Highly charged ions: Optical clocks and applications in fundamental physics
MG Kozlov, MS Safronova… - Reviews of Modern …, 2018 - APS
Recent developments in frequency metrology and optical clocks have been based on
electronic transitions in atoms and singly charged ions as references. The control over all …
electronic transitions in atoms and singly charged ions as references. The control over all …
Atomic clocks for geodesy
TE Mehlstäubler, G Grosche, C Lisdat… - Reports on Progress …, 2018 - iopscience.iop.org
We review experimental progress on optical atomic clocks and frequency transfer, and
consider the prospects of using these technologies for geodetic measurements. Today …
consider the prospects of using these technologies for geodetic measurements. Today …
Single-Ion Atomic Clock with Systematic Uncertainty
We experimentally investigate an optical frequency standard based on the S 1/2 2 (F= 0)→ F
7/2 2 (F= 3) electric octupole (E 3) transition of a single trapped Yb+ 171 ion. For the …
7/2 2 (F= 3) electric octupole (E 3) transition of a single trapped Yb+ 171 ion. For the …
Search for ultralight dark matter from long-term frequency comparisons of optical and microwave atomic clocks
T Kobayashi, A Takamizawa, D Akamatsu… - Physical Review Letters, 2022 - APS
We search for ultralight scalar dark matter candidates that induce oscillations of the fine
structure constant, the electron and quark masses, and the quantum chromodynamics …
structure constant, the electron and quark masses, and the quantum chromodynamics …
[HTML][HTML] Optical clock comparison for Lorentz symmetry testing
Questioning basic assumptions about the structure of space and time has greatly enhanced
our understanding of nature. State-of-the-art atomic clocks,–make it possible to precisely test …
our understanding of nature. State-of-the-art atomic clocks,–make it possible to precisely test …
176Lu+ clock comparison at the 10−18 level via correlation spectroscopy
The extreme precision of optical atomic clocks has led to an anticipated redefinition of the
second by the International System of Units. Furthermore, accuracies pushing the boundary …
second by the International System of Units. Furthermore, accuracies pushing the boundary …
A compact, transportable single-ion optical clock with 7.8 × 10−17 systematic uncertainty
A transportable optical clock based on the 4s 2 S 1/2-3d 2 D 5/2 electric quadrupole
transition at 729 nm of a single 40 Ca+ ion trapped in a mini Paul trap has been developed …
transition at 729 nm of a single 40 Ca+ ion trapped in a mini Paul trap has been developed …
Liquid-Nitrogen-Cooled Optical Clock with Systematic Uncertainty of
Y Huang, B Zhang, M Zeng, Y Hao, Z Ma, H Zhang… - Physical Review …, 2022 - APS
We present a liquid-nitrogen-cooled Ca+ optical clock with an overall systematic uncertainty
of 3.0× 10− 18. In contrast to the room-temperature Ca+ optical clock that we have reported …
of 3.0× 10− 18. In contrast to the room-temperature Ca+ optical clock that we have reported …
Toward a Transportable Optical Clock with a Systematic Uncertainty of 4.8 × 10−18
M Zeng, Y Huang, B Zhang, Y Hao, Z Ma, R Hu… - Physical Review …, 2023 - APS
We present the compact long-term nearly continuous operation of a room-temperature Ca+-
optical-clock setup towards a transportable clock, achieving an overall systematic …
optical-clock setup towards a transportable clock, achieving an overall systematic …
Enhancing divalent optical atomic clocks with the transition
Divalent atoms and ions with a singlet S ground state and triplet P excited state form the
basis of many high-precision optical atomic clocks. Along with the metastable P 0 3 clock …
basis of many high-precision optical atomic clocks. Along with the metastable P 0 3 clock …