Frequency Measurements of Superradiance from the Strontium Clock Transition

Matthew A. Norcia*, Julia R.K. Cline, Juan A. Muniz, John M. Robinson, Ross B. Hutson, Akihisa Goban, G. Edward Marti, Jun Ye, James K. Thompson

*この研究の対応する著者

研究成果: Article査読

44 被引用数 (Scopus)

抄録

We present the first characterization of the spectral properties of superradiant light emitted from the ultranarrow, 1-mHz-linewidth optical clock transition in an ensemble of cold Sr87 atoms. Such a light source has been proposed as a next-generation active atomic frequency reference, with the potential to enable high-precision optical frequency references to be used outside laboratory environments. By comparing the frequency of our superradiant source to that of a state-of-the-art cavity-stabilized laser and optical lattice clock, we observe a fractional Allan deviation of 6.7(1)×10-16 at 1 s of averaging, establish absolute accuracy at the 2-Hz (4×10-15 fractional frequency) level, and demonstrate insensitivity to key environmental perturbations.

本文言語English
論文番号021036
ジャーナルPhysical Review X
8
2
DOI
出版ステータスPublished - 2018 5 9
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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