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A step closer to repeaters for quantum networks

Loss of photons over long-distance connections limits the development of quantum networks, necessitating the use of quantum ‘repeater’ systems to boost signals between network nodes. Erbium ions incorporated into calcium tungstate crystals have been found to emit photons in the telecommunications frequency band that are indistinguishable from each other, and thus show promise for use in such repeaters.

This is a summary of: Ourari, S. et al. Indistinguishable telecom band photons from a single Er ion in the solid state. Nature 620, 977–981 (2023).

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doi: https://doi.org/10.1038/d41586-023-02283-4

References

  1. Wehner, S., Elkouss, D. & Hanson, R. Science 362, 303 (2018).

    Article  Google Scholar 

  2. Dibos, A. M., Raha, M., Phenicie, C. M. & Thompson, J. D. Phys. Rev. Lett. 120, 243601 (2018).

    Article  PubMed  Google Scholar 

  3. Raha, M. et al. Nature Commun. 11, 1605 (2020).

    Article  PubMed  Google Scholar 

  4. Stevenson, P. et al. Phys. Rev. B 105, 224106 (2022).

    Article  Google Scholar 

  5. Le Dantec, M. et al. Sci. Adv. 7, eabj9786 (2021).

    Article  PubMed  Google Scholar 

Download references

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