Results 221 to 230 of about 100,070 (278)

Integrating quantum synchronization in future generation networks. [PDF]

Sci Rep
Nande SS, Habibie MI, Ghadimi M, Garbugli A, Kondepu K, Bassoli R, Fitzek FHP.   +6 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.
europepmc   +1 more source

A tweezer array with 6,100 highly coherent atomic qubits. [PDF]

Nature
Manetsch HJ, Nomura G, Bataille E, Lv X, Leung KH, Endres M.   +5 more
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Markovian state models uncover casein kinase 1 dynamics that govern circadian period. [PDF]

Biophys J
Ricci CG, Philpott JM, Torgrimson MR, Freeberg AM, Narasimamurthy R, Pécora de Barros E, Amaro R, Virshup DM, McCammon JA, Partch CL.   +9 more
europepmc   +1 more source

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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
openaire   +2 more sources

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
openaire   +1 more source

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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CHARACTERIZATION OF NONSTATIONARY ATOMIC CLOCKS

Fluctuation and Noise Letters, 2007
Atomic clocks are the core of a navigation system. Since an error in time results in an error in the user localization, it is fundamental that the stability is very high and constant with time. In this paper we discuss the dynamic Allan variance, or DAVAR, a representation of the time-varying stability of an atomic clock.
GALLEANI L., TAVELLA, PATRIZIA
openaire   +3 more sources