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Bell nonlocality in networks
Armin Tavakoli1,2, Alejandro Pozas-Kerstjens3,4, Ming-Xing Luo5,6
1Institute for Quantum Optics and Quantum Information-IQOQI Vienna, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria.
Reports on Progress in Physics. Physical Society (Great Britain)
|December 9, 2021
Summary
Bell's theorem demonstrates quantum theory's incompatibility with local models. Recent research explores network scenarios, revealing complex nonlocality beyond traditional Bell experiments.
Area of Science:
- Quantum physics
- Foundations of quantum theory
- Quantum information science
Background:
- Bell's theorem established quantum theory's conflict with local physical models.
- Nonlocality is a fundamental quantum feature impacting various predictions.
- Research has advanced to network scenarios with multiple sources and parties.
Purpose of the Study:
- To review the emerging topic of Bell nonlocality in networks.
- To discuss novel phenomena in network quantum correlations.
- To highlight conceptual and practical challenges in network nonlocality.
Main Methods:
- Analysis of sophisticated network experiments.
- Investigation of nonlocal correlations in multi-party settings.
- Review of theoretical and experimental approaches.
Main Results:
- Network scenarios exhibit phenomena absent in traditional Bell experiments.
- Nonlocal correlations in networks present significant challenges.
- Bell nonlocality extends beyond the Einstein-Podolsky-Rosen paradox.
Conclusions:
- Bell nonlocality in networks is a rapidly developing field.
- Understanding network nonlocality is crucial for quantum information science.
- Future research must address the complexities of multi-source, multi-party quantum correlations.
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