《怀化学院学报》2005年05期 加入收藏    获取最新 
 基于腔场QED和囚禁技术的量子态转移方案(英文)
 向少华;郑青云
   提出一个量子态转移的方案,该方案的实现是基于囚禁二能级粒子与单模腔场的相互作用.研究表明:当场模与囚禁粒子调谐为载波激发时,无需选择性测量,量子信息就能确定性地在腔场与囚禁粒子内态之间转移;当调谐为第一兰边带时,量子信息只能从囚禁粒子振动态传递到场模态,囚禁粒子的内态到其振动态,或单子系统态到双子系统纠缠态的单向转移.根据量子态转移方案设计了一个量子网络.最后,进行了实验上可行性分析.
【作者单位】:怀化学院物理与电子信息科学系;吕家坪中心小学 湖南 怀化418008 怀化学院信息科学研究所;湖南 怀化418008;湖南 麻阳419000
【关键词】:量子态转移;囚禁粒子;腔场 QED
【基金】:湖南省教育厅科研资助项目(05C696).
【分类号】:O413.1
【DOI】:cnki:ISSN:1671-9743.0.2005-05-019
【正文快照】:
  1 Intreduetion In the realm of quantum information theory,one ean transfer quantum inforrnation by two methods: quanturn tele脚rtatson之1,and(l uantum state transfer.The formerre企rstothefaetthatquantuminformationeanbe tele即rted from one loeationinto another through quantum ehannel with the help of loeal operation and elassieal (、〔)n飞munieation(L(芜C),but the〔lubits earryi飞the information eannot be moved.The latter refers to the faet that the qubits earry quantum information through …
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 Scheme for Implementing Quantum State Transfer in Cavity QED with Trapped Ion
 XIANG Shao-hua~(1;2) ZHENG Qing-yun~3 (1.Department of Physics and Electronic Information Science;Huaihua University;Huaihua;Hunan 418008;2.Research Inst itute of Information Science;Huaihua University;Huaihua;Hunan 418008;3.L(?)jiaping Central Primary School;Mayang;Hunan 419000)
  We propose a physical scheme for implementing quantum state transfer utilizing the interaction of a two-level trapped ion with a quantum monomode electromagnetic field within an optical cavity.The results show that by controlling the frequency of cavity field to be resonant with the carrier,quantum information can be transferred between cavity field and the internal state of the ion without the need for the selected measurement of the qubits.Quantum information may also be transmitted from the vibrational state of the ion into cavity mode,from the internal state of the ion into its vibration state, and from a single-qubit state into an entangled bipartite state by means of the measurement on the qubits when we tune the light field to the first blue sideband.A practical model of a quantum network is proposed.Finally,we analyze the experimental feasibility of the present scheme.
【Keyword】:quantum state transfer;trapped ion;cavity QED
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1向少华,郑青云; 基于腔场QED和囚禁技术的量子态转移方案(英文) [J];怀化学院学报; 2005年05期; 81-87
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