Future quantum information science and technology would rely on our ability to synthesize and control quantum materials. These materials need to be tailored on atomic scale with increasing complexity and diversity leading to new combinations of properties and functionalities that can enable quantum states to be prepared and processed. In this talk we describe our recent work investigating non-equilibrium MBE synthesis of artificially sequenced complex superlattice compounds. The atomic stacking sequences within the unit cell of the novel superlattice compounds are “programmed” by sequential deposition of one atomic layer at a time, starting with the model system containing two ternary Heusler compounds (e.g., Co_2MnSi and Fe_2TiSi), and various other atomic stacking sequences. This approach may provide opportunities to encode properties and functionalities into materials.