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Theory of Cold Molecules : Structure, Dynamics, Reactivity (English Version)

Welcome to the homepage of the Theomol team ! Our research consists in the development of theoretical, methodological and numerical methods to study the structure and dynamics at very low energies of atoms and small molecules in gas phase, as well as their interactions with electromagnetic fields.

Last news :

10/12/2018 : Publication in Phys. Rev. X 8, 041044 (2018) of our paper "Dipolar collisions of ultracold ground-state bosonic molecules" in collaboration with the experimental group of Dajun Wang in Hong Kong.

8-9/11/2018 : Participation of the Théomol team at the workshop GDR TheMS in Dijon.

1/11/2018 : Laurent Wiesenfeld (DR2, section 17 at CNRS) joins the laboratory and the group as a permanent member. Welcome !

16/10/2018 : Publication in Phys. Rev. Lett. 121, 163402 (2018) of the paper "Controlling the scattering length of ultracold dipolar molecules" from the Master 2 internship of Lucas Lassablière.

01/10/2018 : Lucas Lassablière starts his PhD in our team, for 3 years. Welcome !

08/08/2018 : Publication in Phys. Rev. Lett. 121, 063201 (2018) of the paper "Ultracold Rare-Earth Magnetic Atoms with an Electric Dipole Moment".

The Theomol team is composed by six permanent members, Nadia Bouloufa, Olivier Dulieu (team leader), Goulven Quéméner, Maurice Raoult, Romain Vexiau, Laurent Wiesenfeld as well as two emeritus researchers, Anne Crubellier and Eliane Luc, three PhD students, Adrien Devolder, Xiaodong Xing and Lucas Lassablière, two post-doctoral researchers, Humberto Da Silva Jr and Ting Xie, and two long-period associated researchers, Ioan Schneider and Jean-François Wyart.

The subjects tackled by the group include the formation, dynamics and control of atoms and simple molecules in thermal and quantum gases, as well as more complex systems such as triatomic molecules and molecular ions. Such few-body systems are prototypes both for theoretical models and experimental projects. The ultimate goal of such research is to achieve a complete control of such few-body systems using external electromagnetic fields, which would be accomplished through a detailed knowledge of their structure and dynamics.

One essential aspect of our team’s activity is to approach such problems both from the "structure" point of view, using quantum-chemistry and asymptotic methods, and the "dynamics" point of view, using a number of different approaches including DVR-grid methods, coupled-channel (time-independent) methods, multi-channel quantum defect theory and time-dependent wave-packet propagation methods. The development of these two complementary approaches, structure and dynamics, is one of the essential assets of our team and each year leads to several publications, the establishment of new collaborations, and offers for PhD theses, postdoctoral and Master studies.

Picture of the team : (foreground, left to right) Humberto Jr. Da Silva, Adrien Devolder, Nadia Bouloufa, Laurent Wiesenfeld, Eliane Luc ; (background, left to right) Andrea Orban, Lucas Lassablière, Romain Vexiau, Goulven Quéméner, Olivier Dulieu, Maurice Raoult, Xiaodong Xing, Ting Xie. Not present on the picture : Anne Crubellier, Jean-François Wyart, Ioan Schneider.