Resonance Quantum Gate

TL;DR

This paper proposes simple quantum ring models with attached wires and internal electrodes for quantum gates, demonstrating control of quantum current via resonance effects and electrode charge manipulation.

Contribution

It introduces minimal models of quantum gates using resonant quantum rings with internal electrodes, enabling current control through charge re-direction.

Findings

Quantum current can be controlled via resonance conditions.

Device parameters depend on temperature, Fermi level, and electron effective mass.

Resonance energy levels enable switching behavior.

Abstract

Simplest models of two- and three-terminal Quantum Quantum Gates are suggested in form of a quantum ring with few one-dimensional quantum wires attached to it and several point-wise govering electrodes inside the ring which are charged by a single hole. In resonance case, when the Fermi level in the wires coincides with the resonance energy level on the ring the geometry of the device may be chosen such that the quantum current through the switch from up-leading wire to the outgoing wires may be controlled via re-directing of the hole from one govering electrode to another one. The working parameters of the gate are defined in dependence of the desired working temperature, the Fermi level and the effective mass of the electron in the wires.