Quantum control of reactions and collisions at ultralow temperatures

Abstract

At nearly absolute zero temperature, molecular reactions and collisions are completely governed by quantum mechanics and can be exquisitely controlled by external fields.

Ultracold Sticky Collisions: Theoretical and Experimental Status

“…Recent reviews have treated the creation of ultracold molecules and the general understanding of cold collisions. − Here, we focus specifically on sticky collisions. We give an overview of recent experimental and theoretical results and discuss possible solutions for the large disagreement between them.…”

Globally Accurate Gaussian Process Potential Energy Surface and Quantum Dynamics Studies on the Li(2S) + Na2 → LiNa + Na Reaction at Low Collision Energies

“…In recent years, preparing cold and ultracold molecules have received increasingly intensive attention owing to their important applications in quantum simulation, quantum many-body physics, quantum information processing and other cutting-edge fields [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. In the ultracold regime, the reactive collisions between molecules are mainly controlled by quantum effects such as resonances, tunneling and quantum interference, since the translational de Broglie wavelength is much larger than the range of interaction potential.…”

A neural network potential energy surface for the Li + LiNa → Li2 + Na reaction and quantum dynamics study from ultracold to thermal energies

“…In recent years, the success in cooling atoms and molecules has promoted dynamics studies of cold and ultracold chemical reactions, which has become a frontier research topic in the field of molecular reaction dynamics. 1,2 The dynamics of cold (T o 1 K) or ultracold (T o 1 mK) reactions are mainly based on quantum mechanics, and accurate quantum dynamics studies can not only deepen the understanding of these chemical reactions, but also have important significance in revealing the mechanism of chemical reactions at room temperature. The triatomic and tetratomic reaction systems of alkali metals have received extensive attention in the experimental and theoretical research of ultracold reactions due to their simple electronic structure and unique reaction characteristics.…”