具有极化和空间模式自由度(DOFs)超编码的量子位。在我们的协议中,8位信息可以在一次迭代中传输。相比之下,以前的量子密钥分发协议在一次迭代中只能传输多达4或6个比特。此外,量子存储器在我们的协议中是不必要的。我们分析了窃听次数与窃听成功率之间的关系。随着窃听信息的增加,窃听成功的概率会急剧下降。结果表明,我们的协议是安全的。最后,该协议是灵活的;每个量子位具有两个完全独立的DOF。如果一个DOF被破坏,另一个仍然可以用于传输安全信息。该协议可能在未来的量子通信领域有用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
High-capacity quantum key distribution based on hyperentangled Bell states and hyper-encoding
According to the properties of the hyperentangled Bell state and hyper-encoding technology, this paper proposes a high-capacity quantum key distribution protocol with qudits hyper-encoded in polarization and spatial mode degrees of freedom (DOFs). In our protocol, 8 bits of information can be transmitted in one iteration. In contrast, the previous quantum key distribution protocols can only transmit up to 4 or 6 bits in one iteration. Moreover, quantum memory is unnecessary in our protocol. We analyze the relationship between the amount of eavesdropping and the success rate of eavesdropping. With the increase of eavesdropping information, the eavesdropping success probability will decrease sharply. The results show that our protocol is secure. Finally, this protocol is flexible; each qubit has two completely independent DOFs. If one DOF is destroyed, the other can still be used to transmit secure information. The protocol may be useful in the future quantum communication field.
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来源期刊
International Journal of Quantum Information
International Journal of Quantum Information 物理-计算机:理论方法
CiteScore
2.20
自引率
8.30%
发文量
36
审稿时长
10 months
期刊介绍: The International Journal of Quantum Information (IJQI) provides a forum for the interdisciplinary field of Quantum Information Science. In particular, we welcome contributions in these areas of experimental and theoretical research: Quantum Cryptography Quantum Computation Quantum Communication Fundamentals of Quantum Mechanics Authors are welcome to submit quality research and review papers as well as short correspondences in both theoretical and experimental areas. Submitted articles will be refereed prior to acceptance for publication in the Journal.
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