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arXiv 1209.0435quant-phcs.CR
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无条件安全的设备无关量子密钥分发

Unconditionally secure device-independent quantum key distribution with only two devices

Jonathan Barrett, Roger Colbeck, Adrian Kent

摘要:

设备无关的量子密钥分发是指使用未表征的量子设备在两个用户之间建立共享密钥。如果一个协议是安全的,不管设备的行为如何,它都可以用来生成共享密钥,即使设备的供应商是恶意的。迄今为止,所有已知安全的设备无关的量子密钥分发协议都需要用于每个纠缠对的单独的隔离设备,这是一个显著的实际限制。我们引入一个协议,要求Alice和Bob每个人只有一个设备。虽然效率低下,我们的协议是无条件的安全对敌对供应商仅限于本地强制执行的信令约束。

英文摘要:

Device-independent quantum key distribution is the task of using uncharacterized quantum devices to establish a shared key between two users. If a protocol is secure regardless of the device behaviour, it can be used to generate a shared key even if the supplier of the devices is malicious. To date, all device-independent quantum key distribution protocols that are known to be secure require separate isolated devices for each entangled pair, which is a significant practical limitation. We introduce a protocol that requires Alice and Bob to have only one device each. Although inefficient, our protocol is unconditionally secure against an adversarial supplier limited only by locally enforced signalling constraints.

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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