6 papers
Self-limiting electrostriction of a single ion in an ultracold polar gas: From mesoscopic ions to crystalline molecular rings
Ruiren Shi, Saajid Chowdhury, Leon Karpa +1
We investigate the self-assembly of polar molecules around a single ion immersed in an ultracold, dilute two-dimensional molecular gas. The ion aligns and attracts the molecules th…
Electric-field control of atom-molecule Feshbach resonances
Mara Meyer zum Alten Borgloh, Jule Heier, Fritz von Gierke +4
Ultracold molecules provide opportunities for exploring quantum matter, chemical dynamics and information processing thanks to their rich interactions, which can be controlled by e…
Two-photon-assisted collisions in ultracold gases of polar molecules II : Optical shielding of ultracold polar molecular collisions
Gohar Hovhannesyan, Charbel Karam, Romain Vexiau +4
We theoretically investigate the collisions between ultracold polar molecules in the presence of two lasers ensuring a Raman resonant transition on individual molecules to suppress…
Optical formation of ultracold NaK ground state molecules
Baraa Shammout, Leon Karpa, Silke Ospelkaus +2
We study the rovibronic transitions in NaK between its electronic ground state and its second excited state , to identify possible pathways for the creation of u…
Ultracold Interactions between Ions and Polar Molecules
Leon Karpa, Olivier Dulieu
We propose a platform for observing and controlling the interactions between atomic ions and a quantum gas of polar molecules in the ultracold regime. This approach is based on the…
Formation of ultracold triatomic molecules by electric microwave association
Baraa Shammout, Leon Karpa, Silke Ospelkaus +2
A theoretical model is proposed for the formation of ultracold ground-state triatomic molecules in weakly bound energy levels. The process is driven by the electric component of a…