Cross-correlated quantum thermometry using diamond containing dual-defect centers

• URL: http://arxiv.org/abs/2303.00073v3
• Date: Wed, 9 Aug 2023 10:52:53 GMT
• Title: Cross-correlated quantum thermometry using diamond containing dual-defect centers
• Authors: Madhav Gupta, Tongtong Zhang, Lambert Yeung, Jiahua Zhang, Yayin Tan, Yau Chuen Yiu, Shuxiang Zhang, Qi Wang, Zhongqiang Wang, Zhiqin Chu
• Abstract summary: We have developed a cross-validated optical thermometry method using a bulk diamond sample containing both NV centers and silicon vacancy (SiV) centers. As a proof-of-concept demonstration, we have shown a trustworthy temperature measurement under the influence of varying magnetic fields.
• Score: 7.504280368309183
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The contactless temperature measurement at micro/nanoscale is vital to a broad range of fields in modern science and technology. The nitrogen vacancy (NV) center, a kind of diamond defect with unique spin-dependent photoluminescence, has been recognized as one of the most promising nanothermometers. However, this quantum thermometry technique has been prone to a number of possible perturbations, which will unavoidably degrade its actual temperature sensitivity. Here, for the first time, we have developed a cross-validated optical thermometry method using a bulk diamond sample containing both NV centers and silicon vacancy (SiV) centers. Particularly, the latter allowing all-optical method has been intrinsically immune to those influencing perturbations for the NV-based quantum thermometry, hence serving as a real-time cross validation system. As a proof-of-concept demonstration, we have shown a trustworthy temperature measurement under the influence of varying magnetic fields. This multi-modality approach allows a synchronized cross-validation of the measured temperature, which is required for micro/nanoscale quantum thermometry in complicated environments such as a living cell.

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