Experimental temporal quantum steering

• DOI: 10.1038/srep38076
• Publication Date: 2016-11-30T10:55:22Z
• Authors: Karol Bartkiewicz; Antonín Černoch; Karel Lemr; Adam Miranowicz; Franco Nori
• Keywords: Quantum key distribution

Abstract Temporal steering is a form of temporal correlation between the initial and final state quantum system. It analogue famous Einstein-Podolsky-Rosen (spatial) steering. We demonstrate, by measuring photon polarization, that allows two parties to verify if they have been interacting with same particle, even no information about what happened particle in measurements. This first experimental study also performed tests, based on violation inequalities, security key distribution protocols against individual attacks. Thus, these results can lead applications for secure communications engineering.