Several families of entanglement criteria for multipartite quantum systems based on the generalized Wigner–Yanase skew information and variance DOI
Yan Hong, Xiang Hao, Limin Gao

et al.

Laser Physics Letters, Journal Year: 2024, Volume and Issue: 21(12), P. 125208 - 125208

Published: Nov. 6, 2024

Abstract Quantum entanglement plays a critical role in many quantum applications, but detecting entanglement, especially multipartite or high-dimensional systems, remains challenge. In this paper, we propose several families of criteria for states by the generalized Wigner–Yanase skew information I s ( ρ , X stretchy="false">) − 1 ⩽ 0 and variance. We also reveal complementary character between based on an alternative one variance through specific examples. illustrate merits these show that combination has stronger detection capability, as it is capable entangled remain unrecognized other criteria.

Language: Английский

Analysing quantum systems with randomised measurements DOI Creative Commons
Paweł Cieśliński, Satoya Imai, Jan Dziewior

et al.

Physics Reports, Journal Year: 2024, Volume and Issue: 1095, P. 1 - 48

Published: Sept. 27, 2024

Language: Английский

Citations

7
Predicting properties of quantum systems by regression on a quantum computer DOI Creative Commons
Andrey Kardashin, Yerassyl Balkybek, Vladimir V. Palyulin

et al.

Physical Review Research, Journal Year: 2025, Volume and Issue: 7(1)

Published: Feb. 25, 2025

Quantum computers can be considered as a natural means for performing machine learning tasks inherently quantum labeled data. Many techniques have been developed solving classification problems, such distinguishing between phases of matter or processes. Similarly, one consider more general problem regression, when the aim is to predict continuous labels quantifying properties states, purity entanglement. In this work, we propose method predicting properties. The based on notion parametrized circuits, and it seeks find an observable expectation which gives prediction property interest with low variance. We numerically test our approach in (i) parameter channel given its output state, (ii) entanglement two-qubit (iii) Hamiltonian ground state. results show that proposed able observables they provide highly accurate predictions properties, some cases even saturate Cramer-Rao bound, characterizes error. also compare Bayesian approach, latter prefers minimize variance, having therefore larger bias. Published by American Physical Society 2025

Language: Английский

Citations

0
Witness based nonlinear detection of quantum entanglement DOI
Yiding Wang,

Tinggui Zhang,

Xiaofen Huang

et al.

iScience, Journal Year: 2025, Volume and Issue: 28(4), P. 112174 - 112174

Published: March 11, 2025

Language: Английский

Citations

0
New partial trace inequalities and distillability of Werner states DOI Creative Commons
Pablo Costa Rico

Letters in Mathematical Physics, Journal Year: 2025, Volume and Issue: 115(3)

Published: May 4, 2025

Language: Английский

Citations

0
Enhancing collective entanglement witnesses through correlation with state purity DOI Creative Commons
Kateřina Jiráková, Antonín Černoch,

Artur Barasiński

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: July 16, 2024

This research analyzes the adverse impact of white noise on collective quantum measurements and argues that such poses a significant obstacle for otherwise straightforward deployment in communications. Our findings then suggests addressing this issue by correlating outcomes these with state purity. To test concept, support vector machine is employed to boost performance several entanglement witnesses incorporating purity into classification task distinguishing entangled states from separable ones. Furthermore, application learning allows optimize specificity detection given target value sensitivity. A response operating characteristic curve reconstructed based optimization area under calculated assess efficacy proposed model. Finally, we presented approach an experimental dataset Werner states.

Language: Английский

Citations

1
Entanglement classification and non- k -separability certification via Greenberger-Horne-Zeilinger-class fidelity DOI
Marcin Płodzień, Jan Chwedeńczuk, Maciej Lewenstein

et al.

Physical review. A/Physical review, A, Journal Year: 2024, Volume and Issue: 110(3)

Published: Sept. 23, 2024

Language: Английский

Citations

1
Several families of entanglement criteria for multipartite quantum systems based on the generalized Wigner–Yanase skew information and variance DOI
Yan Hong, Xiang Hao, Limin Gao

et al.

Laser Physics Letters, Journal Year: 2024, Volume and Issue: 21(12), P. 125208 - 125208

Published: Nov. 6, 2024

Abstract Quantum entanglement plays a critical role in many quantum applications, but detecting entanglement, especially multipartite or high-dimensional systems, remains challenge. In this paper, we propose several families of criteria for states by the generalized Wigner–Yanase skew information I s ( ρ , X stretchy="false">) − 1 ⩽ 0 and variance. We also reveal complementary character between based on an alternative one variance through specific examples. illustrate merits these show that combination has stronger detection capability, as it is capable entangled remain unrecognized other criteria.

Language: Английский

Citations

0