Certifying nonlocal properties of noisy quantum operations

作     者：Rico, Albert Morán, Moisés Bermejo Shahbeigi, Fereshte Zyczkowski, Karol 

作者机构：Faculty of Physics Astronomy and Applied Computer Science Institute of Theoretical Physics Jagiellonian University Kraków30-348 Poland Laboratoire d'Information Quantique Université libre de Bruxelles Belgium RCQI Institute of Physics Slovak Academy of Sciences Dúbravská cesta 9 Bratislava84511 Slovakia Center for Theoretical Physics Polish Academy of Science Warszawa02-668 Poland 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2024年

核心收录：

主　　题：Stochastic systems 

摘      要：We provide a unified framework to certify nonlocal properties of quantum channels from the correlations obtained in measurement protocols. Our approach gathers and extends fully- and semidevice independent methods for this purpose. We study the effect of different models of dephasing noise, some of which are shown to generate nonlocality and entanglement in special cases. In the extreme case of complete dephasing, the measurement protocols discussed yield particularly simple tests to certify nonlocality. These are based on the relations between bipartite quantum channels and their classical analogs: bipartite stochastic matrices defining conditional distributions. Copyright © 2024, The Authors. All rights reserved.