Qnami Foundry supports design of a Diamond micro-chip for quantum microscopy

Image credit: https://arxiv.org/pdf/2403.10414

This work, led by Mark Ku from the University of Delaware, showcases a diamond micro-chip (DMC) featuring a (111)-oriented nitrogen-vacancy (NV) center ensemble that enables high-resolution quantum microscopy of electrical current, magnetization, and spin structures. The diamond micro-chip was provided by the Qnami Quantum Foundry. Researchers demonstrate that the DMC exhibits minimal strain variation across large fields of view and maintains excellent NV spin coherence and optical quality—key for sensitive magnetometry. Using this platform, they achieve diffraction-limited, wide-field quantum microscopy of electrical currents and introduce a polymer-based method for deterministic DMC placement on various materials. These advances highlight the DMC’s potential to expand NV quantum sensing applications across materials science, electronics, spintronics, geology, biomedicine, and chemistry.

Read the full article: AVS Quantum Sci. 6, 044405 (2024)

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Enhancing the Stability of NV Centers in Diamond for Quantum Sensing

Scientific Publication

John Morton’s team used Qnami Foundry products to show that an alumina coating stabilizes nitrogen-vacancy centers in diamond.

Spatial Resolution in Scanning NV Magnetometry – Technical Note

Technical Note

This technical note explains how spatial resolution is defined in Scanning NV Magnetometry. For a given distance d between the NV center and the scanned surface, the best achievable lateral spatial resolution is 0.86 d.

Current Flow Mapping in Ferroelectric Domain Walls

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In a recent study on conducting ferroelectric domain walls, researchers used scanning NV magnetometry to directly visualize current flow at the nanoscale. These measurements were performed using the Qnami ProteusQ. The results challenge previous assumptions about current distribution and pave the way for more accurate modeling of next-generation memristive devices.

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