Researchers demonstrate teleportation using on-demand photons from quantum dots

Phys.org  December 17, 2018
Despite recent advances, the exploitation of deterministic quantum light sources in push-button quantum teleportation schemes remains a major open challenge. An international team of researchers (Austria, Italy, Sweden) has shown that photon pairs generated on demand by a GaAs quantum dot can be used to implement a teleportation protocol whose fidelity violates the classical limit (by more than 5 SDs) for arbitrary input states. They developed 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. The results emphasize that on-demand solid-state quantum emitters are one of the most promising candidates to realize deterministic quantum teleportation in practical quantum networks…read more. Open Access TECHNICAL ARTICLE 

On-demand photon source and quantum teleportation setup. Credit: Science Advances (2018). DOI: 10.1126/sciadv.aau1255

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