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Multiple-Access Quantum Key Distribution Networks
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DOI：10.1109/TCOMM.2012.072612.110840.png)
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摘要
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This paper addresses multi-user quantum key distribution networks, in which any two users can mutually exchange a secret key without trusting any other nodes. The same network also supports conventional classical communications by assigning two different wavelength bands to quantum and classical signals. Time and code division multiple access (CDMA) techniques, within a passive star network, are considered. In the case of CDMA, it turns out that the optimal performance is achieved at a unity code weight. A listen-before-send protocol is then proposed to improve secret key generation rates in this case. Finally, a hybrid setup with wavelength routers and passive optical networks, which can support a large number of users, is considered and analyzed.
Keyword:
Quantum key distribution
multiple access
cryptography
期刊
IF:
8.3
论文数:
1.2W
被引数:
3.6W
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