密集编码

并且把三粒子GHZ态的受控密集编码推广到（N+2）-粒子GHZ态的受控密集编码。

We also generalize controlled dense coding through three-particles GHZ states to controlled dense coding through ( N + 2 ) - particles GHZ states .

研究如何利用两粒子形成的EPR－Bel态传输光子的量子态，并提出依赖于两光子缠绕的密集编码实验设想。

We study how to teleport the quantum state of a photon using two particle EPR Bell states , and present experimental ideas of dense coding based on two photon entanglement .

然后在此基础上，设计出了基于一类w态超密集编码的量子安全直接通信方案。

And then , based on the method of superdense coding , a quantum secure direct communication scheme is raised .

实验结果表明：量子密集编码只需传送N-1个量子位便可以传递N个经典位的信息。

The experimental results show that QSDC only needs to transfer ( N-1 ) qubits during transmitting N bits classical information ;

在这个方案中，一步制备的W态可以用于实现完美的量子隐形传态和超密集编码方案。

In this scheme , a class of W states that can be used for perfect teleportation and superdense coding is generated by only one step .

利用明亮EPR光束和一种相对简洁的解码方式（Bell态直接探测），实现了无条件连续变量量子密集编码。

The unconditional dense coding for continuous variables ( cv ) was experimentally realized using the high quality bright EPR beams in which a comparatively straight decoding technique , the direct detection of Bell state , was applied .

最后详细分析和讨论了窃听者在采取被动和主动攻击情况下，方案的安全性3.提出了三粒子一类W态在非对称信道中的量子密集编码方案。

Finally , the security of the scheme is analyzed and discussed on the condition that the eavesdropper takes active and passive attacks on the scheme . 3 . A quantum dense coding scheme in non-symmetric channel is proposed by using a class of three-particle W-state .

此方案不受原子退相位噪声的影响，且光子的损失只影响实验的成功率，不影响保真度。（2）基于腔QED系统提出了如何在无消相干空间中实现量子密集编码。

The scheme is immune to dephasing and the loss of photon only affects the successful probability but has no influence on the fidelity . ( 2 ) We propose a scheme of how to implement quantum dense coding in decoherence-free subspace based on cavity QED system .

量子通讯中另外一个重要方面就是量子密集编码。

Another aspect of quantum communication is quantum dense coding .

用偏振缠绕的光子对进行量子通讯和密集编码

Communication and dense coding via polarization - entangled photon pairs

利用二粒子非最大纠缠态的概率密集编码方案

Probabilistic Dense Coding Using Partly Pure Entangled Two-particle State

也就是，密集编码的成功的可能性等于1。

That is , successful probability of dense coding is equal to 1.2 .

利用纠缠态进行离散变量和连续变量量子密集编码。

Discrete and continuous quantum variables quantum dense coding can be realized with entangled staes .

纯态纠缠源条件下密集编码的信道容量比较

Comparison on Capacity of Dense Coding in the Case of Using a Pure Entanglement Resource

例如，实现了可控量子密集编码及量子态秘密共享等。

For example , the controlled dense coding and quantum state sharing have been experimentally realized .

并讨论了光子纠缠在量子通信中的两个方面的应用：量子远程传态和量子密集编码。

This dissertation discusses two applications of photon entanglement in quantum communication : quantum teleportation and quantum dense coding .

本文研究的重点是量子信息论中的量子纠缠的特性及其一个重要应用：量子密集编码。

This thesis is devoted to investigating characteristics of QE and one of its important applications : quantum dense coding .

提出一种利用纯的高维两粒子纠缠态实现概率量子密集编码的方案。

A scheme for probabilistic dense coding via a general pure higher-dimensional bipartite entangled state was given in this paper .

通过引入辅助粒子和进行联合么正变换，多方信息传输的密集编码以一定的概率实现。

By introducing an auxiliary particle and performing a collective unitary operation , quantum dense coding will be succeeded with certain probability .

本文主要讨论多体纠缠态的制备和量子密集编码在线性光学系统中的实现过程。

This article focuses on preparation of multi-body entangled state and implementation process of quantum dense coding in the optical system . 1 .

二体纠缠在量子信息处理中已经产生了许多有趣的没有经典对应的应用，如量子隐形传态、量子密集编码、基于纠缠态的量子密码术等。

The bipartite entanglement has involved many interesting applications without classical counterpart , such as quantum teleportation , quantum dense coding , entanglement-based cryptography .

广义上讲，它包括量子密码术、量子隐形传态、密集编码、远程量子通信以及量子通信复杂度等。

In general , quantum communication includes quantum cryptography , quantum teleportation , dense coding , long-distance quantum communication ( LQC ) and the complexity of quantum communication .

本论文给出了一种高效率、高信容的量子密钥分布模型，同时将量子密集编码推广到一般的多方高维的情况。

In this thesis , the author proposes a theoretically efficient high-capacity quantum key distribution scheme and generalizes the quantum dense coding to super dense coding between multiparty .

利用量子纠缠可以实现超密集编码、量子隐形传输、量子密钥分发等经典方法难以实现的行为，具有保密、高速和超大容量的特点。

Based on quantum entanglement , we can realize quantum dense coding , quantum teleportation , quantum cryptography and so on , which cannot be resolved by classical theory .

此外，量子信息能开发出许多经典信息所无法做到的新的信息功能，如量子隐形传态、量子密集编码等。

Furthermore , quantum information can develop a lot of new information functions that classical information doesn 't have , such as quantum teleportation , quantum dense coding , etc.

存在相位编码操作是实现密集编码的关键，构造了量子信道为三能级部分纠缠态的相位密集编码算符，并给出了存在相位编码的条件。

In the protocol of quantum dense coding by a maximally entangled state , the encoding operators are divided into two classes : the rotation operators and the shift operators .

综述量子通信领域的研究进展，介绍人们所熟知的量子隐形传态、密集编码和量子密码学，对量子通信的发展前景进行了探讨。

This article summarizes the research development in quanta communication field , introduces recessive transmission , dense encoding and cryptography of quanta , and makes a research on its developing future .

纠缠态不仅可以用来检验量子力学基础，还是处理量子信息最重要的一种资源，有许多有趣的应用，例如大家所熟知的量子隐形传态、密集编码和密钥分发。

It can not only be used to examine the basis of quantum mechanics but also has many interesting applications , such as the well-known quantum teleportation , dense coding and key distribution .

量子纠缠态作为一种量子信息处理的基本物理资源，被广泛地应用于量子计算、量子通信、量子隐形传态和量子密集编码等领域中。

Quantum entangled states , as a fundamental physical resource of quantum information processing , are extensively used in quantum computation and quantum communication , quantum teleportation , and quantum dense coding , etc.

利用量子纠缠可以实现一些经典手段无法实现的任务，如量子隐形传态、量子密集编码、基于纠缠态的量子密码术等。

By means of quantum entanglement one can achieve some tasks which can not be realized via classical methods , such as quantum teleportation , quantum dense coding and quantum cryptography and so on .