Multi-species optically addressable spin defects in a van der Waals material

Abstract

Optically addressable spin defects hosted in two-dimensional van der Waals materials represent a new frontier for quantum technologies, promising to lead to a new class of ultrathin quantum sensors and simulators. Recently, hexagonal boron nitride (hBN) has been shown to host several types of optically addressable spin defects, thus offering a unique opportunity to simultaneously address and utilise various spin species in a single material. Here we demonstrate an interplay between two separate spin species within a single hBN crystal, namely $S=1$ boron vacancy defects and visible emitter spins. We unambiguously prove that the visible emitters are $S=\frac{1}{2}$ spins and further demonstrate room temperature coherent control and optical readout of both spin species. Importantly, by tuning the two spin species into resonance with each other, we observe cross-relaxation indicating strong inter-species dipolar coupling. We then demonstrate magnetic imaging using the $S=\frac{1}{2}$ defects, both under ambient and cryogenic conditions, and leverage their lack of intrinsic quantization axis to determine the anisotropic magnetic susceptibility of a test sample. Our results establish hBN as a versatile platform for quantum technologies in a van der Waals host at room temperature.

References in corpus (26)

• Many-body localization, thermalization, and entanglement
• Observation of discrete time-crystalline order in a disordered dipolar many-body system
• Exploring the many-body localization transition in two dimensions
• Room Temperature Initialisation and Readout of Intrinsic Spin Defects in a Van der Waals Crystal
• Identifying Carbon as the Source of Visible Single Photon Emission from Hexagonal Boron Nitride
• Sub-nanoscale Temperature, Magnetic Field and Pressure sensing with Spin Centers in 2D hexagonal Boron Nitride
• Room-temperature optically detected magnetic resonance of single defects in hexagonal boron nitride
• Intrinsic 2D-XY ferromagnetism in a van der Waals monolayer
• Single spin resonance in a van der Waals embedded paramagnetic defect
• Wide Field Imaging of van der Waals Ferromagnet Fe3GeTe2 by Spin Defects in Hexagonal Boron Nitride
• First-principles identification of single photon emitters based on carbon clusters in hexagonal boron nitride
• Towards $\text{ab initio}$ identification of paramagnetic substitutional carbon defects in hexagonal boron nitride acting as quantum bits
• A Quantum Dipolar Spin Liquid
• Emergent hydrodynamics in a strongly interacting dipolar spin ensemble
• Probing many-body dynamics in a two dimensional dipolar spin ensemble
• Coherent control of an ultrabright single spin in hexagonal boron nitride at room temperature
• Coherent dynamics of strongly interacting electronic spin defects in hexagonal boron nitride
• Room temperature coherent control of protected qubit in hexagonal boron nitride
• Quantum probe hyperpolarisation of molecular nuclear spins
• Magnetic imaging with spin defects in hexagonal boron nitride
• Optically-active spin defects in few-layer thick hexagonal boron nitride
• Laser modulation of superconductivity in a cryogenic widefield nitrogen-vacancy microscope
• Detection of paramagnetic spins with an ultrathin van der Waals quantum sensor
• Quantum sensing of paramagnetic spins in liquids with spin qubits in hexagonal boron nitride
• Laser Direct Writing of Visible Spin Defects in Hexagonal Boron Nitride for Applications in Spin-Based Technologies
• $\text{Ab initio}$ and group theoretical study of properties of the ${\text{C}}_{\text{2}}{\text{C}}_{\text{N}}$ carbon trimer defect in h-BN

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• Nanotube spin defects for omnidirectional magnetic field sensing
• Probing Stress and Magnetism at High Pressures with Two-Dimensional Quantum Sensors
• Violet to near-infrared optical addressing of spin pairs in hexagonal boron nitride
• Creation and Microscopic Origins of Single-Photon Emitters in Transition Metal Dichalcogenides and Hexagonal Boron Nitride
• Optimisation of electron irradiation for creating spin ensembles in hexagonal boron nitride
• Coherent Spins in van der Waals Semiconductor GeS2 at Ambient Conditions
• Magnetic-field dependent VB- spin decoherence in hexagonal boron nitrides: A first-principles study
• Radiofrequency receiver based on isotropic solid-state spins
• First-principles computational methods for quantum defects in two-dimensional materials: A perspective
• A charge transfer mechanism for optically addressable solid-state spin pairs
• Systematic investigation of dynamic nuclear polarization with boron vacancy in hexagonal boron nitride
• Optical spin defect pairs in cubic boron nitride
• Nuclear Spin-Mediated Relaxation Mechanisms of the V${}_B^{-}$ Center in hBN
• Multi-wavelength Spin Dynamics of Defects in Hexagonal Boron Nitride
• Omnidirectional magnetic imaging of magnetic anisotropy and phase transitions
• A scalable method for cavity-enhanced solid-state quantum sensors