^{27}Al^{+} Quantum-Logic Clock with a Systematic Uncertainty below 10^{-18}.

Volume: 123, Issue: 3, Pages: 033201 - 033201
Published: Jul 15, 2019
Abstract
We describe an optical atomic clock based on quantum-logic spectroscopy of the ^{1}S_{0}↔^{3}P_{0} transition in ^{27}Al^{+} with a systematic uncertainty of 9.4×10^{-19} and a frequency stability of 1.2×10^{-15}/sqrt[τ]. A ^{25}Mg^{+} ion is simultaneously trapped with the ^{27}Al^{+} ion and used for sympathetic cooling and state readout. Improvements in a new trap have led to reduced secular motion heating, compared to previous ^{27}Al^{+}...
Paper Details
Title
^{27}Al^{+} Quantum-Logic Clock with a Systematic Uncertainty below 10^{-18}.
Published Date
Jul 15, 2019
Volume
123
Issue
3
Pages
033201 - 033201
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