Quantum advantage by weak measurements

Weak measurements may result in extra quantity of quantumness of correlations compared with standard projective measurement on a bipartite quantum state. We show that the quantumness of correlations by weak measurements can be consumed for information encoding which is only accessible by coherent qu...

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Bibliographic Details
Published in:arXiv.org 2014-03
Main Authors: Lin-Ping, Huai, Li, Bo, Shi-Xian Qu, Fan, Heng
Format: Article
Language:English
Subjects:
Correlation analysis
Data processing
Quantum phenomena
Quantum theory
Online Access:Get full text
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Summary:Weak measurements may result in extra quantity of quantumness of correlations compared with standard projective measurement on a bipartite quantum state. We show that the quantumness of correlations by weak measurements can be consumed for information encoding which is only accessible by coherent quantum interactions. Then it can be considered as a resource for quantum information processing and can quantify this quantum advantage. We conclude that weak measurements can create more valuable quantum correlation.
ISSN:2331-8422