论文标题
多方的简单证明准备和测量QKD
Simple Proof of Security of the multiparty Prepare and Measure QKD
论文作者
论文摘要
迄今为止，大多数研究都集中在两方之间的量子密钥分布（QKD）上。通常，针对多部分方案提出的QKD协议通常涉及最大纠缠状态（例如GHz）的使用，GHZ在实践中实施这很具有挑战性。本文通过量子密钥分布研究了多方通信的准备和测量版本。具有准备和测量单个量子状态的能力就足够了。多方准备和测量QKD的安全性通过利用量子误差校正和纠缠净化的众所周知的技术来证明。我们首先建立了基于纠结的版本的安全性，并通过一系列减少的进步，以达到我们等效的多方准备和测量QKD的版本。我们通过在GHz的基础上组合FTQC和经典统计信息来建立多方基于多方纠缠的版本的安全证明。然后通过等价证明了多方准备和测量QKD的条件安全性。
The majority of research to date has concentrated on the quantum key distribution (QKD) between two parties. In general, the QKD protocols proposed for the multiparty scenario often involve the usage of a maximally entangled state, such as GHZ, which is challenging to implement in practice. This paper examines the prepare and measure version of multiparty communication through quantum key distribution. It is sufficient to have the capability of preparing and measuring a single qubit state. The security of the multiparty prepare and measure QKD is demonstrated by utilizing the well-known techniques of quantum error correction and entanglement purification. We begin by establishing the security of the entangled-based version and progress through a series of reductions to arrive at our equivalent multiparty prepare and measure version of QKD. We establish the security proof of multiparty entangled-based version by combining FTQC and classical statistics on the GHZ basis. Then proved the conditional security of the multiparty prepare-and-measure QKD by the equivalency.
