Experimental verification of time-order-dependent correlations in three-qubit Greenberger-Horne-Zeilinger-class states
Abstract
In this paper, we investigate the genuine three-way nonlocality which is recognized as the strongest form of tripartite correlations. We consider theoretically and experimentally a series of suitable Bell-type inequalities a violation of which is sufficient for the detection of three-way nonlocality. For the generalized GHZ (gGHZ) states, it is demonstrated that they do violate tripartite Bell-type inequalities for any degree of tripartite entanglement even if they do not violate Svetlichny inequality. It implies that three-way entangled gGHZ can always exhibit genuine three-way nonlocality under the requirement of time-order-dependent principle. Furthermore, we have determined the maximal amount of noise admissible for the gGHZ states to still remain genuine three-way nonlocal.
- Publication:
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Physical Review A
- Pub Date:
- April 2019
- DOI:
- 10.1103/PhysRevA.99.042123
- arXiv:
- arXiv:1903.10737
- Bibcode:
- 2019PhRvA..99d2123B
- Keywords:
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- Quantum Physics
- E-Print:
- 9 pages, 6 figures