Room temperature coherent control of protected qubit in hexagonal boron nitride

Abstract

Spin defects in foils of hexagonal boron nitride are an attractive platform for magnetic field imaging, since the probe can be placed in close proximity to the target. However, as a III-V material the electron spin coherence is limited by the nuclear spin environment, with spin echo coherence time of $\sim 100\mathrm{ns}$ at room temperature accessible magnetic fields. We use a strong continuous microwave drive with a modulation in order to stabilize a Rabi oscillation, extending the coherence time up to $\sim 4\mu \mathrm{s}$, which is close to the 10-$\mu \mathrm{s}$ electron spin lifetime in our sample. We then define a protected qubit basis, and show full control of the protected qubit. The coherence times of a superposition of the protected qubit can be as high as $0.8\mu \mathrm{s}$. This work establishes that boron vacancies in hexagonal boron nitride can have electron spin coherence times that are competitive with typical NV-centers in small nanodiamonds under ambient conditions.

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Cited by in corpus (22)

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• Protecting Quantum Information via Destructive Interference of Correlated Noise
• High Frequency Magnetometry with an Ensemble of Spin Qubits in Hexagonal Boron Nitride
• High Fidelity Control of a Nitrogen-Vacancy Spin Qubit at Room Temperature using the SMART Protocol
• Violet to near-infrared optical addressing of spin pairs in hexagonal boron nitride
• Manipulating the Charge State of Spin Defects in Hexagonal Boron Nitride
• Coherent Spins in van der Waals Semiconductor GeS2 at Ambient Conditions
• Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride
• Magnetic-field dependent VB- spin decoherence in hexagonal boron nitrides: A first-principles study
• Quantifying the creation of negatively charged boron vacancies in He-ion irradiated hexagonal boron nitride
• Continuous drive heterodyne microwave sensing with spin qubits in hexagonal boron nitride
• Radiation pressure backaction on a hexagonal boron nitride nanomechanical resonator
• Many-Body Entanglement in Solid-State Emitters
• Scaling behavior of the degree of circular polarization of surface plasmon polariton
• A charge transfer mechanism for optically addressable solid-state spin pairs
• Concatenated continuous driving of silicon qubit by amplitude and phase modulation
• Robust gigahertz-range ac magnetometry with an ensemble of NV centers in diamond using concatenated continuous dynamical decoupling
• Nuclear Spin-Mediated Relaxation Mechanisms of the V${}_B^{-}$ Center in hBN
• Generation of phonon quantum states and quantum correlations among single photon emitters in hexagonal boron nitride
• All-optical magnetic imaging with spin defects in van der Waals materials at Angstrom-scale