Microwave coherent manipulation of cold atoms in optically induced fictitious magnetic traps on an atom chip |
(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. |