纠缠光子源对于量子密钥分发系统至关重要。
Entangled photon pairs are the critical resources in quantum key distribution (QKD) system.
本文的目标是建立一个量子密钥分发实验系统。
In this thesis, we work toward to build a experimental quantum key distribution system.
首先介绍了基于EPR对的E91量子密钥分发方案。
We introduce E91 quantum key distribution scheme, which is based on EPR pair.
介绍了为验证量子密钥分发协议而设计的专用数据采集系统。
The experimental research on a stable free-space quantum key distribution system with low noise;
相位调制器与振幅调制器是连续变量量子密钥分发中不可缺少的光调制器件。
Phase modulator and amplitude modulator are both indispensable optical modulator in quantum cryptographic communication.
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。
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.
这样的一个纠缠光子源可以运用到量子密钥分发系统中，所产生的误码率可小于6%。
Such a system can be used as the source of quantum key distribution system with a bit error rate less than 6%.
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。
The quantum key distribution (QKD) using the QEAC will be robust in the quantum noisy channel without complex system.
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；
Quantum key distribution(QKD) network can be differentiated into three main categories based on different "family" of node functionalities:1)trusted relay node;
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。
As rapid progress in theory and experiment of quantum cryptography, point-to-point quantum key distribution (QKD) systems are already commercial available.
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。
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.
最后，根据量子密钥分发系统实验平台获得的实验数据，对偏振自动控制算法进行了讨论。
Finally, according to the data sampled from the experiment on the basis of experimental platform, the polarization auto-feedback control algorithm has been discussed.
提出了利用两个偏振分束器的量子密钥分发系统，有效地解决了相位调制器的偏振依赖性问题。
We present a quantum key distribution system based on two polarization beam splitters, by means of which the phase modulator's polarization dependence is cancelled out.
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。
In chapter 5, QKD network model is introduced as well as the present three major quantum communication networks in the international.
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。
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.
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。
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.
首先，在研究BB 84协议各种具体实现方法的基础上，提出了一种基于偏振编码的量子密钥分发方案，该方案仅使用一台单光子探测器。
Firstly, based on the analysis of some implementations of BB84 protocol, we developed a scheme of quantum key distribution by using polarization encoding and only one single photon detector.
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。
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.
最后用BB 84协议对量子密钥生成与分发进行了程序模拟。
The quantum key distribution of BB84 protocol is simulated on the computer at the end of the paper.
实现量子密钥的生成与分发实际上就是光场量子态的制备并进行操控的过程。
In fact, generation and distribution of quantum keys are the processes of preparing and manipulating quantum states.
实现量子密钥的生成与分发实际上就是光场量子态的制备并进行操控的过程。
In fact, generation and distribution of quantum keys are the processes of preparing and manipulating quantum states.
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