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

Madhav Gupta; Tongtong Zhang; Lambert Yeung; Jiahua Zhang; Yayin Tan; Yau Chuen Yiu; Shuxiang Zhang; Qi Wang; Zhongqiang Wang; Zhiqin Chu

arXiv · 2303.00073

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

Madhav Gupta·Tongtong Zhang·Lambert Yeung·Jiahua Zhang·Yayin Tan·Yau Chuen Yiu·Shuxiang Zhang·Qi Wang·Zhongqiang Wang·Zhiqin Chu

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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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Madhav Gupta, Tongtong Zhang, Lambert Yeung, Jiahua Zhang, Yayin Tan, Yau Chuen Yiu, Shuxiang Zhang, Qi Wang, Zhongqiang Wang, Zhiqin Chu. 2023-02-28. Cross-correlated quantum thermometry using diamond containing dual-defect centers. https://arxiv.org/abs/2303.00073

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