A superconductor with $p_x+i{p}_y$ order has long fascinated the physics community because vortex defects in such a system host Majorana zero modes. Here, we propose a simple construction of a chiral superconductor using proximitized quantum wires and twist angle engineering as basic ingredients. A weakly coupled parallel array of these wires forms a gapless $p$-wave superconductor. Two such arrays, stacked on top of one another with a twist angle close to ${90}^{\circ }$, spontaneously break time reversal symmetry and produce a robust, fully gapped $p_x+i{p}_y$ superconductor. We map out the topological phases of this setup, demonstrate the existence of Majorana zero modes in vortices, and discuss prospects for experimental realization.

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• Majorana bound states
• Topological phases of matter
• Topological superconductors
• Quantum wires