Results 271 to 280 of about 40,348 (331)

Search for a Universal Temporal Drift in Atomic Clock Comparisons Beyond Standard Constant Variation Models

Francesco Bruno
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Towards fibre-like loss for photonic integration from violet to near-infrared. [PDF]

Nature
Chen HJ, Colburn K, Liu P, Yan H, Hou H, Ge J, Liu JY, Lehan P, Ji QX, Yuan Z, Bouwmeester D, Holmes C, Gates J, Blauvelt H, Vahala K.   +14 more
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A comparative study on different machine learning approaches with periodic items for the forecasting of GPS satellites clock bias. [PDF]

Sci Rep
Song L, Liu J, Wang L, Wang Z, Yuan Y.
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Prospects of a thousand-ion Sn²⁺ Coulomb-crystal clock with sub-10^-19 inaccuracy. [PDF]

Nat Commun
Leibrandt DR, Porsev SG, Cheung C, Safronova MS.   +3 more
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Transcriptional responses in feeder time-trained foragers suggest diverse interactions between the circadian clock and mushroom bodies in honey bees. [PDF]

Sci Rep
Roy T, Jain R, Brockmann A.
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ATOMIC CLOCKS AND COLD ATOM SCATTERING

Laser Spectroscopy, 2002
We demonstrate a Rb fountain clock which has a small cold collision shift that is cancelled by detuning the microwave cavity. To further enhance the stability and accuracy, we are currently developing a new state detection technique that directly measures population differences and are juggling atoms in the fountain. Fountain clocks also enable a novel
Fertig, C., Legere, R., Irfon Rees, J., Gibble, K., Kokkelmans, S.J.J.M.F., Verhaar, B.J.   +5 more
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Atomic and gravitational clocks

Nature, 1982
Atomic and gravitational clocks are governed by the laws of electrodynamics and gravity, respectively. While the strong equivalence principle (SEP) assumes that the two clocks have been synchronous at all times, recent planetary data seem to suggest a possible violation of the SEP.
V. M. Canuto, I. Goldman
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Cold atom clocks

AIP Conference Proceedings, 2001
This paper reviews recent progress on microwave clocks using laser cooled neutral atoms. With an ultra-stable cryogenic sapphire oscillator as interrogation oscillator, a cesium fountain operates at the quantum projection noise limit. With 6 105 detected atoms, the relative frequency stability δν/ν is 4 10−14τ−1/2 where τ is the integration time in ...
Y. Sortais, S. Bize, M. Abgrall
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