Entangled photon pairs are the critical resources in quantum key distribution (QKD) system.
纠缠光子源对于量子密钥分发系统至关重要。
The security of QKD is guaranteed by the quantum measurement theory and quantum no cloning theorem.
量子密钥的安全性由量子测量理论和量子不可克隆定理所保证。
In this paper, we researched the communication efficiency and security of some classical QKD protocol.
本文研究了QKD经典协议的通信效率及其安全性。
The quantum key distribution (QKD) using the QEAC will be robust in the quantum noisy channel without complex system.
将量子避错码思想用于量子密钥分发，能有效克服信道中的噪声，且无需复杂的系统。
In chapter 5, QKD network model is introduced as well as the present three major quantum communication networks in the international.
第五章介绍量子密钥分发网络的层次模型及国际上现有的实现量子保密通信网络的三种主要方案。
The set up is stable and secure and it is proved that the phase can be used as coding in the free space QKD just like the polarization.
实验表明这样的系统工作稳定可靠，与偏振编码一样，相位编码也可用于自由空间的量子密钥分配。
In order to understand the quantum information processing in QKD system, complete quantum mechanics method was employed to describe QKD system.
因为QKD系统是对单量子态的操作，因此QKD系统本质上是量子力学系统。
During these years, the analysis on QKD network has become a new trend, which is used to fulfill the requirements of multi-user communication systems.
近些年来，为了满足多用户网络通信系统的需求，量子密钥分发网络的研究已经成为一个新的研究方向。
Then the principle of QKD was discussed in detail together with an introduction on the mainstream of QKD protocol and the latest QKD network research.
接着详细介绍量子密钥分发的实现原理、主流协议及量子密钥分发网络的最新研究成果。
In the new protocol we raised, QKD is used in both authentication and data encryption in order to ensure the absolute security of wireless communications.
在提出的新协议中，量子密钥分发被用于认证和数据加密当中，由此可以保证无线通信网络的绝对安全性。
As rapid progress in theory and experiment of quantum cryptography, point-to-point quantum key distribution (QKD) systems are already commercial available.
随着量子密码学在理论和实验上的飞速进展，点对点的量子密钥分发系统已经可以商用。
Quantum key distribution(QKD) network can be differentiated into three main categories based on different "family" of node functionalities:1)trusted relay node;
根据量子密钥分发网络节点功能的不同，可以将其分为三类：由信任方节点构成的网络；
Compared with the recent QKD scheme based on four-photon QEAC, the qubit efficiency of the authors' scheme increases by 16.67%, and the security is 3.5 times of it.
与最近的基于四光子避错码的克服量子信道噪声的量子密钥分发方案相比，该方案的量子比特效率提高了16.67%，密钥分发安全性是它的3.5倍。
So in this paper, the optimal situation of the decoy state protocol applied to the QKD system with heralded single photon source (HSPS) is complemented and extended.
现在诱惑态已被证明是一种可以大大提高量子密钥分发安全性能的现实可行的方法。
The QKD protocols and the available QKD system are mostly based on the point-to-point, or one-to-one network, while the real communication needs one to many, many-to-many network.
当前的量子通信协议和密钥分配系统，大多是基于点对点、一对一的单行系统，而现实中的通信网络是一对多、多对多的复杂系统。
The single-photon prompt detection can come true for high repetition-rate pulses. The applying of this detector will largely raise the code rate of the QKD, and boost the commercial use.
利用它可实现快速的单光子探测，提高量子密钥分配系统的码率，促进量子密钥分配系统的实际应用。
Due to the limit of response speed of the present single-photon detector, the code rate is still too low to come into practical use for the present quantum key distribution (QKD) system.
由于单光子探测器响应速率的限制，目前的量子密钥分配系统的码率很低，限制了它的实际应用。
As the representative of quantum cryptography, the quantum key distribution (QKD) is a successful model that the quantum information technique is applied in to the conventional communications.
以量子密钥分配为代表的量子密码术是量子信息技术应用于经典通信的成功典范。
As the representative of quantum cryptography, the quantum key distribution (QKD) is a successful model that the quantum information technique is applied in to the conventional communications.
以量子密钥分配为代表的量子密码术是量子信息技术应用于经典通信的成功典范。
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