Can nonclassical correlations survive in the presence of asymmetric lossy channels

摘要: Nonclassical correlations are a fundamental resource for applications involving multipartite systems. To assess nonclassicality, several different criteria can be applied to measured data. Here we compare three inequalities by applying them multi-mode twin-beam state, in which one of the two parties is transmitted through varying lossy channel. We demonstrate, both theoretically and experimentally, that asymmetry introduced losses affects ways, thus offering tool quantum optics applications.