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Controlled quantum key distribution with three-photon polarization- entangled states via the collective noise channel

机译:通过集体噪声通道控制具有三光子偏振纠缠态的量子密钥分配

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摘要

Using three-photon polarization-entangled GHZ states or W states, we propose controlled quantum key distribution protocols for circumventing two main types of collective noise, collective dephasing noise, or collective rotation noise. Irrespective of the number of controllers, a three-photon state can generate a one-bit secret key. The storage technique of quantum states is dispensable for the controller and the receiver, and it therefore allows performing the process in a more convenient mode. If the photon cost in a security check is disregarded, then the efficiency theoretically approaches unity.
机译:使用三光子偏振纠缠的GHZ状态或W状态,我们提出了可控制的量子密钥分发协议,用于规避两种主要类型的集体噪声,集体移相噪声或集体旋转噪声。不管控制器的数量如何,三光子状态都可以生成一位秘密密钥。量子态的存储技术对于控制器和接收器是必不可少的,因此它允许以更方便的模式执行该过程。如果不考虑安全检查中的光子成本,则理论上效率接近统一。

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