Entanglement of spin-orbit qubits induced by Coulomb interaction

TL;DR

This paper demonstrates that Coulomb interaction can effectively entangle spin-orbit qubits in separate quantum dots by leveraging their electric dipole responses, advancing quantum information processing.

Contribution

It introduces a novel mechanism for entangling spin-orbit qubits via Coulomb interaction through electric dipole spin resonance effects.

Findings

Coulomb interaction induces entanglement between distant SOQs.

SOQs respond to electric fields through electric dipole spin resonance.

The mechanism enables efficient entanglement in quantum dot systems.

Abstract

Spin-orbit qubit (SOQ) is the dressed spin by the orbital degree of freedom through a strong spin-orbit coupling. We show that Coulomb interaction between two electrons in quantum dots located separately in two nanowires can efficiently induce quantum entanglement between two SOQs. The physical mechanism to achieve such quantum entanglement is based on the feasibility of the SOQ responding to the external electric field via an intrinsic electric dipole spin resonance.