%0 Journal Article %J Physical Review Letters %D 2012 %T Long-lived dipolar molecules and Feshbach molecules in a 3D optical lattice %A Amodsen Chotia %A Brian Neyenhuis %A Steven A. Moses %A Bo Yan %A Jacob P. Covey %A Michael Foss-Feig %A Ana Maria Rey %A Deborah S. Jin %A Jun Ye %X 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. %B Physical Review Letters %V 108 %8 2012/2/23 %G eng %U http://arxiv.org/abs/1110.4420v1 %N 8 %! Phys. Rev. Lett. %R 10.1103/PhysRevLett.108.080405