Results 31 to 40 of about 2,598,112 (267)
Applied Sciences, 2020 The Zeeman shift plays an important role in the evaluation of optical lattice clocks since a strong bias magnetic field is applied for departing Zeeman sublevels and defining a quantization axis.
Xiaotong Lu +4 more
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Doubly Modulated Optical Lattice Clock: Interference and Topology [PDF]
Physical Review Letters, 2021 The quantum system under periodical modulation is the simplest path to understand the quantum non-equilibrium system, because it can be well described by the effective static Floquet Hamiltonian. Under the stroboscopic measurement, the initial phase is usually irrelevant.
Xiao-Tong Lu +7 more
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New frequency ratios with a PHz-scale atomic clock
New Journal of Physics, 2016 Atomic clocks are a tour de force when it comes to rigorous tests of measurement. The ultimate validation of one’s careful assessments is to find agreement on a given parameter with a completely independent laboratory.
J J McFerran
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An Atomic-Array Optical Clock with Single-Atom Readout
Physical Review X, 2019 Currently, the most accurate and stable clocks use optical interrogation of either a single ion or an ensemble of neutral atoms confined in an optical lattice.
Ivaylo S. Madjarov +7 more
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Experimental determination of the E2-M1 polarizability of the strontium clock transition
Physical Review Research, 2023 To operate an optical lattice clock at a fractional uncertainty below 10^{−17}, one must typically consider not only electric-dipole (E1) interaction between an atom and the lattice light field when characterizing the resulting lattice light shift of the
S. Dörscher +3 more
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A strontium lattice clock with inaccuracy and its frequency
New Journal of Physics, 2014 We have measured the absolute frequency of the optical lattice clock based on ^87 Sr at PTB with an uncertainty of $3.9\times {{10}^{-16}}$ using two caesium fountain clocks.
Stephan Falke +12 more
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Microscale whispering-gallery-mode light sources with lattice-confined atoms
Scientific Reports, 2021 Microlasers, relying on the strong coupling between active particles and optical microcavity, exhibit fundamental differences from conventional lasers, such as multi-threshold/thresholdless behavior and nonclassical photon emission.
Deshui Yu, Frank Vollmer
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Be optical lattice clocks with the fractional Stark shift up to the level of 10−19
New Journal of Physics, 2023 The energy levels and electric dipole ( $E1$ ) matrix elements of the ground state and low-lying excited states of Be atoms are calculated using the relativistic configuration interaction plus core polarization (RCICP) method. The static and dynamic $E1$
Lei Wu +4 more
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A mercury optical lattice clock at LNE-SYRTE
Journal of Physics: Conference Series, 2016 We describe the development of an optical lattice clock based on mercury and the results obtained since the 7 th SFSM. We briefly present a new solution for the cooling laser system and an improved lattice trap that allows us to interrogate a few thousand atoms in parallel.
de Sarlo, L. +3 more
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Deep Laser Cooling of Thulium Atoms to Sub-µK Temperatures in Magneto-Optical Trap
Atoms, 2023 Deep laser cooling of atoms, ions, and molecules facilitates the study of fundamental physics as well as applied research. In this work, we report on the narrow-line laser cooling of thulium atoms at the wavelength of 506.2nm with the natural linewidth ...
Daniil Provorchenko +8 more
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