Resonator-assisted entangling gate for singlet-triplet spin qubits in nanowire double quantum dots

TL;DR

This paper proposes a high-fidelity entangling gate for spin qubits in nanowire double quantum dots, utilizing resonator assistance and virtual charge transitions, with feasibility demonstrated under current experimental noise conditions.

Contribution

It introduces a novel resonator-assisted entangling gate for singlet-triplet spin qubits, leveraging virtual charge dipole transitions for improved fidelity.

Findings

Gate achieves high fidelity under realistic noise conditions

Feasibility demonstrated with current experimental setups

Uses virtual charge dipole transitions for entangling operations

Abstract

We propose a resonator-assisted entangling gate for spin qubits with high fidelity. Each spin qubit corresponds to two electrons in a nanowire double quantum dot, with the singlet and one of the triplets as the logical qubit states. The gate is effected by virtual charge dipole transitions. We include noise in our model to show feasibility of the scheme under current experimental conditions.