Abstract：
:The accuracy of state-of-the-art atomic clocks is derived from the insensitivity of narrow optical atomic resonances to environmental perturbations. Two such resonances in singly ionized lutetium have been identified with potentially lower sensitivities compared to other clock candidates. Here we report measurement of the most significant unknown atomic property of both transitions, the static differential scalar polarizability. From this, the fractional blackbody radiation shift for one of the transitions is found to be -1.36(9) × 10-18 at 300 K, the lowest of any established optical atomic clock. In consideration of leading systematic effects common to all ion clocks, both transitions compare favorably to the most accurate ion-based clocks reported to date. This work firmly establishes Lu+ as a promising candidate for a future generation of more accurate optical atomic clocks.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Arnold KJ,Kaewuam R,Roy A,Tan TR,Barrett MDdoi
10.1038/s41467-018-04079-xsubject
Has Abstractpub_date
2018-04-25 00:00:00pages
1650issue
1issn
2041-1723pii
10.1038/s41467-018-04079-xjournal_volume
9pub_type
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