Results 31 to 40 of about 100,185 (141)

Atomic fountains and optical clocks at SYRTE: status and perspectives [PDF]

, 2015
In this article, we report on the work done with the LNE-SYRTE atomic clock ensemble during the last 10 years. We cover progress made in atomic fountains and in their application to timekeeping.
Abgrall, M., Bize, S., Chupin, B., Coq, Y. Le, De Sarlo, L., Guéna, J., Laurent, Ph., Lodewyck, J., Lours, M., Rosenbusch, P., Rovera, D., Targat, R. Le   +11 more
core   +3 more sources

Feasibility of the optical fiber clock [PDF]

, 2017
We explore the feasibility of a compact high-precision Hg atomic clock based on a hollow core optical fiber. We evaluate the sensitivity of the $^1S_0$-$^3P_0$ clock transition in Hg and other divalent atoms to the fiber inner core surface at non-zero ...
Babb, James F., Derevianko, Andrei, Ilinova, Ekaterina   +2 more
core   +3 more sources

Analysis of the Long-Term Characteristics of BDS On-Orbit Satellite Atomic Clock: Since BDS-3 Was Officially Commissioned

Remote Sensing, 2022
Satellite atomic clocks are the key elements for position, navigation, and timing services of the Global navigation satellite system (GNSS); it is necessary to research the characteristics of BDS-3 on-orbit satellite atomic clocks for their further ...
Yifeng Liang, Jiangning Xu, Miao Wu, Fangneng Li   +3 more
doaj   +1 more source

Efficient atomic clocks operated with several atomic ensembles [PDF]

, 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, Sørensen, Anders S.   +1 more
core   +2 more sources

Making optical atomic clocks more stable with $10^{-16}$ level laser stabilization

, 2011
The superb precision of an atomic clock is derived from its stability. Atomic clocks based on optical (rather than microwave) frequencies are attractive because of their potential for high stability, which scales with operational frequency. Nevertheless,
A. D. Ludlow, AD Ludlow, AD Ludlow, B Young, C. W. Oates, CW Chou, CW Chou, G Santarelli, H Katori, J Millo, J Ye, J. A. Sherman, K Numata, L.-S. Ma, LS Ma, M Notcutt, MD Swallows, MM Boyd, N Nakagawa, N. D. Lemke, ND Lemke, PG Westergaard, R. W. Fox, RW Fox, S Bize, S Webster, SA Webster, ST Dawkins, T Legero, T Udem, WM Itano, Y Levin, Y. Y. Jiang   +32 more
core   +1 more source

A lab-based test of the gravitational redshift with a miniature clock network

Nature Communications, 2023
Einstein’s theory of general relativity predicts that a clock at a higher gravitational potential will tick faster than an otherwise identical clock at a lower potential, an effect known as the gravitational redshift.
Xin Zheng, Jonathan Dolde, Matthew C. Cambria, Hong Ming Lim, Shimon Kolkowitz   +4 more
doaj   +1 more source

Space-Time Reference with an Optical Link

, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul, Hollberg, Leo, Kahn, Joseph M., Taylor, Michael   +3 more
core   +1 more source

A Pseudo Random Pursuit Strategy for Atomic Clocks

IEEE Access, 2023
The atomic clock prediction algorithm is a critical part of the atomic time scale system to ensure its stability and accuracy. Random pursuit strategy (RPS) has been verified on the prediction capability of hydrogen maser and cesium clock in our previous
Qian Xu, Yu Chen, Yuzhuo Wang, Yuan Gao, Aimin Zhang   +4 more
doaj   +1 more source

Search for transient ultralight dark matter signatures with networks of precision measurement devices using a Bayesian statistics method

, 2018
We analyze the prospects of employing a distributed global network of precision measurement devices as a dark matter and exotic physics observatory. In particular, we consider the atomic clocks of the Global Positioning System (GPS), consisting of a ...
Blewitt, G., Dailey, C., Derevianko, A., Roberts, B. M.   +3 more
core   +1 more source

Investigations of laser pumped gas cell atomic frequency standard [PDF]

, 1982
The performance characteristics of a rubidium gas cell atomic frequency standard might be improved by replacing the standard rubidium discharge lamp with a single mode laser diode. Aspects of the laser pumped gas cell atomic clock studied include effects
Camparo, J. C., Fueholz, R. P., Volk, C. H.   +2 more
core   +1 more source