Spin-orbit induced spin-qubit control in nanowires

TL;DR

This paper discusses a method for controlling spin-qubits in nanowires via spin-orbit coupling, detailing experimental considerations, single-qubit rotations, and deriving effective two-qubit interactions with validated analytic expressions.

Contribution

It introduces a detailed scheme for spin-qubit manipulation in nanowires using spin-orbit coupling, including derivations of two-qubit interactions and their numerical validation.

Findings

Analytic expression for two-qubit coupling strength matches numerical results.

Detailed scheme for single-qubit rotations in nanowires.

Discussion of experimental status and implementation considerations.

Abstract

We elaborate on a number of issues concerning our recent proposal for spin-qubit manipulation in nanowires using the spin-orbit coupling. We discuss the experimental status and describe in further detail the scheme for single-qubit rotations. We present a derivation of the effective two-qubit coupling which can be extended to higher orders in the Coulomb interaction. The analytic expression for the coupling strength is shown to agree with numerics.