Controlled Logic Gate Based on a Four-Node Linear Hybrid Cluster State

Abstract

In the case of a large amount of computation, a situation may arise when the intermediate results of calculations need to be stored for a given time. In this work, we show how to create a hybrid atomic-field cluster state and create a controlled gate in such a way that the results of calculations are recorded under long-lived degrees of freedom of an atomic ensemble and can be stored for a long time.