Controlled production of subradiant states of a diatomic molecule in an optical lattice.
We report the successful production of subradiant states of a two-atom system in a three-dimensional optical lattice starting from doubly occupied sites in a Mott insulator phase of a quantum gas of atomic ytterbium. We can selectively produce either a subradiant 1(g) state or a superradiant 0(u) state by choosing the excitation laser frequency. The inherent weak excitation rate for the subradiant 1(g) state is overcome by the increased atomic density due to the tight confinement in a three-dimensional optical lattice. Our experimental measurements of binding energies, linewidth, and Zeeman shift confirm the observation of subradiant levels of the 1(g) state of the Yb(2) molecule.
Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Yosuke
Y
Takasu
Yutaka
Y
Saito
Yoshiro
Y
Takahashi
Mateusz
M
Borkowski
Roman
R
Ciuryło
Paul S
PS
Julienne