Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock
نویسندگان
چکیده
منابع مشابه
An Optical Lattice Clock with Spin-polarized 87Sr Atoms
We present a new evaluation of an Sr optical lattice clock using spin polarized atoms. The frequency of the 1S0 → 3P0 clock transition is found to be 429 228 004 229 873.6 Hz with a fractional accuracy of 2.6 × 10, a value that is comparable to the frequency difference between the various primary standards throughout the world. This measurement is in excellent agreement with a previous one of s...
متن کاملThe absolute frequency of the 87Sr optical clock transition
The absolute frequency of the S0–P0 clock transition of 87Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 × 10−16 represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice ...
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We present the experimental setup and first results of PTB’s transportable Sr clock. It consists of a physics package, several compact laser breadboards, and a transportable high finesse cavity for the clock laser. A comparison of the transportable system with our stationary optical lattice clock yields an instability of 2.2 × 10−15 √ s/τ for the transportable clock. The current fractional unce...
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We observe two-body loss of P0 87Sr atoms trapped in a one-dimensional optical lattice. We measure loss rate coefficients for atomic samples between 1 and 6 μK that are prepared either in a single nuclear-spin sublevel or with equal populations in two sublevels. The measured temperature and nuclear-spin preparation dependence of rate coefficients agree well with calculations and reveal that rat...
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Microwave atomic clocks have been the de facto standards for precision time and frequency metrology over the past 50 years, finding widespread use in basic scientific studies, communications, and navigation. However, with its higher operating frequency, an atomic clock based on an optical transition can be much more stable. We demonstrate an all-optical atomic clock referenced to the 1.064-peta...
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ژورنال
عنوان ژورنال: Metrologia
سال: 2021
ISSN: 0026-1394,1681-7575
DOI: 10.1088/1681-7575/abc86f