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Chin. Phys. B, 2026, Vol. 35(8): 080701    DOI: 10.1088/1674-1056/ae24e9
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Simulation study on the impact of microwave pulses on performance of ensemble nitrogen-vacancy centers

Xu-Bo Liao(廖旭博)1,2,3, Yi Zhang(张燚)1,2,†, Qi-Yuan Jiang(江奇渊)1,2, Bing-Feng Sun(孙兵锋)1,2, Sheng-Bing Shi(史圣兵)3, Shi-Yu Guan(管世钰)1,2, Yu-Xiao Wang(王雨潇)1,2, Zhong-Qi Tan(谭中奇)1,2, and Jie Yuan(袁杰)1,2,‡
1 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China;
2 Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China;
3 The No. 32201st Troop of PLA, Baicheng 137000, China
Abstract  This study is conducted to establish a reliable simulation model for investigating the impact of microwave pulses on the performance of an ensemble nitrogen-vacancy (NV) center system, thereby providing a basis for optimizing microwave parameters and enhancing quantum sensing performance. The simulation of ensemble NV centers is realized through the design of “Single NV Center Module” + “Ensemble Control Module”. Verified by optically detected magnetic resonance (ODMR), Ramsey, and Hahn echo experiments, the program can accurately reproduce the core characteristics of the experiments, confirming the reliability of the model. Using this model to study the influence of microwave spatial inhomogeneity on system performance, it was found that when θ (the range of microwave axial distribution) is 90∘, the sensitivity of the Hahn echo decreases by 3.6 times, and when the amplitude gradient is 50 μT/mm, the sensitivity decreases by 1.8 times, providing quantitative support for optimizing microwave parameters.
Keywords:  microwave pulse sequences      ensemble NV centers      coherence time      spatial inhomogeneity  
Received:  24 August 2025      Revised:  17 November 2025      Accepted manuscript online:  27 November 2025
PACS:  07.55.Ge (Magnetometers for magnetic field measurements)  
  75.40.Mg (Numerical simulation studies)  
  85.75.Ss (Magnetic field sensors using spin polarized transport)  
  42.50.-p (Quantum optics)  
Fund: Project supported by the Autonomous Scientific Research of the College of Frontier Interdisciplinary Sciences, the National University of Defense Technology (Grant No. ZZKY2023-01) and the Research on Key Technologies of Diamond NV Center Clocks.

Cite this article: 

Xu-Bo Liao(廖旭博), Yi Zhang(张燚), Qi-Yuan Jiang(江奇渊), Bing-Feng Sun(孙兵锋), Sheng-Bing Shi(史圣兵), Shi-Yu Guan(管世钰), Yu-Xiao Wang(王雨潇), Zhong-Qi Tan(谭中奇), and Jie Yuan(袁杰) Simulation study on the impact of microwave pulses on performance of ensemble nitrogen-vacancy centers 2026 Chin. Phys. B 35 080701

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