Microwave coherent manipulation of cold atoms in optically induced fictitious magnetic traps on an atom chip
Zhou Feng1, 2, Li Xiao1, 2, Ke Min2, 3, †, Wang Jin2, 3, Zhan Ming-Sheng1, 2, 3, ‡
       

(color online) Schematic view of the hybrid atom chip. Two 790 nm circularly polarized Gaussian beams produce locally distributed fictitious magnetic fields along the x axis. In combination with the static magnetic field generated by the current-carrying wire on the bottom layer of the chip, a strong three-dimensional confinement double-well potential is realized for cold atoms. A microwave coplanar waveguide (CPW) formed by the three upper wires provides a MW state-dependent potential. The barrier height of the double-well OFMTs can be state-selectively controlled by tuning the intensity of the microwave field.