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Ultracold long-range van der Waals Rydberg trimer by Londoño, Mateo; Olaya-Agudelo, Vanessa C.; Herrera, Felipe; Pérez-Ríos, Jesús is a scholarly article available to read on EtoBox.

What is Ultracold long-range van der Waals Rydberg trimer about?

Rydberg molecules, Rydberg-atom or Rydberg-molecule, are an essential ingredient of cold molecular sciences. However, due to the richness of Rydberg-neutral interactions, new kinds of Rydberg molecules and binding mechanisms are still to be discovered. In this work, we predict the existence of ultra-long-range van der Waals trimers in dilute atom-gas mixtures. These are bound states of a Rydberg atom and a diatomic polar molecule mediated by the long-range van der Waals interaction. This new binding mechanism gives rise to trimers with sizes between 5-500~nm and binding energies between 2 MHz and 0.2 kHz depending on the atomic principal quantum number $n$ and orbital angular momentum $L$. We show that these molecules can be produced via two-photon photoassociation, with rates on the order of (10$^{-13}$ - 10$^{-11}$) cm$^{3}$s$^{-1}$ for temperatures in the range of (0.5 $\mu K$ - 10$\mu K$), and discuss the feasibility of observing trimer resonances.

Author

Londoño, Mateo; Olaya-Agudelo, Vanessa C.; Herrera, Felipe; Pérez-Ríos, Jesús

Published

2025

Language

EN