Diamond Micro-Chip for Quantum Microscopy

• URL: http://arxiv.org/abs/2403.10414v1
• Date: Fri, 15 Mar 2024 15:48:36 GMT
• Title: Diamond Micro-Chip for Quantum Microscopy
• Authors: Shahidul Asif, Hang Chen, Johannes Cremer, Shantam Ravan, Jeyson Tamara-Isaza, Saurabh Lamsal, Reza Ebadi, Yan Li, Ling-Jie Zhou, Cui-Zu Chang, John Q. Xiao, Amir Yacoby, Ronald L. Walsworth, Mark J. H. Ku,
• Abstract summary: The nitrogen vacancy (NV) center in diamond is an increasingly popular quantum sensor for microscopy of electrical current, magnetization, and spins. We characterize a diamond micro-chip containing a (111)-oriented NV ensemble and demonstrate its utility for high-resolution quantum microscopy. This work establishes the DMC's potential to expand the application of NV quantum microscopy in materials, device, geological, biomedical, and chemical sciences.
• Score: 5.888484009150695
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The nitrogen vacancy (NV) center in diamond is an increasingly popular quantum sensor for microscopy of electrical current, magnetization, and spins. However, efficient NV-sample integration with a robust, high-quality interface remains an outstanding challenge to realize scalable, high-throughput microscopy. In this work, we characterize a diamond micro-chip (DMC) containing a (111)-oriented NV ensemble; and demonstrate its utility for high-resolution quantum microscopy. We perform strain imaging of the DMC and find minimal detrimental strain variation across a field-of-view of tens of micrometer. We find good ensemble NV spin coherence and optical properties in the DMC, suitable for sensitive magnetometry. We then use the DMC to demonstrate wide-field microscopy of electrical current, and show that diffraction-limited quantum microscopy can be achieved. We also demonstrate the deterministic transfer of DMCs with multiple materials of interest for next-generation electronics and spintronics. Lastly, we develop a polymer-based technique for DMC placement. This work establishes the DMC's potential to expand the application of NV quantum microscopy in materials, device, geological, biomedical, and chemical sciences.

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