Unconditional all-photonic quantum teleportation using on-demand solid-state quantum emitters

Description

All-optical quantum teleportation lies at the heart of quantum communication science and technology. This quantum phenomenon is build up around the non-local properties of entangled states of light that, in the perspective of real-life applications, should be encoded on photon-pairs generated on-demand [1, 2]. Despite recent advances, however, the exploitation of deterministic quantum light sources in unconditional quantum teleportation schemes remains a major open challenge [3, 4]. Here, we show that photon-pairs generated on-demand by a GaAs quantum dot [5] can be used to implement a teleportation protocol whose fidelity violates the classical limit (by more than 5 standard deviations) for any arbitrary input state. Moreover, we develop a theoretical framework that matches the experimental observations and that defines the degree of entanglement and indistinguishability needed to overcome the classical limit independently of the input state. Our results emphasize that deterministic quantum emitters based on the solid-state are one of the most promising candidates to implement quantum teleportation in practical quantum networks.

Period	27 Sept 2018
Event title	14th International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 14)
Event type	Conference
Location	GermanyShow on map