Coherent Driving of a Single Nitrogen Vacancy Center by a Resonant Magnetic Tunnel Junction

TL;DR

This paper demonstrates a novel method to coherently control nitrogen-vacancy center spins using a resonant magnetic tunnel junction, enabling scalable, low-power quantum information processing.

Contribution

Introduction of magnetic tunnel junctions for all-electric, resonant control of NV center spins, enhancing scalability and reducing power consumption in quantum systems.

Findings

Resonant MTJ can drive NV spin rotations effectively.

Magnetic stray fields from MTJ enable coherent control.

Method reduces power consumption for NV manipulation.

Abstract

Nitrogen-vacancy (NV) centers, atomic spin defects in diamond, represent an active contender for advancing transformative quantum information science (QIS) and innovations. One of the major challenges for designing NV-based hybrid systems for QIS applications results from the difficulty of realizing local control of individual NV spin qubits in a scalable and energyefficient way. To address this bottleneck, we introduce magnetic tunnel junction (MTJ) devices to establish coherent driving of an NV center by a resonant MTJ with voltage controlled magnetic anisotropy. We show that the oscillating magnetic stray field produced by a resonant micromagnet can be utilized to effectively modify and drive NV spin rotations when the NV frequency matches the corresponding resonance conditions of the MTJ. Our results present a new pathway to achieve all-electric control of an NV spin qubit with reduced power consumption and improved solid-state scalability for implementing cutting-edge QIS technological applications.