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Leopardi, Holly; Beloy, Kyle; Bothwell, Tobias; Brewer, Samuel M; Bromley, Sarah L; Chen, Jwo-Sy; Diddams, Scott A; Fasano, Robert J; Hassan, Youssef S; Hume, David B; Kedar, Dhruv; Kennedy, Colin J; Leibrandt, David R; Ludlow, Andrew D; McGrew, William F; Milner, William R; Nicolodi, Daniele; Oelker, Eric; Parker, Thomas E; Robinson, John M; Romisch, Stefania; Sherman, Jeff A; Sonderhouse, Lindsay; Yao, Jian; [...]

Measurement of the 27Al+ and 87Sr absolute optical frequencies

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  • Medientyp: E-Artikel
  • Titel: Measurement of the 27Al+ and 87Sr absolute optical frequencies
  • Beteiligte: Leopardi, Holly; Beloy, Kyle; Bothwell, Tobias; Brewer, Samuel M; Bromley, Sarah L; Chen, Jwo-Sy; Diddams, Scott A; Fasano, Robert J; Hassan, Youssef S; Hume, David B; Kedar, Dhruv; Kennedy, Colin J; Leibrandt, David R; Ludlow, Andrew D; McGrew, William F; Milner, William R; Nicolodi, Daniele; Oelker, Eric; Parker, Thomas E; Robinson, John M; Romisch, Stefania; Sherman, Jeff A; Sonderhouse, Lindsay; Yao, Jian; [...]
  • Erschienen: IOP Publishing, 2021
  • Erschienen in: Metrologia
  • Sprache: Nicht zu entscheiden
  • DOI: 10.1088/1681-7575/abd040
  • ISSN: 0026-1394; 1681-7575
  • Schlagwörter: General Engineering
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Abstract</jats:title> <jats:p>We perform absolute measurement of the <jats:sup>27</jats:sup>Al<jats:sup>+</jats:sup> single-ion and <jats:sup>87</jats:sup>Sr neutral lattice clock frequencies at the National Institute of Standards and Technology and JILA at the University of Colorado against a global ensemble of primary frequency standards. Over an eight month period multiple measurements yielded the mean optical atomic transition frequencies <jats:inline-formula> <jats:tex-math><?CDATA ${\nu }_{{\text{Al}}^{+}}=1\enspace 121\enspace 015\enspace 393\enspace 207\enspace 859.50\left(0.36\right)$?></jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>ν</mml:mi> </mml:mrow> <mml:mrow> <mml:msup> <mml:mrow> <mml:mtext>Al</mml:mtext> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> </mml:mrow> </mml:msup> </mml:mrow> </mml:msub> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> <mml:mspace width="0.17em" /> <mml:mn>121</mml:mn> <mml:mspace width="0.17em" /> <mml:mn>015</mml:mn> <mml:mspace width="0.17em" /> <mml:mn>393</mml:mn> <mml:mspace width="0.17em" /> <mml:mn>207</mml:mn> <mml:mspace width="0.17em" /> <mml:mn>859.50</mml:mn> <mml:mrow> <mml:mo stretchy="false">(</mml:mo> <mml:mrow> <mml:mn>0.36</mml:mn> </mml:mrow> <mml:mo stretchy="false">)</mml:mo> </mml:mrow> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="metabd040ieqn1.gif" xlink:type="simple" /> </jats:inline-formula> Hz and <jats:italic>ν</jats:italic> <jats:sub>Sr</jats:sub> = 429 228 004 229  873.19(0.15) Hz, where the stated uncertainties are dominated by statistical noise and gaps in the observation interval (‘dead-time’ uncertainty).</jats:p>