Connor Hart
QTC Scientist
Ph.D. Physics, Harvard University, 2020
B.S. Physics, University of Maryland, College Park, 2015
Connor’s research focuses on the development of quantum sensors based on nitrogen vacancy center defects in diamond for applications such as bulk vector magnetometry and wide-field magentic imaging. In particular, he pursues, in close collaboration with others in the group, the realization of techniques to improve NV-diamond magnetic sensitivity and robustness against material, environmental, and experimental imperfections. His graduate work has also included the development of NV-based characterization techniques to better inform the development of diamond material tailored to magnetic sensing applications.
Notable Publications
- All-optical photoluminescence response of nitrogen-vacancy ensembles in diamond at low magnetic fields. . Phys. Rev. Appl. 24, 064049 (2025). link PDF arXiv
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- Characterization of low-nitrogen quantum diamond for pulsed magnetometry applications. . Frontiers in Quantum Science and Technology Volume 4 - 2025 (2025). link PDF supplement arXiv
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- High-resolution and wide-frequency-range magnetic spectroscopy with solid-state spin ensembles. . npj Quantum Information 11 (2025). link PDF supplement arXiv
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- AC magnetometry in the strong drive regime with NV centers in diamond. . arXiv:2510.05471v1 (2025). PDF arXiv
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- All-in-one quantum diamond microscope for sensor characterization. . AVS Quantum Science 6, 044403 (2024). link PDF supplement arXiv
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- Quantum diamond microscope for narrowband magnetic imaging with high spatial and spectral resolution. . Phys. Rev. Appl. 22, 054050 (2024). link PDF arXiv
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- Ramsey envelope modulation in NV diamond magnetometry. . Phys. Rev. B 106, 054110 (2022). link PDF supplement arXiv
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- High-Precision Mapping of Diamond Crystal Strain Using Quantum Interferometry. . Phys. Rev. Applied 17, 024041 (2022). link PDF arXiv
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- Multiplexed Sensing of Magnetic Field and Temperature in Real Time Using a Nitrogen-Vacancy Ensemble in Diamond. . Phys. Rev. Applied 17, 014009 (2022). link PDF supplement arXiv
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- Characterisation of CVD diamond with high concentrations of nitrogen for magnetic-field sensing applications. . Materials for Quantum Technology 1, 025001 (2021). link PDF
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- N–V–Diamond Magnetic Microscopy Using a Double Quantum 4-Ramsey Protocol. . Phys. Rev. Applied 15, 044020 (2021). link PDF supplement arXiv
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- Decoherence of ensembles of nitrogen-vacancy centers in diamond. . Phys. Rev. B 102, 134210 (2020). link PDF arXiv
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- Microwave-Assisted Spectroscopy Technique for Studying Charge State in Nitrogen-Vacancy Ensembles in Diamond. . Physical Review Applied 14, 014009 (2020). link PDF arXiv
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- Generation of nitrogen-vacancy ensembles in diamond for quantum sensors: Optimization and scalability of CVD processes. . arXiv:2004.01746 [cond-mat, physics:quant-ph] (2020). PDF arXiv
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- Sensitivity optimization for NV-diamond magnetometry. . Reviews of Modern Physics 92, 015004 (2020). link PDF arXiv
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- Imaging crystal stress in diamond using ensembles of nitrogen-vacancy centers. . Physical Review B 100, 174103 (2019). link PDF supplement arXiv
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- Principles and techniques of the quantum diamond microscope. . Nanophotonics 8, 1945–1973 (2019). link PDF
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- Decoherence of dipolar spin ensembles in diamond. . arXiv:1904.08763 [physics, physics:quant-ph] (2019). PDF arXiv
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- Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control. . Physical Review X 8, 031025 (2018). link PDF supplement arXiv
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