TY - JOUR
AU - Holly Leopardi
AU - Kyle Beloy
AU - Tobias Bothwell
AU - Samuel Brewer
AU - Sarah Bromley
AU - Jwo-Sy Chen
AU - Scott Diddams
AU - Robert Fasano
AU - Youssef Hassan
AU - David Hume
AU - Dhruv Kedar
AU - Colin Kennedy
AU - David Leibrandt
AU - Andrew Ludlow
AU - William McGrew
AU - William Milner
AU - Daniele Nicolodi
AU - Eric Oelker
AU - Thomas Parker
AU - John Robinson
AU - S. Romisch
AU - Jeffrey Sherman
AU - Lindsay Sonderhouse
AU - Jian Yao
AU - Jun Ye
AU - Xiaogang Zhang
AU - Tara Fortier
AB - We perform absolute measurement of the 27Al+single-ion and 87Sr 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 nu_Al+= 1 121 015 393 207 859.50(0.36)Hz and nu_Sr=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)
BT - Metrologia
DA - 2021-01
DO - 10.1088/1681-7575/abd040
IS - 1
N2 - We perform absolute measurement of the 27Al+single-ion and 87Sr 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 nu_Al+= 1 121 015 393 207 859.50(0.36)Hz and nu_Sr=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)
PY - 2021
SE - 015017
EP - 015017
T2 - Metrologia
TI - Measurement of the 27Al+ and 87Sr absolute optical frequencies
UR - http://iopscience.iop.org/article/10.1088/1681-7575/abd040
VL - 58
ER -