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arXiv 1207.6345quant-ph
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利用偏振量子比特实现与测量设备无关的量子密钥分发的原理证明

Proof-of-principle demonstration of measurement-device-independent quantum key distribution using polarization qubits

T. Ferreira da Silva, D. Vitoreti, G. B. Xavier, G. C. do Amaral, G. P. Temporão, J. P. von der Weid

摘要:

我们进行了一个原理证明的演示测量设备无关的量子密钥分发(MDI-QKD)协议使用弱相干态和偏振编码量子比特在两个光纤链路的8.5公里。每个链接独立稳定对偏振漂移使用全偏振控制系统,采用两个波长复用的控制信道。一个基于线性光学的偏振贝尔状态分析仪被内置到中间站查理,它通过光纤链路连接到爱丽丝和鲍勃。利用诱饵态,计算出密钥生成速率的下限为1.04x10^-6比特/脉冲。

英文摘要:

We perform a proof-of-principle demonstration of the measurement-device-independent quantum key distribution (MDI-QKD) protocol using weak coherent states and polarization-encoded qubits over two optical fiber links of 8.5 km each. Each link was independently stabilized against polarization drifts using a full-polarization control system employing two wavelength-multiplexed control channels. A linear-optics-based polarization Bell-state analyzer was built into the intermediate station, Charlie, which is connected to both Alice and Bob via the optical fiber links. Using decoy-states, a lower bound for the secret-key generation rate of 1.04x10^-6 bits/pulse is computed.

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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