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ATOMIC CLOCKS

Accurate and stable timekeeping

Nature Reviews Physics volume 1, pages 478–479 (2019)Cite this article

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A Publisher Correction to this article was published on 09 August 2019

This article has been updated

Atomic clocks reached a record-breaking uncertainty of less than 10−18 and the time needed to compare clocks is now less than an hour. These results push towards a possible redefinition of the second from a microwave to an optical standard.

Refers to Brewer, S. M. et al. 27Al+ quantum-logic clock with a systematic uncertainty below 10−18. Phys. Rev. Lett. 123, 033201 (2019) | Oelker E. et al. Demonstration of 4.8 × 10−17 stability at 1 s for two independent optical clocks. Nat. Photon. https://doi.org/10.1038/s41566-019-0493-4 (2019).

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  • 09 August 2019

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.

References

  1. Brewer, S. M. et al. 27Al+ quantum-logic clock with a systematic uncertainty below 10−18. Phys. Rev. Lett. 123, 033201 (2019).

  2. Oelker E. et al. Demonstration of 4.8 × 10−17 stability at 1 s for two independent optical clocks. Nat. Photon. https://doi.org/10.1038/s41566-019-0493-4 (2019).

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  1. Physics Department, University of Nevada, Reno, NV, USA

    Andrei Derevianko

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  1. Andrei Derevianko
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Correspondence to Andrei Derevianko.

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Derevianko, A. Accurate and stable timekeeping. Nat Rev Phys 1, 478–479 (2019). https://doi.org/10.1038/s42254-019-0089-4

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  • DOI: https://doi.org/10.1038/s42254-019-0089-4

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