Results 61 to 70 of about 100,185 (141)
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
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Spin squeezing in optical lattice clocks via lattice-based QND measurements
, 2008 Quantum projection noise will soon limit the best achievable precision of optical atomic clocks based on lattice-confined neutral atoms. Squeezing the collective atomic pseudo-spin via measurement of the clock state populations during Ramsey ...
D Meiser, Jun Ye, Kuzmich A, M J Holland
core +1 more source
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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Improving the Q Factor of an Optical Atomic Clock Using Quantum Nondemolition Measurement
Physical Review X, 2020 Quantum nondemolition (QND) measurement is a remarkable tool for the manipulation of quantum systems. It allows specific information to be extracted while still preserving fragile quantum observables of the system.
William Bowden +4 more
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Subpicosecond $X$ rotations of atomic clock states
, 2018 We demonstrate subpicosecond-time-scale population transfer between the pair of hyperfine ground states of atomic rubidium using a single laser-pulse. Our scheme utilizes the geometric and dynamic phases induced during Rabi oscillation through the fine ...
Ahn, Jaewook +4 more
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The development of active optical clock
AAPPS Bulletin, 2023 The atomic clocks, whether operating at optical or microwave region, can be divided into two categories according to their working mode, namely the passive clocks and active clocks.
Jia Zhang +3 more
doaj +1 more source
An atomic clock with $10^{-18}$ instability
, 2013 Atomic clocks have been transformational in science and technology, leading to innovations such as global positioning, advanced communications, and tests of fundamental constant variation.
Beloy, K. +8 more
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Electronic system for drift clock calculation and synchronization for seafloor observatory [PDF]
, 2016 The paper describes a new electronic device that allows an easily measurement of the drift between a reference time source (usually GPS) and an atomic rubidium clock which is normally used in seafloor observatories.
Apponi, Umberto +3 more
core
Effect of shield magnetization on variations in the frequency of onboard rubidium atomic clocks
St. Petersburg Polytechnical University Journal: Physics and MathematicsIn the paper, the results of a study of the influence of the magnetic shield magnetization on the relative frequency instability of small-sized rubidium atomic clocks have been presented.
Ermak Sergey +4 more
doaj +1 more source
Non-destructive measurement of the transition probability in a Sr optical lattice clock
, 2009 We present the experimental demonstration of non-destructive probing of the 1S0-3P0 clock transition probability in an optical lattice clock with 87Sr atoms. It is based on the phase shift induced by the atoms on a weak off-resonant laser beam.
F.-L. Hong +5 more
core +2 more sources