Single spin resonance in a van der Waals embedded paramagnetic defect

Abstract

Spins constitute a group of quantum objects forming a key resource in modern quantum technology. Two-dimensional (2D) van der Waals materials are of fundamental interest for studying nanoscale magnetic phenomena. However, isolating singular paramagnetic spins in 2D systems is challenging. We report here on a quantum emitting source embedded within hexgonal boron nitride (h-BN) exhibiting optical magnetic resonance (ODMR). We extract an isotropic $g$ factor close to 2 and derive an upper bound for a zero field splitting (ZFS) ($\le$ 4 MHz). Photoluminescence (PL) behavior under temperature cycling using different excitations is presented, assigning probable zero phonon lines (ZPLs) / phonon side band (PSBs) to emission peaks, compatible with h-BN's phonon density of states, indicating their intrinsic nature. Narrow and inhomogeneous broadened ODMR lines differ significantly from monoatomic vacancy defect lines known in literature. We derive a hyperfine coupling of around 10 MHz. Its angular dependence indicates an unpaired electron in an out-of-plane $\pi$-orbital, probably originating from an additional substitutional carbon impurity or other low mass atom. We determine the spin relaxation time $T_1$ to be around 17 $\mu$s.

References in corpus (14)

• Hexagonal boron nitride is an indirect bandgap semiconductor
• 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
• Color centers in hexagonal boron nitride monolayers: A group theory and ab-initio analysis
• Structural attributes and photo-dynamics of visible spectrum quantum emitters in hexagonal boron nitride
• Optical Signatures of Quantum Emitters in Suspended Hexagonal Boron Nitride
• Efficient single photon emission from a high-purity hexagonal boron nitride crystal
• Spin-Dependent Quantum Emission in Hexagonal Boron Nitride at Room Temperature
• Defect states in hexagonal boron nitride: Assignments of observed properties and prediction of properties relevant to quantum computation
• Radiation tolerance of two-dimensional material-based devices for space applications
• Super-resolution imaging of quantum emitters in layered materials
• Origin of nonclassical light emission from defects in multi-layer hexagonal boron nitride
• Optical control of the charge state of color centers in hexagonal boron nitride
• Quantum light in curved low dimensional hexagonal boron nitride systems

Cited by in corpus (61)

• 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
• High-contrast plasmonic-enhanced shallow spin defects in hexagonal boron nitride for quantum sensing
• Nuclear spin polarization and control in a van der Waals material
• Towards $\text{ab initio}$ identification of paramagnetic substitutional carbon defects in hexagonal boron nitride acting as quantum bits
• Coupling spin defects in hexagonal boron nitride to monolithic bullseye cavities
• Quantum sensing and imaging with spin defects in hexagonal boron nitride
• Coherent control of an ultrabright single spin in hexagonal boron nitride at room temperature
• Excited State Spectroscopy of Boron Vacancy Defects in Hexagonal Boron Nitride using Time-Resolved Optically Detected Magnetic Resonance
• Room temperature coherent control of protected qubit in hexagonal boron nitride
• Magnetic imaging with spin defects in hexagonal boron nitride
• Coherent dynamics of multi-spin ${\mathrm{V}}_{\mathrm{B}}^{-}$ centers in hexagonal boron nitride
• Excited-state optically detected magnetic resonance of spin defects in hexagonal boron nitride
• Optically-active spin defects in few-layer thick hexagonal boron nitride
• Excited-state spin-resonance spectroscopy of V${}_{\text{B}}^{-}$ defect centers in hexagonal boron nitride
• Electron-nuclear coherent coupling and nuclear spin readout through optically polarized VB- spin states in hBN
• Multi-species optically addressable spin defects in a van der Waals material
• Alternant Hydrocarbon Diradicals as Optically Addressable Molecular Qubits
• Single nuclear spin detection and control in a van der Waals material
• Organic molecules as origin of visible-range single photon emission from hexagonal boron nitride and mica
• Isotopic control of the boron-vacancy spin defect in hexagonal boron nitride
• Detection of paramagnetic spins with an ultrathin van der Waals quantum sensor
• Excited-state spectroscopy of spin defects in hexagonal boron nitride
• Probing the Optical Dynamics of Quantum Emitters in Hexagonal Boron Nitride
• 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
• Scalable Spin Squeezing from Finite Temperature Easy-plane Magnetism
• $\text{Ab initio}$ and group theoretical study of properties of the ${\text{C}}_{\text{2}}{\text{C}}_{\text{N}}$ carbon trimer defect in h-BN
• Elementary excitations of single-photon emitters in hexagonal Boron Nitride
• Symmetric carbon tetramers forming chemically stable spin qubits in hBN
• Nanotube spin defects for omnidirectional magnetic field sensing
• Engineering and probing atomic quantum defects in 2D semiconductors: A perspective
• Symmetry of the Hyperfine and Quadrupole Interactions of Boron Vacancies in a Hexagonal Boron Nitride
• Dopant-assisted stabilization of negatively charged single nitrogen-vacancy centers in phosphorus-doped diamond at low temperatures
• Bistable carbon-vacancy defects in $h$-BN
• Violet to near-infrared optical addressing of spin pairs in hexagonal boron nitride
• Manipulating the Charge State of Spin Defects in Hexagonal Boron Nitride
• Creation and Microscopic Origins of Single-Photon Emitters in Transition Metal Dichalcogenides and Hexagonal Boron Nitride
• Carbon-based single photon emitters in hexagonal boron nitride with triplet ground state
• Stimulated Emission Depletion Microscopy with Color Centers in Hexagonal Boron Nitride
• Nitrogen isotope effects on boron vacancy quantum sensors in hexagonal boron nitride
• Photo-dynamics of quantum emitters in aluminum nitride
• Coherent Spins in van der Waals Semiconductor GeS2 at Ambient Conditions
• Investigation of photon emitters in Ce-implanted hexagonal boron nitride
• Magnetic-field dependent VB- spin decoherence in hexagonal boron nitrides: A first-principles study
• Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis
• Radiofrequency receiver based on isotropic solid-state spins
• Proximity-Induced Exchange Interaction: a New Pathway for Quantum Sensing using Spin Centers in Hexagonal Boron Nitride
• Temperature-dependent energy-level shifts of Spin Defects in hexagonal Boron Nitride
• Current-induced brightening of vacancy-related emitters in hexagonal boron nitride
• First-principles computational methods for quantum defects in two-dimensional materials: A perspective
• Growth of few-layer molecular crystals of PTCDI on hexagonal boron nitride by microspacing air-gap sublimation
• Quantum microscopy with van der Waals heterostructures
• A charge transfer mechanism for optically addressable solid-state spin pairs
• Room-temperature hybrid 2D-3D quantum spin system for enhanced magnetic sensing and many-body dynamics
• Stability of the discrete time-crystalline order in spin-optomechanical and open cavity QED systems
• Systematic investigation of dynamic nuclear polarization with boron vacancy in hexagonal boron nitride
• Intermediate Excited State Relaxation Dynamics of Boron Vacancy Spin Defects in Hexagonal Boron Nitride
• Optical spin defect pairs in cubic boron nitride
• Decoherence of V${}_{\mathrm{B}}^{-}$ spin defects in monoisotopic hexagonal boron nitride