Welcome to Nan Zhao's Homepage ****************************** **Contact Information** ======================= .. rst-class:: floater .. figure:: ./imag/qrcode.png :width: 200px :height: 200px :align: right QR code of the contact info. +-------+------------------------------------------------------------+ |Email | `nzhao [at] csrc [dot] ac [dot] cn `_ | +-------+------------------------------------------------------------+ |Tel. |+86 - 10 - 5698 1837 | +-------+------------------------------------------------------------+ |Mobile |+86 - 186 1174 0256 | +-------+------------------------------------------------------------+ |Skype | nan.zhao2007 | +-------+------------------------------------------------------------+ |Address| Room B418, Beijing Computational Science Research Center, | | | | | | Zhongguancun Software Park II, No.10 West Dongbeiwang Road,| | | | | | Haidian District, Beijing 100094, China | +-------+------------------------------------------------------------+ |Website| http://www.csrc.ac.cn/~nzhao/ | +-------+------------------------------------------------------------+ **News** ======== * [08 Mar 2025] **Communications Physics** publishes our recent work `Frequency shift caused by nonuniform field and boundary relaxation in magnetic resonance and comagnetometers `_. In this work, we proposed a model to analyze the systematic error caused by nonuniform field and boundary relaxation in an NMR gyroscope. .. image:: ./_static/error_model.png :width: 600px :align: center :alt: error_model * [25 Jan 2025] **IEEE Sensors Journal** publishes our recent work `Planar Coil Design for Nuclear Magnetic Resonance Gyroscope Using Genetic Algorithm `_. In this work, we designed and implemented a planar coil design for an NMR gyroscope using a genetic algorithm. .. image:: ./_static/ga.png :width: 400px :align: center :alt: ga * [06 Jan 2025] **Physical Review A** publishes our recent work `Magnetic-resonance linewidth of alkali-metal vapor in the unresolved Zeeman-resonance regime `_. In this work, we developed the theory of magnetic-resonance linewidth of alkali-metal vapor in the unresolved Zeeman-resonance regime. .. image:: ./_static/linewidth.png :width: 400px :align: center :alt: linewidth * [24 Jan 2024] **Physical Review Applied** publishes our recent work `Stability improvement of nuclear magnetic resonance gyroscope with self-calibrating parametric magnetometer `_. In this work, we improved the stability of nuclear magnetic resonance gyroscope by using a self-calibrating parametric magnetometer. With this method, the Allan deviation of **0.2 deg/hr** for datasets of 8h, or **0.02deg/hr** for the best approximately 5000 s data set was achieved. .. image:: ./_static/stability.png :width: 400px :align: center :alt: stability * [10 Jan 2023] **Physical Review Letters** publishes our recent work `Stable Atomic Magnetometer in Parity-Time Symmetry Broken Phase `_. In this work, we experimentally observed the *PT* transition of diffusive nuclear spins, and demonstrated a PT-transition assisted stable magnetometer, which could be useful in measurement weak magnetic fields. .. image:: ./_static/pt.png :width: 400px :align: center :alt: PT-transition * [17 August 2021] **Physical Review A** publishes our recent work `Spin-polarization dependence of the Rb-Xe spin-exchange optical pumping process `_. In this work, we experimentally measured the spin-exchange pumping rate between Rb-Xe atoms under different optical pumping conditions of Rb atoms. .. image:: ./_static/spin_exchange.png :width: 400px :align: center :alt: spin_exchange * [29 April 2020] **Physical Review Letters** publishes our recent collaboration work `Sensing Individual Nuclear Spins with a Single Rare-Earth Electron Spin `_. The experiment part of this work was completed in the `Stuttgart group `_. We did theoretical analysis of the spin dynamics in this work. .. image:: ./_static/rare_earth_small.png :width: 400px :align: center :alt: rare-earth * [26 March 2020] **Physical Review Letters** publishes our recent work `Magnetic Noise Enabled Biocompass `_. .. image:: ./_static/biocompass.jpeg :width: 400px :align: center :alt: biocompass .. comment * [01 November 2019] Post-doc and PhD student vacancies (experiment) available! `Contact me `_ and join us! .. comment .. image:: ./_static/lab201910.jpeg :width: 400px :align: center :alt: Lab 201910 .. comment * [20 April 2019] Moving into our new lab! .. comment .. image:: ./_static/newLab.jpg :width: 400px :align: center :alt: New optical tables .. rst-class:: html-toggle **About Me** ============ Education +++++++++ +-----------------------+----------------------------------------------+-------------------------------------+ | Sep. 1999 − Jul. 2003 | Department of Physics, Tsinghua University. |**Bachelor** of Science. | +-----------------------+----------------------------------------------+-------------------------------------+ | Sep. 2003 − Jul. 2008 | Department of Physics, Tsinghua University. |**Ph.D.**, Condensed matter physics. | | | |Supervisor Prof. Jia-Lin Zhu. | +-----------------------+----------------------------------------------+-------------------------------------+ Research Experience +++++++++++++++++++ +-----------------------+-----------------------------------------------------+----------------------------------------------------+ | Jul. 2008 − Nov. 2008 | Institution of Theoretical Physics, |- **Visiting scholar** | | | Chinese Academy of Science |- Collaborator Prof. Chang-Pu Sun | +-----------------------+-----------------------------------------------------+----------------------------------------------------+ | Dec. 2008 − Jun. 2009 | Department of Physics, |- **Visiting scholar** | | | The Chinese University of Hong Kong |- Collaborator Prof. Ren-Bao Liu | +-----------------------+-----------------------------------------------------+----------------------------------------------------+ | Sep. 2009 − Aug. 2011 | Department of Physics, |- **Postdoctoral Fellow** | | | The Chinese University of Hong Kong |- Collaborator Prof. Ren-Bao Liu | +-----------------------+-----------------------------------------------------+----------------------------------------------------+ | Sep. 2011 − Aug. 2012 | The 3rd Institute of Physics, |- **Postdoctoral Fellow** | | | Stuttgart University |- Collaborator Prof. Jörg Wrachtrup | +-----------------------+-----------------------------------------------------+----------------------------------------------------+ | Sep. 2012 - Aug. 2018 | Quantum Physics and Quantum Information Division, |- **Assistant Professor** | | | CSRC | | +-----------------------+-----------------------------------------------------+----------------------------------------------------+ | Sep. 2018 - now | Quantum Physics and Quantum Information Division, |- **Associate Professor** | | | CSRC | | +-----------------------+-----------------------------------------------------+----------------------------------------------------+ **Research Interests** ======================= We are currently performing two research projects. For more information, please click the following links. .. toctree:: :maxdepth: 2 :glob: research_atoms .. include ./research_atoms.rst .. toctree:: :maxdepth: 2 :glob: research_solids .. include ./research_solids.rst .. rst-class:: html-toggle **Selected Publications** ========================= Click `here (Google Scholar) `_ or `Research ID `_ for the full publication record and statistics. 1. `Frequency shift caused by nonuniform field and boundary relaxation in magnetic resonance and comagnetometers `_, Xiangdong Zhang, Jinbo Hu, Da-Wu Xiao, and **Nan Zhao**, *Communications Physics* **8** 93 (2025). 2. `Magnetic-resonance linewidth of alkali-metal vapor in the unresolved Zeeman-resonance regime `_, Feng Tang and **Nan Zhao**, *Physical Review A* **111** 013103 (2025). 3. `Stability improvement of nuclear magnetic resonance gyroscope with self-calibrating parametric magnetometer `_, Guoping Gao, Jinbo Hu, Feng Tang, Wenhui Liu, Xiangdong Zhang, Baoxu Wang, Dongge Deng, Mingzhi Zhu, and **Nan Zhao**, *Physical Review Applied* **21** 014042 (2024). 4. `Stable Atomic Magnetometer in Parity-Time Symmetry Broken Phase `_, Xiangdong Zhang, Jinbo Hu, and **Nan Zhao**, *Physical Review Letters* **130** 023201 (2023). 5. `Spin-polarization dependence of the Rb-Xe spin-exchange optical pumping process `_, Bowen Song, Yanhua Wang, and **Nan Zhao**, *Physical Review A* **104** 023105 (2021). 6. `Magnetic Noise Enabled Biocompass `_, Da-Wu Xiao, Wen-Hui Hu, Yunfeng Cai, and **Nan Zhao**, *Physical Review Letters* **124** 128101 (2020). 7. `Electron spin decoherence in silicon carbide nuclear spin bath `_, Yang, L.-P., Burk, C., Widmann, M., Lee, S.-Y., Wrachtrup, J., & **Zhao, Nan**, *Physical Review B* **90**, 241203(R) (2014). 8. `Coherent properties of single rare-earth spin qubits `_, Siyushev, P., Xia, K., Reuter, R., Jamali, M., **Zhao, N.**\*, Yang, N., Duan, C., Kukharchyk, N., Wieck, A.D., Kolesov, R.\*, & Wrachtrup, J. *Nature Communications* **5**, 3895. doi:10.1038/ncomms4895 (2014) [\* corresponding authors]. 9. `Sensing single remote nuclear spins `_, **Zhao, Nan***, Honert, Jan*, Schmid, Bernhard, Klas, Michael, Isoya, Junichi, Markham, Matthew, et. al., *Nature Nanotechnology* **7**, 657 (2012) [* these authors contributed equally]. 10. `Decoherence and dynamical decoupling control of nitrogen vacancy center electron spins in nuclear spin baths `_, **Zhao, Nan**; Ho, Sai-Wah; Liu, Ren-Bao, *Physical Review B* **85**, 115303 (2012). 11. `Atomic-scale magnetometry of distant nuclear spin clusters via nitrogen-vacancy spin in diamond `_, **Zhao, Nan**, Hu, Jian-Liang, Ho, Sai-Wah, Wan, J.T.K., Liu, R.B. *Nature Nanotechnology* **6**, 242 (2011). 12. `Preserving electron spin coherence in solids by optimal dynamical decoupling `_, Du, Jiangfeng, Rong, Xing, **Zhao, Nan**, Wang, Ya, Yang, Jiahui, Liu, R B *Nature* **461**, 1265 (2009). .. rst-class:: html-toggle **Research Group** ================== .. toctree:: :maxdepth: 2 :glob: people_institute .. include ./people_institute.rst .. toctree:: :maxdepth: 2 :glob: group_photo .. include ./group_photo.rst **Resources** ============= 1. :download:`Quantum Sensing <./_static/BNU_QuantumSensing.pdf>` [22 MB]: an introductory talk in BNU, 13 May 2022.