Simultaneous Verification of Genuine Multipartite Nonlocality and Full Network Nonlocality

• URL: http://arxiv.org/abs/2407.14871v1
• Date: Sat, 20 Jul 2024 13:17:23 GMT
• Title: Simultaneous Verification of Genuine Multipartite Nonlocality and Full Network Nonlocality
• Authors: Wang Ning-Ning, Yang Xue, Yang Yan-Han, Zhang Chao, Luo Ming-Xing, Liu Bi-Heng, Huang Yun-Feng, Li Chuan-Feng, Guo Guang-Can,
• Abstract summary: We propose the first method to verify both types of nonlocality simultaneously in a single experiment. We observe both types of nonlocality in a high fidelity photonic quantum network by violating a single network Bell inequality.
• Score: 1.2557385810845298
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Genuine multipartite nonlocality and nonlocality arising in networks composed of several independent sources have been separately investigated. While some genuinely entangled states cannot be verified by violating a single Bell-type inequality, a quantum network consisting of different sources allows for the certification of the non-classicality of all sources. In this paper, we propose the first method to verify both types of nonlocality simultaneously in a single experiment. We consider a quantum network comprising a bipartite source and a tripartite source. We demonstrate that there are quantum correlations cannot be simulated if the tripartite source distributes biseparable systems while the bipartite source distributes even stronger-than-quantum systems. These correlations can be used to verify both the genuine multipartite nonlocality of generalized Greenberger-Horne-Zeilinger states and the full network nonlocality that is stronger than all the existing results. Experimentally, we observe both types of nonlocality in a high fidelity photonic quantum network by violating a single network Bell inequality.

Related papers

• Network Nonlocality Without Entanglement Of All Sources [0.0]
  Entanglement and nonlocality are two important nonclassical features of quantum correlations. We have analyzed the relation between entanglement content of the sources and detectable non n-locality in two distinct network topologies.
  arXiv  Detail & Related papers  (2024-10-19T15:11:00Z)
• Device-independent full network nonlocality for arbitrary-party and unbounded-input scenario [0.0]
  Full network nonlocality (FNN) characterizes quantum correlations that cannot be reproduced by a local-nonlocal model. We introduce an elegant set of arbitrary-party and unbounded-input network inequalities in star-shaped and linear-chain networks. Our derivation of optimal quantum violation is fully analytic and devoid of assuming the dimension of the quantum system.
  arXiv  Detail & Related papers  (2024-09-28T17:40:34Z)
• Experimental full network nonlocality with independent sources and strict locality constraints [59.541438315564854]
  Nonlocality in networks gives rise to phenomena radically different from that in standard Bell scenarios. We experimentally observe full network nonlocality in a network where the source-independence, locality, and measurement-independence loopholes are closed. Our experiment violates known inequalities characterizing non-full network nonlocal correlations by over five standard deviations.
  arXiv  Detail & Related papers  (2023-02-05T20:03:58Z)
• Certification of non-classicality in all links of a photonic star network without assuming quantum mechanics [52.95080735625503]
  Full network nonlocality goes beyond standard nonlocality in networks by falsifying any model in which at least one source is classical. We report on the observation of full network nonlocality in a star-shaped network featuring three independent sources of photonic qubits and joint three-qubit entanglement-swapping measurements.
  arXiv  Detail & Related papers  (2022-12-19T19:00:01Z)
• Proofs of network quantum nonlocality aided by machine learning [68.8204255655161]
  We show that the family of quantum triangle distributions of [DOI40103/PhysRevLett.123.140] did not admit triangle-local models in a larger range than the original proof. We produce a large collection of network Bell inequalities for the triangle scenario with binary outcomes, which are of independent interest.
  arXiv  Detail & Related papers  (2022-03-30T18:00:00Z)
• Experimental demonstration of full network nonlocality in the bilocal scenario [0.0]
  We experimentally demonstrate full network nonlocal correlations in a network. Our results may pave the way for the use of nonlocality test in quantum communication protocols.
  arXiv  Detail & Related papers  (2022-01-17T11:49:26Z)
• Characterizing nonlocal correlations through various $n$-locality inequlities in quantum network [0.0]
  Multipartite quantum networks feature multiple independent sources. Network nonlocality has been explored when each source produces a two-qubit entangled state. We propose a new set of $n$-locality inequalities in star-network configuration.
  arXiv  Detail & Related papers  (2021-12-29T14:44:09Z)
• Single-photon nonlocality in quantum networks [55.41644538483948]
  We show that the nonlocality of single-photon entangled states can nevertheless be revealed in a quantum network made only of beamsplitters and photodetectors. Our results show that single-photon entanglement may constitute a promising solution to generate genuine network-nonlocal correlations useful for Bell-based quantum information protocols.
  arXiv  Detail & Related papers  (2021-08-03T20:13:24Z)
• Full network nonlocality [68.8204255655161]
  We introduce the concept of full network nonlocality, which describes correlations that necessitate all links in a network to distribute nonlocal resources. We show that the most well-known network Bell test does not witness full network nonlocality. More generally, we point out that established methods for analysing local and theory-independent correlations in networks can be combined in order to deduce sufficient conditions for full network nonlocality.
  arXiv  Detail & Related papers  (2021-05-19T18:00:02Z)
• Quantum nonlocality in networks can be demonstrated with an arbitrarily small level of independence between the sources [0.0]
  Quantum nonlocality can be observed in networks even in the case where every party can only perform a single measurement. This effect has been demonstrated under the assumption that all sources in the network are fully independent from each other.
  arXiv  Detail & Related papers  (2020-07-25T15:04:59Z)
• Genuine Network Multipartite Entanglement [62.997667081978825]
  We argue that a source capable of distributing bipartite entanglement can, by itself, generate genuine $k$-partite entangled states for any $k$. We provide analytic and numerical witnesses of genuine network entanglement, and we reinterpret many past quantum experiments as demonstrations of this feature.
  arXiv  Detail & Related papers  (2020-02-07T13:26:00Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.