Optical atomic clocks, use electronic energy levels to precisely keep track of time. A clock
based on nuclear energy levels promises a next-generation platform for precision metrology …

Atomic, molecular, and optical (AMO) physics has been at the forefront of the development of
quantum science while laying the foundation for modern technology. With the growing …

The use of correlated states and measurements promises improvements in the accuracy of
frequency metrology and the stability of atomic clocks. However, developing strategies …

We introduce the general-relativistic definition of lunar coordinate time (TCL) based on the
International Astronomical Union 2000 resolutions that provide a framework for relativistic …

Quantum state-resolved spectroscopy of the low energy thorium-229 nuclear transition was
recently achieved. The five allowed transitions within the electric quadrupole splitting …

We propose a scheme to perform optical pulses that suppress the effect of photon recoil by
three orders of magnitude compared to ordinary pulses in the Lamb-Dicke regime. We …

Optical frequency ratio measurement between optical atomic clocks is essential to precision
measurement as well as the redefinition of the second. Currently, the statistical noise in …

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We report the first absolute frequency measurements for the 5 s 5 p 3 P 0→ 5 s 6 d 3 D 1
transition at 394 nm for all the stable strontium isotopes by utilizing repumping induced …

High-accuracy optical clocks have garnered increasing attention for their potential
application in various fields, including geodesy. According to the gravitational red-shift effect …