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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
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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
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Probing supersymmetry breaking scale with atomic clocks
Nuclear Physics B, 2023 The supersymmetry (SUSY) breaking mechanism inevitably predicts the existence of the sgoldstinos, which can play the role of wave-like dark matter. Due to the ubiquitous coupling to the electromagnetic fields, the light scalar sgoldstino dark matter can ...
Victor V. Flambaum +4 more
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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
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Efficient atomic clocks operated with several atomic ensembles [PDF]
Physical Review Letters, 2013 Atomic clocks are typically operated by locking a local oscillator (LO) to a single atomic ensemble. In this article we propose a scheme where the LO is locked to several atomic ensembles instead of one.
Borregaard, Johannes +1 more
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A review of atomic clock technology, the performance capability of present spaceborne and terrestrial atomic clocks, and a look toward the future [PDF]
, 1989 Clocks have played a strong role in the development of general relativity. The concept of the proper clock is presently best realized by atomic clocks, whose development as precision instruments has evolved very rapidly in the last decades.
Vessot, Robert F. C.
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Estimating Time from Atomic Clocks
Journal of Research of the National Bureau of Standards, 1983 A Kalman recursive algorithm for estimating time from an ensemble of atomic clocks has been developed. The algorithm allows for the addition or deletion of clocks at any time, and provides automatic error detection and correction. The observations consist of time differences between clocks and may be taken at unequally spaced time points.
Richard H. Jones, Peter V. Tryon
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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
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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
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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
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