We review experimental progress on optical atomic clocks and frequency transfer, and
consider the prospects of using these technologies for geodetic measurements. Today …

Atomic clocks are vital in a wide array of technologies and experiments, including tests of
fundamental physics. Clocks operating at optical frequencies have now demonstrated …

We report on the realization of a fast, scalable, and high-fidelity qubit architecture, based on
Yb 171 atoms in an optical tweezer array. We demonstrate several attractive properties of …

The passage of time is tracked by counting oscillations of a frequency reference, such as
Earth's revolutions or swings of a pendulum. By referencing atomic transitions, frequency …

Rapid progress in optical atomic clock performance has advanced the frontiers of
timekeeping, metrology and quantum science,–. Despite considerable efforts, the …

We report on an improved systematic evaluation of the JILA SrI optical lattice clock,
achieving a nearly identical uncertainty compared to the previous strontium record set by the …

Quantum walks provide a framework for designing quantum algorithms that is both intuitive
and universal. To leverage the computational power of these walks, it is important to be able …

We implement imaging spectroscopy of the optical clock transition of lattice-trapped
degenerate fermionic Sr in the Mott-insulating regime, combining micron spatial resolution …

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. Here, we demonstrate a new …

摘要光钟在近20 年里发展迅速, 稳定度和系统不确定度均比当前最好的微波原子钟高出两个量
级, 目前已有10 个光学跃迁被国际计量局选定为二级秒定义并参与原子时的产生 …