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The dependence of fidelity on the squeezing parameter in teleportation of the squeezed coherent states
  • ISSN号：1674-1056
  • 期刊名称：《中国物理B：英文版》
  • 时间：0
  • 分类：O431[机械工程—光学工程;理学—光学;理学—物理] TG376.3[金属学及工艺—金属压力加工]
  • 作者机构：[1]State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems,Department of Electronic Engineering,Shanghai Jiao Tong University
  • 相关基金：Project supported by the National Natural Science Foundation of China （Grant Nos. 60773085, 60801051, and 60970109）, the National Natural Science Foundation of China-Korea Science and Engineering Foundation International Collaborative Research Funds （Grant Nos. 60811140346 and F01-2008-000-10021-0）, and Shanghai Jiao Tong University Participation in Research Pro- gram, China （Grant Nos. T030PRP18001 and T03013002）.
作者： 张静涛, 何广强, 任李杰, 曾贵华
关键词： 压缩相干态, 挤压参数, 隐形传输, 保真度, 量子通道, 解析表达式, 隐形传态, 远距传物, quantum teleportation, the squeezed coherent states, fidelity
中文摘要：

This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field.The fidelity between the original squeezed coherent state and the teleported one is expressed in terms of the squeezing parameter r and the quantum channel parameter(two-mode squeezed state) p.The results of analysis show that the fidelity increases with the increase of the quantum channel parameter p,while the fidelity decreases with the increase of the squeezing parameter r of the squeezed state.Thus the coherent state(r = 0) is the best quantum signal for continuous variable quantum teleportation once the quantum channel is built.

英文摘要：

This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field. The fidelity between the original squeezed coherent state and the teleported one is expressed in terms of the squeezing parameter r and the quantum channel parameter （two-mode squeezed state） p. The results of analysis show that the fidelity increases with the increase of the quantum channel parameter p, while the fidelity decreases with the increase of the squeezing parameter r of the squeezed state. Thus the coherent state （r= O） is the best quantum signal for continuous variable quantum teleportation once the quantum channel is built.

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期刊信息
  • 《中国物理B：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会和中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京 中关村 中国科学院物理研究所内
  • 邮编：100080
  • 邮箱：
  • 电话：010-82649026 82649519
  • 国际标准刊号：ISSN：1674-1056
  • 国内统一刊号：ISSN：11-5639/O4
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:406