Transportable atomic clocks achieve laboratory precision
نویسندگان
چکیده
منابع مشابه
A Boost in Precision for Optical Atomic Clocks
T oday’s most precise atomic clocks are based on strontium, ytterbium, and other alkaline-earth (or alkaline-earth-like) atoms [1]. These elements have ultranarrow transitions at optical frequencies, providing stable and precise frequency standards for measuring time, as does the quartz oscillator in a wristwatch. Alkalineearth frequency standards are almost a thousandfold more precise than the...
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ژورنال
عنوان ژورنال: Physics Today
سال: 2020
ISSN: 0031-9228,1945-0699
DOI: 10.1063/pt.3.4496