Frequency ratio measurements at 18-digit accuracy using an optical clock network
Nature, 2021 - nature.com
Atomic clocks are vital in a wide array of technologies and experiments, including tests of
fundamental physics. Clocks operating at optical frequencies have now demonstrated …
fundamental physics. Clocks operating at optical frequencies have now demonstrated …
JILA SrI optical lattice clock with uncertainty of
We report on an improved systematic evaluation of the JILA SrI optical lattice clock,
achieving a nearly identical uncertainty compared to the previous strontium record set by the …
achieving a nearly identical uncertainty compared to the previous strontium record set by the …
Search for ultralight dark matter from long-term frequency comparisons of optical and microwave atomic clocks
We search for ultralight scalar dark matter candidates that induce oscillations of the fine
structure constant, the electron and quark masses, and the quantum chromodynamics …
structure constant, the electron and quark masses, and the quantum chromodynamics …
An atomic-array optical clock with single-atom readout
Currently, the most accurate and stable clocks use optical interrogation of either a single ion
or an ensemble of neutral atoms confined in an optical lattice. Here, we demonstrate a new …
or an ensemble of neutral atoms confined in an optical lattice. Here, we demonstrate a new …
Intercontinental comparison of optical atomic clocks through very long baseline interferometry
M Pizzocaro, M Sekido, K Takefuji, H Ujihara… - Nature Physics, 2021 - nature.com
The comparison of distant atomic clocks is foundational to international timekee**, global
positioning and tests of fundamental physics. Optical-fibre links allow the most precise …
positioning and tests of fundamental physics. Optical-fibre links allow the most precise …
Reducing the instability of an optical lattice clock using multiple atomic ensembles
The stability of an optical atomic clock is a critical figure of merit for almost all clock
applications. To this end, much optical atomic clock research has focused on reducing clock …
applications. To this end, much optical atomic clock research has focused on reducing clock …
Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock
S Dörscher, N Huntemann, R Schwarz, R Lange… - Metrologia, 2021 - iopscience.iop.org
Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock - IOPscience This
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site uses cookies. By continuing to use this site you agree to our use of cookies. To find out …
Absolute frequency measurement of the 1S0–3P0 transition of 171Yb with a link to international atomic time
We report the absolute frequency measurement of the unperturbed optical clock transition 1
S 0–3 P 0 in 171 Yb performed with an optical lattice frequency standard. Traceability to the …
S 0–3 P 0 in 171 Yb performed with an optical lattice frequency standard. Traceability to the …
Excited-band coherent delocalization for improved optical lattice clock performance
We implement coherent delocalization as a tool for improving the two primary metrics of
atomic clock performance: systematic uncertainty and instability. By decreasing atomic …
atomic clock performance: systematic uncertainty and instability. By decreasing atomic …
Absolute frequency measurement of the 171Yb optical lattice clock at KRISS using TAI for over a year
H Kim, MS Heo, CY Park, DH Yu, WK Lee - Metrologia, 2021 - iopscience.iop.org
We report a measurement of the absolute frequency of the 1 S 0–3 P 0 transition in the 171
Yb optical lattice clock at KRISS (KRISS-Yb1) for 14 months, which was referenced to the SI …
Yb optical lattice clock at KRISS (KRISS-Yb1) for 14 months, which was referenced to the SI …