High Field ESR Measurements of S=1/2 Quasi One-Dimensional Antiferromagnet Cu3Mo2O9

The tunneling of a Bose-Einstein condensate in a double-well potential causes the coherent atomic oscillations. The damping mechanism is employed to enhance the tunneling. Our numerical simulations show that the damping mechanism can firstly cause the atoms return to the initial well and form the metastable state. After that, the continuative dissipation of the energy of the system causes the unidirectional quantum coherent atomic tunneling, which just induces the system to transfer from the metastable state to the ground state.