Results 1 to 10 of about 1,817 (160)
Prospects and challenges for squeezing-enhanced optical atomic clocks [PDF]
Nature Communications, 2020 Optical atomic clocks are useful tools for frequency metrology. Here the authors explore the stability of the atomic clocks and the role of the spin squeezed states for the noise reduction in these clocks.
Marius Schulte +4 more
doaj +2 more sources
New Journal of Physics, 2018 Atomic clocks use atomic transitions as frequency references. The susceptibility of the atomic transition to external fields limits clock stability and introduces systematic frequency shifts.
Nitzan Akerman, Roee Ozeri
doaj +4 more sources
Demonstration of a mobile optical clock ensemble at sea [PDF]
Nature CommunicationsAtomic clocks are at the leading edge of accuracy and precision and are essential for synchronisation of distributed critical infrastructure, position, navigation and timing, and scientific applications.
A. P. Hilton +16 more
doaj +2 more sources
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
Jun Ye, Ekkehard Peik
exaly +4 more sources
Disciplining a Rubidium Atomic Clock Based on Adaptive Kalman Filter [PDF]
SensorsRubidium atomic clocks have been used extensively in various fields, with applications such as a core component of Global Navigation Satellite Systems (GNSS). However, they exhibit inherently poor long-term stability.
Kun Liu +3 more
doaj +2 more sources
Modeling Clock Comparison Experiments to Test Special Relativity
Universe, 2023 The clock comparison experiments to test special relativity mainly include the Michelson–Morley experiment, Kennedy–Thorndike experiment, Ives–Stilwell experiment and the comparison experiment of atomic clocks in two locations.
Xiao-Yu Lu +7 more
doaj +1 more source
Evaluating Optical Clock Performance for GNSS Positioning
Sensors, 2023 Atomic clocks are highly precise timing devices used in numerous Positioning, Navigation, and Timing (PNT) applications on the ground and in outer space.
Enkhtuvshin Boldbaatar +4 more
doaj +1 more source
Indigenisation of the Quantum Clock: An Indispensable Tool for Modern Technologies
Atoms, 2023 Time and frequency (T&F) measurement with unprecedented accuracy is the backbone for several sophisticated technologies, commensurate with the evolution of human civilisation in the 20th century in terms of communication, positioning, navigation, and ...
Subhadeep De, Arijit Sharma
doaj +1 more source
The development of active optical clock
AAPPS Bulletin, 2023 The atomic clocks, whether operating at optical or microwave region, can be divided into two categories according to their working mode, namely the passive clocks and active clocks.
Jia Zhang +3 more
doaj +1 more source
Test and Analysis of Timekeeping Performance of Atomic Clock
Sensors, 2022 At present, there are few articles about the timekeeping performance of domestic atomic clocks in their moving state. In this paper, the frequency stability changes of hydrogen atomic and cesium atomic clocks in stationary and moving states are compared ...
Shuaichen Li +3 more
doaj +1 more source