Simultaneous Determination of Local Magnetic Fields and Sensor Orientation with Nitrogen-Vacancy Centers in Nanodiamond

• URL: http://arxiv.org/abs/2507.05366v1
• Date: Mon, 07 Jul 2025 18:00:14 GMT
• Title: Simultaneous Determination of Local Magnetic Fields and Sensor Orientation with Nitrogen-Vacancy Centers in Nanodiamond
• Authors: Yizhou Wang, Haochen Shen, Zhongyuan Liu, Yue Yu, Shengwang Du, Chong Zu, Chuanwei Zhang,
• Abstract summary: Nitrogen-vacancy (NV) centers in nanodiamonds have emerged as a promising quantum sensing platform for biomedical imaging applications.<n>We demonstrate a novel approach to simultaneously determine each particle's crystallographic axes and the surrounding local vector magnetic field.
• Score: 15.599947374550908
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Nitrogen-vacancy (NV) centers in nanodiamonds have emerged as a promising quantum sensing platform for biomedical imaging applications, yet random orientations of individual particles present significant challenges in large-scale sensor calibration. In this study, we demonstrate a novel approach to simultaneously determine each particle's crystallographic axes and the surrounding local vector magnetic field. Specifically, a minimum of four distinct bias fields is required to unambiguously extract both the orientation and the local field. We validate our method experimentally using NV centers in two scenarios: (1) in a bulk diamond with known crystal orientation as a proof of concept, and (2) on various single nanodiamonds to mimic real-world applications. Our work represents a crucial step towards unlocking the full potential of nanodiamonds for advanced applications such as in-situ biomedical imaging and nanoscale sensing in complex environments.

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