Long-lived dipolar molecules and Feshbach molecules in a 3D optical lattice

TitleLong-lived dipolar molecules and Feshbach molecules in a 3D optical lattice
Publication TypeJournal Article
Year of Publication2012
AuthorsChotia, A, Neyenhuis, B, Moses, SA, Yan, B, Covey, JP, Foss-Feig, M, Rey, AMaria, Jin, DS, Ye, J
JournalPhysical Review Letters
Date Published2012/2/23

We have realized long-lived ground-state polar molecules in a 3D optical
lattice, with a lifetime of up to 25 s, which is limited only by off-resonant
scattering of the trapping light. Starting from a 2D optical lattice, we
observe that the lifetime increases dramatically as a small lattice potential
is added along the tube-shaped lattice traps. The 3D optical lattice also
dramatically increases the lifetime for weakly bound Feshbach molecules. For a
pure gas of Feshbach molecules, we observe a lifetime of >20 s in a 3D optical
lattice; this represents a 100-fold improvement over previous results. This
lifetime is also limited by off-resonant scattering, the rate of which is
related to the size of the Feshbach molecule. Individually trapped Feshbach
molecules in the 3D lattice can be converted to pairs of K and Rb atoms and
back with nearly 100% efficiency.

Short TitlePhys. Rev. Lett.