Deeply bound ultracold molecules in an optical lattice Journal Article

Author(s): Danzl, Johannes G; Mark, Manfred J; Haller, Elmar; Gustavsson, Mattias K; Hart, Russell A; Liem, Andreas; Zellmer, Holger; Nägerl, Hanns C
Article Title: Deeply bound ultracold molecules in an optical lattice
Abstract: We demonstrate efficient transfer of ultracold molecules into a deeply bound rovibrational level of the singlet ground state potential in the presence of an optical lattice. The overall molecule creation efficiency is 25%, and the transfer efficiency to the rovibrational level |v = 73, J = 2) is above 80%. We find that the molecules in |v = 73, J = 2) are trapped in the optical lattice, and that the lifetime in the lattice is limited by optical excitation by the lattice light. The molecule trapping time for a lattice depth of 15 atomic recoil energies is about 20 ms. We determine the trapping frequency by the lattice phase and amplitude modulation technique. It will now be possible to transfer the molecules to the rovibrational ground state |v = 0, J = 0) in the presence of the optical lattice.
Keywords: Optical lattices; Rovibrational levels; Lattice depth; ultracold molecules; Optical excitations; Recoil energies; Singlet ground state; Transfer efficiency; Trapping frequency; Trapping time
Journal Title: New Journal of Physics
Volume: 11
ISSN: 1367-2630
Publisher: IOP Publishing Ltd.  
Date Published: 2009-03-14
DOI: 10.1088/1367-2630/11/5/055036
Notes: We are indebted to R Grimm for generous support and we thank S Knoop, N Boloufa, and O Dulieu for valuable discussions. We gratefully acknowledge funding by the Austrian Ministry of Science and Research (BMWF) and the Austrian Science Fund (FWF) in the form of a START prize grant. RH acknowledges support by the European Union in the form of a Marie-Curie International Incoming Fellowship (IIF).
Open access: yes (repository)