Quantum teleportation of electrons in quantum wires with surface acoustic waves

TL;DR

This paper proposes a semiconductor device for deterministic quantum teleportation of electrons in quantum wires using surface acoustic waves, demonstrating high fidelity through numerical simulations of the process.

Contribution

It introduces a novel device design and numerical simulation method for quantum teleportation of electrons in quantum wires with surface acoustic waves, enabling potential experimental realization.

Findings

High estimated fidelity suggests efficient teleportation possible

Numerical solution of three-particle Schrödinger equation validates the approach

Device utilizes Coulomb interaction for entanglement and Bell-state measurement

Abstract

We propose and numerically simulate a semiconductor device based on coupled quantum wires, suitable for deterministic quantum teleportation of electrons trapped in the minima of surface acoustic waves.We exploit a network of interacting semiconductor quantum wires able to provide the universal set of gates for quantum information processing, with the qubit defined by the localization of a single electron in one of two coupled channels.The numerical approach is based on a time-dependent solution of the three-particle Schr\"odinger equation. First, a maximally entangled pair of electrons is obtained via Coulomb interaction between carriers in different channels. Then, a complete Bell-state measurement involving one electron from this pair and a third electron is performed. Finally, the teleported state is reconstructed by means of local one-qubit operations. The large estimated fidelity explicitely suggests that an efficient teleportation process could be reached in an experimental setup.