This article reviews recent developments in tests of fundamental physics using atoms and
molecules, including the subjects of parity violation, searches for permanent electric dipole …

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 …

We present improved constraints on the coupling of ultralight bosonic dark matter to photons
based on long-term measurements of two optical frequency ratios. In these optical clock …

The last decade has seen unprecedented effort in dark matter model building at all mass
scales coupled with the design of numerous new detection strategies. Transformative …

Multiconfiguration wave function expansions combined with configuration interaction
methods are a method of choice for complex atoms where atomic state functions are …

We outline laser interferometer measurements to search for variation of the electromagnetic
fine-structure constant α and particle masses (including a nonzero photon mass). We …

Control over the motional degrees of freedom of atoms, ions, and molecules in a field-free
environment enables unrivalled measurement accuracies but has yet to be applied to highly …

Highly charged ions (HCIs) constitute a large class of atomic systems since each element
has as many ionization states as it has protons—in a sense, this extends the periodic table …

We present an all-optical mass spectrometry technique to identify trapped ions. The new
method uses laser-cooled ions to determine the mass of a cotrapped dark ion with a sub …

All evidence so far suggests that the absolute spatial orientation of an experiment never
affects its outcome. This is reflected in the standard model of particle physics by requiring all …