Optical atomic clocks represent the state of the art in the frontier of modern measurement
science. In this article a detailed review on the development of optical atomic clocks that are …

Recently invented and demonstrated optical lattice clocks hold great promise for improving
the precision of modern time keeping. These clocks aim at the 10-18 fractional accuracy …

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 …

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 …

Neutral atom arrays are a rapidly developing platform for quantum science. Recently,
alkaline earth atoms (AEAs) have attracted interest because their unique level structure …

Optical atomic clocks, due to their unprecedented stability,–and uncertainty,,–, are already
being used to test physical theories, and herald a revision of the International System of …

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 …

Progress in atomic, optical and quantum science, has led to rapid improvements in atomic
clocks. At the same time, atomic clock research has helped to advance the frontiers of …

Atomic clocks have been instrumental in science and technology, leading to innovations
such as global positioning, advanced communications, and tests of fundamental constant …

We demonstrate high-fidelity repetitive measurements of nuclear spin qubits in an array of
neutral ytterbium-171 (171 Yb) atoms. We show that the qubit state can be measured with a …