| 基于超纠缠交换的量子密钥分发 |
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| 引用本文： | 冯发勇,张强. 基于超纠缠交换的量子密钥分发[J]. 物理学报, 2007, 56(4): 1924-1927 |
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| 作者姓名： | 冯发勇 张强 |
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| 作者单位： | 中国科学技术大学近代物理系，合肥 230026 |
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| 摘 要： | 给出一种基于超纠缠交换的量子密钥分发方案，这个方案可以同时产生确定密钥和随机密钥，并且它的安全性不受任何损害.这个方案只需要一对在空间(路径)模式和极化模式上超纠缠的光子就能获得4 bit的密钥(2 bit随机密钥和2 bit确定密钥).在目前的实验条件下，这个方案可以通过线性光学来实现.关键词：量子密钥分发超纠缠线性光学
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| 关 键 词： | 量子密钥分发 超纠缠 线性光学 |
| 文章编号： | 1000-3290/2007/56(04)/1924-04 |
| 收稿时间： | 2006-08-09 |
| 修稿时间： | 2006-08-09 |
Quantum key distribution based on hyperentanglement swapping |
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| Feng Fa-Yong,Zhang Qiang. Quantum key distribution based on hyperentanglement swapping[J]. Acta Physica Sinica, 2007, 56(4): 1924-1927 |
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| Authors: | Feng Fa-Yong Zhang Qiang |
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| Affiliation: | Department of Modern Physics; University of Science and Technology of China; Hefei 230026; China |
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| Abstract: | We present a quantum key distribution scheme based on hyperentanglement swapping, which can simultaneously generate deterministic and random keys without the loss of security. The scheme only requires two|photon states entangled both in spatial (path) and polarization modes, and such a photon pair can create 4 bit of secure keys (2 bit of random keys and 2 bit of deterministic keys). Our protocol can be implemented with linear optics under current technology. |
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| Keywords: | quantum key distribution hyperentanglement linear optics |
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