The invention discloses an atomic-scale construction method for manufacturing a
semiconductor substrate
quantum simulator, which comprises the following steps: firstly, depositing singly distributed
metal atoms on a
semiconductor substrate at a controllable
deposition rate by adopting a vacuum thermal
evaporation method, and then depositing
metal atoms on the
semiconductor substrate at a controllable
deposition rate by utilizing a longitudinal control method of a
scanning tunneling microscope (STM). The
metal atoms adsorbed on the surface of the substrate are carried at a target position by accurately regulating and controlling the dragging speed of the needle tip, the
tunnel junction bias
voltage and the
tunneling current, so that lifting, placing and moving of a single atom are realized. The construction of artificial
quantum dots and
quantum dot molecules is realized by regulating and controlling the distance between metal atoms. A source
electrode, a drain
electrode and a grid
electrode of
quantum dot molecules are controlled in an integrated mode through
vacuum evaporation, and the quantum simulator capable of simulating quantum behaviors of a specific molecular structure is formed. According to the invention, the
coupling strength of the artificial
quantum dot molecules is accurately regulated and controlled through the external
grid voltage, and the quantum characteristics of molecule front track filling and
electron transport
kinematics thereof can be accurately simulated.