Microwave coherent manipulation of cold atoms in optically induced fictitious magnetic traps on an atom chip**Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0302800) and the National Natural Science Foundation of China (Grant No. 11674361).

Abstract

We propose a novel on-chip platform for controlling and manipulating cold atoms precisely and coherently. The scheme is achieved by producing optically induced fictitious magnetic traps (OFMTs) with 790 nm (for 87Rb) circularly polarized laser beams and state-dependent potentials simultaneously for two internal atomic states with microwave coplanar waveguides. We carry out numerical calculations and simulations for controlled collisional interactions between OFMTs and addressable single atoms’ manipulation on our designed hybrid atom chips. The results show that our proposed platform is feasible and flexible, which has wide applications including collisional dynamics investigation, entanglement generation, and scalable quantum gates implementation.