103 citations · 645 across the 20 of their papers we have counts for
21 papers
Full molecular dynamics simulations of a single trapped ion in a neutral bath
Saajid Chowdhury, Ruiren Shi, Jesús Pérez-Ríos
We present full molecular dynamics simulations that explicitly incorporate the simultaneous interactions between a trapped ion and a bath of neutral atoms. In contrast to conventio…
Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly
J. Pérez-Ríos, D. B. Cassidy
Precise measurements of the metastable helium (1s)(2s) ionization energy have revealed a 9 discrepancy with QED theory that persists in isotopic measurements, suggestin…
Ion-atom-atom three-body recombination: from the cold to the thermal regime
Marjan Mirahmadi, Jesús Pérez-Ríos
We present a study on ion-atom-atom reaction A+A+B in a wide range of systems and collision energies ranging from 100K to 10K, analyzing the two possible products: mol…
The dynamics of a single trapped ion in a high density media: a stochastic approach
Mateo Londoño, Javier Madroñero, Jesús Pérez Ríos
Based on the Langevin equation, a stochastic formulation is implemented to describe the dynamics of a trapped ion in a bath of ultracold atoms, including an excess of micromotion.…
Spectroscopic characterization of the a state of aluminum monofluoride
Nicole Walter, Maximilian Doppelbauer, Silvio Marx +6
Spectroscopic studies of aluminum monofluoride (AlF) have revealed its highly favorable properties for direct laser cooling. All lines of the strong A X$^1Σ^+…
Classical threshold law for the formation of van der Waals molecules
Marjan Mirahmadi, Jesús Pérez-Ríos
We study the role of pairwise long-range interactions in the formation of van der Waals molecules through direct three-body recombination processes A + B + B AB + B,…
On the formation of van der Waals complexes through three-body recombination
Marjan Mirahmadi, Jesús Pérez-Ríos
In this work, we show that van der Waals molecules X-RG (where RG is the rare gas atom) may be created through direct three-body recombination collisions, i.e., X + RG + RG $\right…
Predicting second virial coefficients of organic and inorganic compounds using Gaussian Process Regression
Miruna T. Cretu, Jesús Pérez-Ríos
We show that by using intuitive and accessible molecular features it is possible to predict the temperature-dependent second virial coefficient of organic and inorganic compounds u…
A data-driven approach to determine dipole moments of diatomic molecules
Xiangyue Liu, Gerard Meijer, Jesús Pérez-Ríos
We present a data-driven approach for the prediction of the electric dipole moment of diatomic molecules, which is one of the most relevant molecular properties. In particular, we…
Life and death of a cold BaRb molecule inside an ultracold cloud of Rb atoms
Amir Mohammadi, Artjom Krükow, Amir Mahdian +6
We study the evolution of a single BaRb molecule while it continuously collides with ultracold Rb atoms. The initially weakly-bound molecule can undergo a sequence of elastic,…
Ultracold Molecule Assembly with Photonic Crystals
J. Pérez-Ríos, May E. Kim, Chen-Lung Hung
Photoassociation (PA) is a powerful technique to synthesize molecules directly and continuously from cold and ultracold atoms into deeply bound molecular states. In freespace, howe…
Observation of pendular butterfly Rydberg molecules
Thomas Niederprüm, Oliver Thomas, Tanita Eichert +4
Obtaining full control over the internal and external quantum states of molecules is the central goal of ultracold chemistry and allows for the study of coherent molecular dynamics…
Ultracold molecular Rydberg physics in a high density environment
Matthew T Eiles, Jesus Perez-Rios, F Robicheaux +1
Sufficiently high densities in Bose-Einstein condensates provide favorable conditions for the production of ultralong-range polyatomic molecules consisting of one Rydberg atom and…
Probing a scattering resonance in Rydberg molecules with a Bose-Einstein condensate
Michael Schlagmüller, Tara Cubel Liebisch, Huan Nguyen +10
We present spectroscopy of a single Rydberg atom excited within a Bose-Einstein condensate. We not only observe the density shift as discovered by Amaldi and Segre in 1934, but a l…
Energy scaling of cold atom-atom-ion three-body recombination
Artjom Krükow, Amir Mohammadi, Arne Härter +3
We study three-body recombination of Ba + Rb + Rb in the mK regime where a single Ba ion in a Paul trap is immersed into a cloud of ultracold Rb atoms. We…
Theory of long-range ultracold atom-molecule photoassociation
Jesús Pérez-Ríos, Maxence Lepers, Olivier Dulieu
The creation of ultracold molecules is currently limited to diatomic species. In this letter we present a theoretical description of the photoassociation of ultracold atoms and mol…
Quantum Defect Theory description of weakly bound levels and Feshbach resonances in LiRb
Jesús Pérez-Ríos, Sourav Dutta, Yong P. Chen +1
The multichannel quantum defect theory (MQDT) in combination with the frame transformation (FT) approach is applied to model the Fano-Feshbach resonances measured for Li$^{87…
Formation of ultracold LiRb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy
Adeel Altaf, Sourav Dutta, John Lorenz +3
We report the formation of ultracold LiRb molecules in the electronic state by photoassociation (PA) and their detection via resonantly enhanced multiphot…
Comparison of classical and quantal calculations of helium three-body recombination
Jesús Pérez-Ríos, Steve Ragole, Jia Wang +1
A general method to study classical scattering in -dimension is developed. Through classical trajectory calculations, the three-body recombination is computed as a function of t…
The Molecular Oxygen Tetramer: Intermolecular Interactions and Implications for the Solid Phase
Massimiliano Bartolomei, Estela Carmona-Novillo, Marta I. Hernández +3
Recent data have determined that the structure of the high pressure phase of solid oxygen consists of clusters composed of four O molecules. This finding has opened the que…
Ultracold + collisions in a magnetic field: on the role of the potential energy surface
Jesús Pérez-Ríos, José Campos-Martínez, Marta I. Hernández
The collision dynamics of in the presence of a magnetic field is studied within the close-coupling formalism in the range between 10 nK and 5…