Results 11 to 20 of about 37,255 (283)
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. This results in an exponential improvement compared to the conventional method and provides a stability of the clock scaling as $( N)^{-m/2}$ with $N$
Borregaard, Johannes +1 more
openaire +9 more sources
Atomic clocks for geodesy [PDF]
Reports on Progress in Physics, 2018 73 pages, 22 ...
Tanja E Mehlstäubler +4 more
openaire +3 more sources
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 +3 more
doaj +1 more source
A chip-scale atomic beam clock
Nature Communications, 2023 Atomic beams are a longstanding technology for atom-based sensors and clocks with widespread use in commercial frequency standards. Here, we report the demonstration of a chip-scale microwave atomic beam clock using coherent population trapping (CPT ...
Gabriela D. Martinez +5 more
doaj +1 more source
Blackbody radiation shift in strontium lattice clocks revisited
Physical Review Research, 2021 We reevaluate the blackbody radiation (BBR) induced ac-Stark shift of the strontium clock transition (5s5p)^{3}P_{0}-(5s^{2})^{1}S_{0} at 698nm used as reference in optical lattice clocks and as secondary representation of the SI unit “second.” At room ...
Ch. Lisdat +3 more
doaj +1 more source
Evaluation of BDS-2 and BDS-3 Satellite Atomic Clock Products and Their Effects on Positioning
Remote Sensing, 2021 The BeiDou Navigation Satellite System (BDS) has completed third phase construction and currently provides global services, with a mixed constellation of BDS-2 and BDS-3. The newly launched BDS-3 satellites are equipped with rubidium and passive hydrogen
Shengfeng Gu +5 more
doaj +1 more source
IEEE Access, 2022 A microwave (MW) synthesizer is a key component of high-performance coherent population trapping (CPT) atomic clocks, which are competitive candidates as miniature, low-power-consumption atomic clocks.
Minghao Yao +8 more
doaj +1 more source
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. +11 more
core +3 more sources
Gravitational Redshift Tests with Atomic Clocks and Atom Interferometers
PRX Quantum, 2021 Atomic interference experiments can probe the gravitational redshift via the internal energy splitting of atoms and thus give direct access to test the universality of the coupling between matter-energy and gravity at different spacetime points.
Fabio Di Pumpo +5 more
doaj +1 more source
Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps
Sensors, 2022 Atomic clock frequency jumps directly influence the accuracy and reliability of timekeeping systems. The necessary corrections are typically implemented by postprocessing mutual comparison data between multiple atomic clocks based on the overly strict ...
Mochi Liu +5 more
doaj +1 more source