Related papers: Hierarchical certification of nonclassical network correlations

Hierarchical certification of nonclassical network correlations

URL: http://arxiv.org/abs/2306.15717v4
Date: Fri, 23 Aug 2024 14:10:56 GMT
Title: Hierarchical certification of nonclassical network correlations
Authors: Ming-Xing Luo, Xue Yang, Alejandro Pozas-Kerstjens,
Abstract summary: We derive linear and nonlinear Bell-like inequalities for networks, whose violation certifies the absence of a minimum number of classical sources in them. We insert this assumption, which leads to results more amenable to certification in experiments.
Score: 50.32788626697182
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: With the increased availability of quantum technological devices, it becomes more important to have tools to guarantee their correct nonclassical behavior. This is especially important for quantum networks, which constitute the platforms where multipartite cryptographic protocols will be implemented, and where guarantees of nonclassicality translate into security proofs. We derive linear and nonlinear Bell-like inequalities for networks, whose violation certifies the absence of a minimum number of classical sources in them. We do so, first, without assuming that nature is ultimately governed by quantum mechanics, providing a hierarchy interpolating between network nonlocality and full network nonlocality. Second we insert this assumption, which leads to results more amenable to certification in experiments.

Related papers

Guarantees on the structure of experimental quantum networks [105.13377158844727]
Quantum networks connect and supply a large number of nodes with multi-party quantum resources for secure communication, networked quantum computing and distributed sensing. As these networks grow in size, certification tools will be required to answer questions regarding their properties. We demonstrate a general method to guarantee that certain correlations cannot be generated in a given quantum network.
arXiv Detail & Related papers (2024-03-04T19:00:00Z)
Problem-Dependent Power of Quantum Neural Networks on Multi-Class Classification [83.20479832949069]
Quantum neural networks (QNNs) have become an important tool for understanding the physical world, but their advantages and limitations are not fully understood. Here we investigate the problem-dependent power of QCs on multi-class classification tasks. Our work sheds light on the problem-dependent power of QNNs and offers a practical tool for evaluating their potential merit.
arXiv Detail & Related papers (2022-12-29T10:46:40Z)
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)
An Evolutionary Pathway for the Quantum Internet Relying on Secure Classical Repeaters [64.48099252278821]
We conceive quantum networks using secure classical repeaters combined with the quantum secure direct communication principle. In these networks, the ciphertext gleaned from a quantum-resistant algorithm is transmitted using QSDC along the nodes. We have presented the first experimental demonstration of a secure classical repeater based hybrid quantum network.
arXiv Detail & Related papers (2022-02-08T03:24:06Z)
Experimental quantum key distribution certified by Bell's theorem [0.0]
cryptographic key exchange protocols traditionally rely on computational conjectures to provide security against eavesdropping attacks. quantum key distribution protocols provide information-theoretic security against such attacks. However, quantum protocols are subject to a new class of attacks exploiting implementation defects in the physical devices involved. We present here the experimental realisation of a complete quantum key distribution protocol immune to these vulnerabilities.
arXiv Detail & Related papers (2021-09-29T17:52:48Z)
Genuine network quantum nonlocality and self-testing [0.0]
We define a notion of genuine network quantum nonlocality. We show several examples of correlations that are genuine network nonlocal. In particular, we present an example of quantum self-testing which relies on the network structure.
arXiv Detail & Related papers (2021-05-26T06:05:22Z)
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)
Attacking the Quantum Internet [0.7829352305480285]
We discuss and classify attacks on quantum repeaters, which will serve roles similar to those of classical Internet routers. We point out attack vectors, then analyze attacks in terms of confidentiality, integrity and availability.
arXiv Detail & Related papers (2020-05-10T09:40:52Z)

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