An equivalent circuit for quantum point contact together with quantum dot

Detection of current flow through quantum dot (QD) is one application of quantum point contact (QPC). An equivalent circuit is introduced to simulate current flow through QDas well as QPC. The resistance and capacitance of components are defined to be voltage dependent. Their relations for voltage dependence of components are defined in such away that the results of simulation and measurement are close to each other. It is shown that the flow of current through the QD will change its voltage as well as the QPC voltage and by this change the flow of current through QD will be detected

Keywords:

Quantum Dot , Quantum Point Contact , Simulation , Equivalent Circuit