Molecules of Fermionic Atoms in an Optical Lattice
  We create molecules from fermionic atoms in a three-dimensional optical lattice using a Feshbach resonance. In the limit of low tunnelling, the individual wells can be regarded as independent three-dimensional harmonic oscillators. The measured binding energies for varying scattering length agree excellently with the theoretical prediction for two interacting atoms in a harmonic oscillator. We demonstrate that the formation of molecules can be used to measure the occupancy of the lattice and perform thermometry. 
Thilo St\"oferle, Henning Moritz, Kenneth G\"unter, Michael K\"ohl,   Tilman Esslinger