Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1403.3711 · Physics Letters A

Tensor product extension of entanglement witnesses and their connection with measurement-device-independent entanglement witnesses

A. Rutkowski, Paweł Horodecki

Published May 28, 2014• 4 citations
arXivHTMLPDF
DOI
10.1016/j.physleta.2014.05.027

Related papers

Device-Independent Witnesses of Genuine Multipartite Entanglement

Jean-Daniel Bancal

Springer theses•Nov 22, 2013•37 citations

Demonstration of genuine multipartite entanglement with device-independent witnesses

Julio T. Barreiro, Jean-Daniel Bancal, Philipp Schindler +5 more

arXiv:1303.2433•Nature Physics•Aug 2, 2013•81 citations

Entanglement Witnesses Based on Symmetric Informationally Complete Measurements

Tao Li, Le-Min Lai, Deng-Feng Liang +2 more

arXiv:2011.01705•International Journal of Theoretical Physics•Oct 23, 2020•13 citations

Self-testing of Pauli observables for device-independent entanglement certification

Joseph Bowles, Ivan Šupić, Daniel Cavalcanti +1 more

We present self-testing protocols to certify the presence of tensor products of Pauli measurements on maximally entangled states of local dimension ${2}^{n}$ for $n\ensuremath{\in}\mathbb{N}$. This provides self-tests of sets of informationally complete measurements in arbitrarily high dimension. We then show that this can be used for the device-independent certification of the entanglement of all bipartite entangled states by exploiting a connection to measurement-device-independent entanglement witnesses and quantum networks. This work extends a more compact parallel work on the same subject [Bowles et al., Phys. Rev. Lett. 121, 180503 (2018)] and provides all the required technical proofs.

arXiv:1801.10446•Physical Review A•Oct 29, 2018•77 citations

Measurement-Device-Independent Entanglement Witness of Tripartite Entangled States and Its Applications

Zheng-Da Li, Qi Zhao, Rui Zhang +10 more

Entanglement witness is of great importance in characterizing quantum systems. The imperfections in conventional entanglement witness schemes could lead to the misidentification of a separated state as an entangled state. Measurement-device-independent entanglement witness (MDIEW) has been proposed and demonstrated to resolve the imperfect measurement devices. So far, however, the MDIEW has been restricted to a two-party qubit entangled state. Here, for the first time, we demonstrate MDIEW for multipartite entangled states. We experimentally detect the genuine entanglement and the entanglement structure of a tripartite entangled state based on an eight-photon interferometry. Furthermore, with the verified multipartite entangled state, we demonstrate quantum randomness generation and open-destination quantum key distribution in an measurement-device-independent manner. Our research presents an important step toward building a robust and secure quantum network.

Physical Review Letters•Apr 24, 2020•23 citations

Entanglement witnesses for many qubit systems

Justyna P. Zwolak, Dariusz Chru 'sci 'nski

Bulletin of the American Physical Society•Mar 21, 2013•0 citations
We present self-testing protocols to certify the presence of tensor products of Pauli measurements on maximally entangled states of local dimension 2n{2}^{n}2n for $n\ensuremath{\in}\mathbb{N}$. This provides self-tests of sets of informationally complete measurements in arbitrarily high dimension. We then show that this can be used for the device-independent certification of the entanglement of all bipartite entangled states by exploiting a connection to measurement-device-independent entanglement witnesses and quantum networks. This work extends a more compact parallel work on the same subject [Bowles et al., Phys. Rev. Lett. 121, 180503 (2018)] and provides all the required technical proofs.
Entanglement witness is of great importance in characterizing quantum systems. The imperfections in conventional entanglement witness schemes could lead to the misidentification of a separated state as an entangled state. Measurement-device-independent entanglement witness (MDIEW) has been proposed and demonstrated to resolve the imperfect measurement devices. So far, however, the MDIEW has been restricted to a two-party qubit entangled state. Here, for the first time, we demonstrate MDIEW for multipartite entangled states. We experimentally detect the genuine entanglement and the entanglement structure of a tripartite entangled state based on an eight-photon interferometry. Furthermore, with the verified multipartite entangled state, we demonstrate quantum randomness generation and open-destination quantum key distribution in an measurement-device-independent manner. Our research presents an important step toward building a robust and secure quantum network.