本文關(guān)鍵詞：基于cluster態(tài)的信道容量可控的可控量子安全直接通信方案　出處：《物理學(xué)報》2017年18期 　論文類型：期刊論文

  更多相關(guān)文章： Bell基測量 五粒子cluster態(tài) 幺正操作 可控量子安全直接通信

【摘要】：提出了一種基于五粒子cluster態(tài)的信道容量可控的可控量子安全直接通信方案.通信三方利用五粒子cluster態(tài)自身的粒子分布情況,結(jié)合誘騙光子,對粒子分別做Z基單粒子測量和Bell基測量,便可完成信道的第一次安全性檢測.通信控制方Cindy通過對手中的粒子序列隨機(jī)選用測量基(Z基或者X基)測量來決定信道容量,并通過經(jīng)典信道公布結(jié)果.發(fā)送方Alice將要發(fā)送的信息以及校檢信息用于對手中的粒子序列進(jìn)行幺正操作編碼,并插入誘騙光子后將編碼后的粒子序列發(fā)給接收方Bob并通過經(jīng)典信道告知其誘騙光子的位置信息.Bob接收到粒子序列后,按照經(jīng)典信道Alice發(fā)送的信息,結(jié)合Cindy公布的信息,剔除誘騙光子后按照一定的規(guī)則對手中的兩組粒子序列進(jìn)行Bell基測量,便可解碼完成第二次安全性檢測以及得到Alice發(fā)送的信息.通過對五粒子cluster態(tài)的糾纏結(jié)構(gòu)性質(zhì)進(jìn)行分析,闡明了五粒子cluster態(tài)在該方案中所表現(xiàn)出的特點的物理緣由.結(jié)果表明,只需變化測量基的規(guī)則和用于編碼的粒子,可以將該方案推廣成可控雙向量子安全直接通信.
[Abstract]:A controllable quantum secure direct communication scheme based on five-particle cluster state with controllable channel capacity is proposed. The three-party communication utilizes the particle distribution of the five-particle cluster state. Combined with decoy photons, the particles were measured by Z-base single particle and Bell basis, respectively. The communication controller Cindy determines the channel capacity by randomly selecting the measurement base Z or X basis to measure the particle sequence in the channel. The results are published through classical channels. The information to be sent by the sender Alice and the calibration information are used to encode the particle sequence in the hands of unitary operation. After inserting the decoded photon, the encoded particle sequence is sent to the receiver Bob and the position information of the decoded photon is informed through the classical channel. Bob receives the particle sequence. According to the information sent by the classical channel Alice, combined with the information published by Cindy, the decoy photons are eliminated and the two groups of particle sequences in the hands are measured on the basis of Bell basis according to certain rules. The second security detection and the information sent by Alice can be decoded. The entanglement structure properties of five-particle cluster state are analyzed. The physical reasons for the characteristics of the five-particle cluster state in this scheme are explained. The results show that only the rules of the measurement base and the particles used for coding need to be changed. The scheme can be extended to controllable bidirectional quantum secure direct communication.
【作者單位】： 廣東水利電力職業(yè)技術(shù)學(xué)院自動化工程系;
【基金】：廣東省自然科學(xué)基金(批準(zhǔn)號:2016a030313736)資助的課題~~
【分類號】：O413;TN918
【正文快照】： QSDC方案,該方案被稱之為“兩步方案”.同年,1引言Deng和Long[5]提出了被稱為DL-04的基于單光子量子態(tài)的一次一密QSDC方案.這兩個方案給出量子安全直接通信(quantum secure direct了QSDC方案的基本標(biāo)準(zhǔn)、構(gòu)造原理以及安全判定communication,QSDC)是在量子力學(xué)的基礎(chǔ)上條件,有

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