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Improved frequency standard via weighted graph states
  • ISSN号：1674-1056
  • 期刊名称：Chinese Physics B
  • 时间：2012
  • 页码：100306-
  • 分类：O157.5[理学—数学;理学—基础数学] TP312[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术]
  • 作者机构：[1]Department of Physics, Southeast University, Nanjing 211189, China
  • 相关基金：Project supported by the National Natural Science Foundation of China （Grant Nos. 11004029 and 11174052）; the Natural Science Foundation of Jiangsu Province of China （Grant No. BK2010422）; the Ph. D. Program of the Ministry of Education of China; the Excellent Young Teachers Program of Southeast University; the National Basic Research Development Program of China（Grant No. 2011CB921203）
  • 相关项目：腔阵列中纠缠特性和多体问题及其在量子模拟中的应用
作者： Xue, Peng|
关键词： 图形状态, 加权图, 频率标准, 高灵敏度, 相干干涉, 压缩性, 时间演化, 量子比特, spin squeezing, weighted graph states, interferometric sensitivity
中文摘要：

We study the spin squeezing property of weighted graph states,which can be used to improve sensitivity in interferometry.We study the time evolution of spin squeezing under local decoherence acting independently on each qubit.Based on the analysis,the spin squeezing of the weighted graph states is somehow robust in the presence of decoherence and the decoherence limit in the improvement of the interferometric sensitivity is still achievable.Furthermore,one can obtain the optimal improvement of sensitivity by tuning the weighted of each edges of the weighted graph state.

英文摘要：

We study the spin squeezing property of weighted graph states,which can be used to improve sensitivity in interferometry.We study the time evolution of spin squeezing under local decoherence acting independently on each qubit.Based on the analysis,the spin squeezing of the weighted graph states is somehow robust in the presence of decoherence and the decoherence limit in the improvement of the interferometric sensitivity is still achievable.Furthermore,one can obtain the optimal improvement of sensitivity by tuning the weighted of each edges of the weighted graph state.

同期刊论文项目
腔阵列中纠缠特性和多体问题及其在量子模拟中的应用
期刊论文 45 会议论文 2
可扩展的一维及高维量子随机行走及其物理实现
期刊论文 27 会议论文 2
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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