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Scientific Article
unige:124644 
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All entangled pure quantum states violate the bilocality inequality |
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| Authors | ||
| Published in | Physical Review A. 2017, vol. 96, no. 020304(R) | |
| Abstract | The nature of quantum correlations in networks featuring independent sources of entanglement remains poorly understood. Here, focusing on the simplest network of entanglement swapping, we start a systematic characterization of the set of quantum states leading to violation of the so-called "bilocality" inequality. First, we show that all possible pairs of entangled pure states can violate the inequality. Next, we derive a general criterion for violation for arbitrary pairs of mixed two-qubit states. Notably, this reveals a strong connection between the CHSH Bell inequality and the bilocality inequality, namely that any entangled state violating CHSH also violates the bilocality inequality. We conclude with a list of open questions. | |
| Identifiers | arXiv: 1702.00333 | |
| Full text | ||
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| Citation (ISO format) | GISIN, Nicolas et al. All entangled pure quantum states violate the bilocality inequality. In: Physical Review A, 2017, vol. 96, n° 020304(R). doi: 10.1103/PhysRevA.96.020304 https://archive-ouverte.unige.ch/unige:124644 |
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