Resonance Quantum Switch and Quantum Gate

Abstract

Solvable models for two- and three-terminal Quantum Switches and Quantum Gates are suggested in form of a quantum ring witha few one-dimensional quantum wires attached to it. In resonance case when the Fermi level in the wires coincides with the resonance energy level on the ring , the magnitude of the governing electric field may be specified such that the quantum current through the switch from up-leading wire to the outgoing wires may be controlled via rotation of the orthogonal projection of the field onto the plane of the device.The working parameters of the switches and gates are defined in dependence of the desired working temperature, the Fermi level and the effective mass of the electron in the wires.