Results 21 to 30 of about 40,348 (331)
Reviews of Modern Physics, 2015 Optical atomic clocks represent the state-of-the-art in the frontier of modern measurement science. In this article we provide a detailed review on the development of optical atomic clocks that are based on trapped single ions and many neutral atoms. We discuss important technical ingredients for optical clocks, and we present measurement precision and
Ludlow, Andrew D. +4 more
openaire +3 more sources
Gravitational Redshift Tests with Atomic Clocks and Atom Interferometers
PRX Quantum, 2021 Atomic interference experiments can probe the gravitational redshift via the internal energy splitting of atoms and thus give direct access to test the universality of the coupling between matter-energy and gravity at different spacetime points.
Fabio Di Pumpo +5 more
doaj +1 more source
Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps
Sensors, 2022 Atomic clock frequency jumps directly influence the accuracy and reliability of timekeeping systems. The necessary corrections are typically implemented by postprocessing mutual comparison data between multiple atomic clocks based on the overly strict ...
Mochi Liu +5 more
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Towards a Re-definition of the Second Based on Optical Atomic Clocks [PDF]
, 2015 The rapid increase in accuracy and stability of optical atomic clocks compared to the caesium atomic clock as primary standard of time and frequency asks for a future re-definition of the second in the International System of Units (SI).
Riehle, Fritz
core +2 more sources
Quantum Variational Optimization of Ramsey Interferometry and Atomic Clocks
Physical Review X, 2021 We discuss quantum variational optimization of Ramsey interferometry with ensembles of N entangled atoms, and its application to atomic clocks based on a Bayesian approach to phase estimation.
Raphael Kaubruegger +4 more
doaj +1 more source
The scientific career and contributions of Prof. Wang Yiqiu
Frontiers in Physics, 2022 This review aimed to recount the scientific career and contributions of Prof. Wang Yiqiu, as well as his contribution to the research on quantum precision measurement and cold atom physics, as a tribute to his upcoming 90th birthday.
Xuzong Chen +4 more
doaj +1 more source
Magic Wavelengths for Optical-Lattice Based Cs and Rb Active Clocks
Atoms, 2020 Active clocks could provide better stabilities during initial stages of measurements over passive clocks, in which stabilities become saturated only after long-term measurements.
Sukhjit Singh +4 more
doaj +1 more source
Frontiers in Earth Science, 2023 Determination of the Earth’s gravity field and geopotential value is one of the fundamental topics in physical geodesy. Traditional terrestrial gravity and precise leveling measurements can be used to determine the geopotential values at a local or ...
Mohammad Bagherbandi +4 more
doaj +1 more source
Coherent manipulation of atomic qubits in optical micropotentials [PDF]
, 2007 We experimentally demonstrate the coherent manipulation of atomic states in far-detuned dipole traps and registers of dipole traps based on two-dimensional arrays of microlenses.
A. Kaplan +24 more
core +2 more sources
Blackbody radiation shift assessment for a lutetium ion clock
Nature Communications, 2018 There is a continuous effort to improve the accuracy of atomic clocks. Here the authors measure the static differential scalar polarizability of Lutetium ion resonant transitions and its lower light shift from blackbody radiation makes it a promising ...
K. J. Arnold +4 more
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