Room Temperature Coherent Control of Spin Defects in hexagonal Boron Nitride

Abstract

Optically active defects in solids with accessible spin states are promising candidates for solid state quantum information and sensing applications. To employ these defects as quantum building blocks, coherent manipulation of their spin state is required. Here we realize coherent control of ensembles of boron vacancy (V${}_B^{-}$) centers in hexagonal boron nitride (hBN). Specifically, by applying pulsed spin resonance protocols, we measure spin-lattice relaxation time ($T_1$) of 18 $\mu$s and spin coherence time ($T_2$) of 2 $\mu$s at room temperature. The spin-lattice relaxation time increases by three orders of magnitude at cryogenic temperature. Furthermore, employing a two- and three-pulse electron spin-echo envelope modulation (ESEEM) we separate the quadrupole and hyperfine interactions with the surrounding nuclei. Finally, by applying a method to decouple the spin state from its inhomogeneous nuclear environment - a "hole-burning" - the spectral optically detected magnetic resonance linewidth is significantly reduced to several tens of kHz, thus extending the spin coherence time by a factor of three. Our results are important for employment of van der Waals materials for quantum technologies, specifically in the context of using hBN as a high-resolution quantum sensor for hybrid quantum systems including 2D heterostructures, nanoscale devices and emerging atomically thin magnets.

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Cited by in corpus (84)

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• Nanomaterials for Quantum Information Science and Engineering
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• Excited-state optically detected magnetic resonance of spin defects in hexagonal boron nitride
• Optically-active spin defects in few-layer thick hexagonal boron nitride
• Sensing the local magnetic environment through optically active defects in a layered magnetic semiconductor
• Excited-state spin-resonance spectroscopy of V${}_{\text{B}}^{-}$ defect centers in hexagonal boron nitride
• Dielectrics for Two-Dimensional Transition Metal Dichalcogenide Applications
• Greatly Enhanced Emission from Spin Defects in Hexagonal Boron Nitride Enabled by a Low-Loss Plasmonic Nano-Cavity
• Electron-nuclear coherent coupling and nuclear spin readout through optically polarized VB- spin states in hBN
• Single nuclear spin detection and control in a van der Waals material
• Engineering Quantum Light Sources with Flat Optics
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• Tailoring the Emission Wavelength of Color Centers in Hexagonal Boron Nitride for Quantum Applications
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• Detection of paramagnetic spins with an ultrathin van der Waals quantum sensor
• Probing the Optical Dynamics of Quantum Emitters in Hexagonal Boron Nitride
• Quantum Optics Applications of Hexagonal Boron Nitride Defects
• Quantum sensing of paramagnetic spins in liquids with spin qubits in hexagonal boron nitride
• Optically addressable spin defects coupled to bound states in the continuum metasurfaces
• $\text{Ab initio}$ 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
• Nanotube spin defects for omnidirectional magnetic field sensing
• Substrate-controlled dynamics of spin qubits in low dimensional van-der-Waals materials
• Characterizing temperature and strain variations with qubit ensembles for their robust coherence protection
• Robust Nuclear Spin Polarization via Ground-State Level Anti-Crossing of Boron Vacancy Defects in Hexagonal Boron Nitride
• Probing Stress and Magnetism at High Pressures with Two-Dimensional Quantum Sensors
• Color Centers in Hexagonal Boron Nitride
• Bistable carbon-vacancy defects in $h$-BN
• Materials for Quantum Technologies: a Roadmap for Spin and Topology
• Violet to near-infrared optical addressing of spin pairs in hexagonal boron nitride
• Active spin lattice hyperpolarization: Application to hexagonal boron nitride color centers
• Long-Lived Spin-Polarized Intermolecular Exciplex States in Thermally Activated Delayed Fluorescence-Based Organic Light-Emitting Diodes
• Temperature dependent spin-phonon coupling of boron-vacancy centers in hexagonal boron nitride
• Creation and Microscopic Origins of Single-Photon Emitters in Transition Metal Dichalcogenides and Hexagonal Boron Nitride
• Fiber-tip endoscope for optical and microwave control
• Intrinsic high-fidelity spin polarization of charged vacancies in hexagonal boron nitride
• Optimisation of electron irradiation for creating spin ensembles in hexagonal boron nitride
• Local noise spectroscopy of Wigner crystals in two-dimensional materials
• 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
• Coherent Driving of a Single Nitrogen Vacancy Center by a Resonant Magnetic Tunnel Junction
• Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride
• Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis
• Quantum Sensing Enhancement through a Nuclear Spin Register in Nitrogen-Vacancy Centers in Diamond
• Quantifying the creation of negatively charged boron vacancies in He-ion irradiated hexagonal boron nitride
• Proximity-Induced Exchange Interaction: a New Pathway for Quantum Sensing using Spin Centers in Hexagonal Boron Nitride
• Room-Temperature Electrical Readout of Spin Defects in van der Waals Materials
• Simulating optically-active spin defects with a quantum computer
• Temperature-dependent energy-level shifts of Spin Defects in hexagonal Boron Nitride
• Radiation pressure backaction on a hexagonal boron nitride nanomechanical resonator
• Current-induced brightening of vacancy-related emitters in hexagonal boron nitride
• Quantum microscopy with van der Waals heterostructures
• Universal Reconstruction of Complex Magnetic Profiles with Minimum Prior Assumptions
• Systematic characterization of nanoscale $h$-BN quantum sensor spots created by helium-ion microscopy
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• A charge transfer mechanism for optically addressable solid-state spin pairs
• Systematic investigation of dynamic nuclear polarization with boron vacancy in hexagonal boron nitride
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• Spin-Phonon Relaxation of Boron-Vacancy Centers in Two-Dimensional Boron Nitride Polytypes
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• Decoherence of V${}_{\mathrm{B}}^{-}$ spin defects in monoisotopic hexagonal boron nitride
• Coherence properties of electron beam activated emitters in hexagonal boron nitride under resonant excitation
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