An atom chip (Ach) for an ultra-cold atom sensor, the atom chip includes a first pair of waveguides, a second pair of waveguides, the projections of the guides along X and the guides along Y′ in the plane XY forming, at their intersection, a first parallelogram with a centre O and having a first surface, a first conductive strip and a second conductive strip arranged such that their respective projection in the plane XY forms, at their intersection, a second parallelogram also with a centre O and having a second surface, the strips being designed to be flowed through by DC currents, an intersection between the first and the second surface being greater than or equal to 40% of the first surface.