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    Long-Distance Distribution of Atom-Photon Entanglement at Telecom Wavelength

    Article obtained from Photonics RSS Feed.

    Physicists at Ludwig Maximilian University (LMU), with colleagues at Saarland University, have demonstrated the transport of an entangled state between an atom and a photon via an optical fiber over a distance of up to 20 km. According to the researchers, this is a new record for distance traveled by an atom and a photonic channel in an entangled state — the previous record was 700 meters. “The experiment represents a milestone, insofar as the distance covered confirms that quantum information can be distributed on a large scale with little loss,” professor Harald Weinfurter said.

    The researchers entangled a rubidium (Rb) atom with a photon. Following targeted excitation, the Rb atom emitted a photon with a…

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    Jan, 27 2020 |

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