Violet to near-infrared optical addressing of spin pairs in hexagonal boron nitride

Abstract

Optically addressable solid-state spins are an important platform for practical quantum technologies. Van der Waals material hexagonal boron nitride (hBN) is a promising host as it contains a wide variety of optical emitters, but thus far observations of addressable spins have been sparse, and most of them lacked a demonstration of coherent spin control. Here we demonstrate robust optical readout of spin pairs in hBN with emission wavelengths spanning from violet to the near-infrared. We find these broadband spin pairs exist naturally in a variety of hBN samples from bulk crystals to powders to epitaxial films, and can be coherently controlled across the entire wavelength range. Furthermore, we identify the optimal wavelengths for independent readout of spin pairs and boron vacancy spin defects co-existing in the same sample. Our results establish the ubiquity of the optically addressable spin pair system in hBN across a broad parameter space, making it a versatile playground for spin-based quantum technologies.

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Cited by in corpus (6)

• Room-Temperature Electrical Readout of Spin Defects in van der Waals Materials
• A charge transfer mechanism for optically addressable solid-state spin pairs
• Optical spin defect pairs in cubic boron nitride
• Omnidirectional magnetic imaging of magnetic anisotropy and phase transitions
• Multi-wavelength Spin Dynamics of Defects in Hexagonal Boron Nitride
• A scalable method for cavity-enhanced solid-state quantum sensors