  Hybrid quantum systems that unite laser-cooled trapped ions and ultracold
quantum gases in a single experimental setup have opened a rapidly advancing
field of study, including Quantum chemistry, polaron physics, quantum
information processing and quantum simulations. We present a fully developed
and tested ion trap chip and propose a flat chip trap that can be placed
beneath the ion trap. This design substantially addresses the difficulties
specific to hybrid traps and features well-aligned chips that allow for
independent adjustment of the depth of the atomic trap and the confinement and
positioning of ions. The ion trap has been successfully tested with linear ion
crystals of Yb$^{+}$ and neutral $^{87}$Rb were also loaded into a mMOT a few
millimeters under the ion trapping region.
