Persistency of non-n-local correlations in noisy linear networks

Linear n-local networks are compatible with quantum-repeater-based entanglement distribution protocols. Different sources of imperfections such as error in entanglement generation, communication over noisy quantum channels, and imperfections in measurements result in decay of quantumness across such networks. From practical perspectives it becomes imperative to analyze the nonclassicality of quantum network correlations in the presence of different types of noise. The present discussion provides a formal characterization of non -n-local features of quantum correlations in a noisy network scenario. In this context, persistency of non -n-locality has been introduced. Such a notion helps in analyzing decay of non -n-local features of network correlations with increasing length of the linear network in the presence of one or more causes of imperfections.

Automated summary

This article investigates the non-n-local features of quantum network correlations in a noisy network scenario and introduces the concept of persistency of non-n-locality to analyze the decay of network correlations with increasing length of the linear network in the presence of imperfections.