Protection of quantum correlations against decoherence

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• 作者：Chunfang Sun ; Zhihua Chen ; Gangcheng Wang ; Chunfeng Wu…
• 关键词：Decoherence ; Bell nonlocality ; Quantum discord
• 刊名：Quantum Information Processing
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：15
• 期：2
• 页码：773-790
• 全文大小：2,342 KB
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• 作者单位：Chunfang Sun (1) (2)
  Zhihua Chen (2) (3)
  Gangcheng Wang (1)
  Chunfeng Wu (4)
  Kang Xue (1)
  Leong Chuan Kwek (2) (5) (6)
  
  1. School of Physics, Northeast Normal University, Changchun, 130024, China
  2. Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore, 117543, Singapore
  3. Department of Science, Zhijiang College, Zhejiang University of Technology, Hangzhou, 310024, China
  4. Pillar of Engineering Product Development, Singapore University of Technology and Design, 20 Dover Drive, Singapore, 138682, Singapore
  5. Institute of Advanced Studies, Nanyang Technological University, 60 Nanyang View, Singapore, 639673, Singapore
  6. National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore, 637616, Singapore
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Mathematics
  Engineering, general
  Computer Science, general
  Characterization and Evaluation Materials
  
• 出版者：Springer Netherlands
• ISSN：1573-1332

文摘

The protection of different quantum correlations, such as Bell nonlocality, quantum discord, and geometric quantum discord as trace distance against noise, is explored. By weak measurement and quantum measurement reversal, we show that the mentioned quantum correlations can be effectively preserved probabilistically from the decoherence due to amplitude damping. The results will play an important role in the experiments using the quantum correlations as resource. Keywords Decoherence Bell nonlocality Quantum discord