Latent optical nonclassicality of conditionally prepared states

Abstract

The lack of information obtained from informationally incomplete quantum measurements can prevent the detection of quantum resources, such as optical nonclassicality. We develop a technique that overcomes this limitation for single-mode quantum states conditionally prepared through measurements on another mode of a two-mode state. This task is performed by testing steering of latent nonclassicality—a class of correlations beyond quantum entanglement and quantum discord—for which we introduce a rigorous description.