Cooling atoms to ultralow temperatures has produced a wealth of opportunities in
fundamental physics, precision metrology, and quantum science. The more recent …

The angular momentum of molecules, or, equivalently, their rotation in three-dimensional
space, is ideally suited for quantum control. Molecular angular momentum is naturally …

Intestinal colonization by bacteria of oral origin has been correlated with several negative
health outcomes, including inflammatory bowel disease. However, a causal role of oral …

Femtochemistry techniques have been instrumental in accessing the short time scales
necessary to probe transient intermediates in chemical reactions. In this study, we took the …

In recent years, an increasingly large variety of molecular species have been successfully
cooled to low energies, and innovative techniques continue to emerge to reach ever more …

Ultracold molecules offer unprecedented opportunities for the controlled interrogation of
molecular events, including chemical reactivity in the ultimate quantum regime. The …

The prospect of cooling matter down to temperatures that are close to absolute zero raises
intriguing questions about how chemical reactivity changes under these extreme conditions …

Chemical reactions typically proceed via stochastic encounters between reactants. Going
beyond this paradigm, we combined exactly two atoms in a single, controlled reaction. The …

Resonances in ultracold collisions involving heavy molecules are difficult to simulate
theoretically and have proven challenging to detect. Here we report the observation of …

The goal of the present article is to review the major developments that have led to the
current understanding of molecule–field interactions and experimental methods for …