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The dynamic behaviors of complementary correlations under decoherence channels
Ming-Ming Du1, Dong Wang1, Liu Ye1
1School of Physics &Material Science, Anhui University, Hefei, 230601, China.
Scientific Reports
|January 31, 2017
Summary
This study introduces Pearson correlation to identify entangled quantum states and analyze their behavior under decoherence. It explains entanglement sudden death and revival, proposing a new method to understand correlation changes during decoherence.
Area of Science:
- Quantum information science
- Quantum correlation dynamics
Background:
- Complementary correlations are crucial for understanding quantum systems.
- Identifying entangled states and their dynamics under decoherence is a key challenge.
Purpose of the Study:
- To develop an effective method for identifying entangled Bell diagonal states using Pearson correlation.
- To analyze the dynamic behavior of complementary correlations under decoherence.
- To elucidate the physical mechanisms behind sudden changes in classical and quantum correlations.
Main Methods:
- Utilizing Pearson correlation as a measure of complementary correlations.
- Investigating the behavior of these correlations in various decoherence channels.
- Proposing a threshold for entanglement identification.
Main Results:
- Pearson correlation effectively identifies entangled Bell diagonal states.
- The study explains entanglement sudden death and revival through Pearson correlation dynamics.
- A method is proposed to reveal physical mechanisms of correlation changes during decoherence.
Conclusions:
- Pearson correlation provides a robust tool for analyzing quantum correlations and entanglement dynamics.
- The proposed methods offer insights into the fragility and resilience of quantum correlations under environmental interactions.
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