Scalable quantum information transfer between nitrogen-vacancy-center ensembles

TL;DR

This paper presents a scalable architecture for quantum information transfer between nitrogen-vacancy-center ensembles using a resonant or detuned LC circuit, enabling high-fidelity transfer suitable for large quantum systems.

Contribution

It introduces a novel hybrid system architecture combining LC circuits and NVCEs for efficient quantum information transfer, adaptable to large-scale quantum networks.

Findings

High-fidelity quantum information transfer demonstrated between NVCEs

Effective transfer achieved with both resonant and large detuning interactions

System scalability allows transfer between any two NVCEs in large networks

Abstract

We propose an architecture for realizing quantum information transfer (QIT). In this architecture, a LC circuit is used to induce the necessary interaction between flux qubits, each magnetically coupling to a nitrogen-vacancy center ensemble (NVCE). We explicitly show that for resonant interaction and large detuning cases, high-fidelity QIT between two spatially-separated NVCEs can be implemented. Our proposal can be extended to achieve QIT between any two selected NVCEs in a large hybrid system by adjusting system parameters, which is important in large scale quantum information processing.