تقرير
NV-Diamond Magnetic Microscopy using a Double Quantum 4-Ramsey Protocol
| العنوان: | NV-Diamond Magnetic Microscopy using a Double Quantum 4-Ramsey Protocol |
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| المؤلفون: | Hart, Connor A., Schloss, Jennifer M., Turner, Matthew J., Scheidegger, Patrick J., Bauch, Erik, Walsworth, Ronald L. |
| المصدر: | Phys. Rev. Applied 15, 044020 (2021) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Physics - Applied Physics, Physics - Instrumentation and Detectors |
| الوصف: | We introduce a double quantum (DQ) 4-Ramsey measurement protocol that enables wide-field magnetic imaging using nitrogen vacancy (NV) centers in diamond, with enhanced homogeneity of the magnetic sensitivity relative to conventional single quantum (SQ) techniques. The DQ 4-Ramsey protocol employs microwave-phase alternation across four consecutive Ramsey (4-Ramsey) measurements to isolate the desired DQ magnetic signal from any residual SQ signal induced by microwave pulse errors. In a demonstration experiment employing a 1-$\mu$m-thick NV layer in a macroscopic diamond chip, the DQ 4-Ramsey protocol provides volume-normalized DC magnetic sensitivity of $\eta^\text{V}=34\,$nTHz$^{-1/2} \mu$m$^{3/2}$ across a $125\,\mu$m$ \,\times\,125\,\mu $m field of view, with about 5$\times$ less spatial variation in sensitivity across the field of view compared to a SQ measurement. The improved robustness and magnetic sensitivity homogeneity of the DQ 4-Ramsey protocol enable imaging of dynamic, broadband magnetic sources such as integrated circuits and electrically-active cells. Comment: 20 pages, 10 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevApplied.15.044020 |
| URL الوصول: | http://arxiv.org/abs/2009.02371 |
| رقم الأكسشن: | edsarx.2009.02371 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevApplied.15.044020 |
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