Charge qubit entanglement via conditional single-electron transfer in an array of quantum dots

TL;DR

This paper introduces a new method for entangling charge qubits in quantum dots through conditional electron transfer, using resonant optical pulses and voltage gates, demonstrated with a nine-qubit Shor code example.

Contribution

It presents a novel entanglement scheme for quantum-dot charge qubits utilizing conditional electron transfer and optical control, advancing quantum information processing techniques.

Findings

Successful proposal of a charge qubit entanglement method

Application to nine-qubit Shor code state preparation

Potential for scalable quantum computing implementations

Abstract

We propose a novel scheme to generate entanglement among quantum-dot-based charge qubits via sequential electron transfer in an auxiliary quantum dot structure whose transport properties are conditioned by qubit states. The transfer protocol requires the utilization of resonant optical pulses combined with an appropriate voltage gate pattern. As an example illustrating the application of this scheme, we examine the nine-qubit Shor code state preparation together with the error syndrome measurement.