Education

• Ph.D.  Electrical Engineering, Yale University (2018)
• B.S.  Physics, Peking University, China (2011)

Professional Experience

• Assistant Scientist, Center for Nanoscale Materials, Argonne (2019 - present)
• Postdoctoral Associate, Yale University (2018 - 2019)

Research Areas

• High-frequency piezo-mechanics, cavity optomechanics, nano-electromechanics
• Quantum interface between nano-photonic circuits and superconducting qubits
• Coherent conversion and entanglement generation between microwave and optical photons
• Multimode superconducting cavity electromechanics
• Nonlinear superconducting hybrid systems

Recent Publications

• X. Han, C.-L. Zou, W. Fu, M. Xu, Y. Xu, and H. X. Tang, Superconducting Cavity Electromechanics: The Realization of an Acoustic Frequency Comb at Microwave Frequencies, Phys. Rev. Lett. 129, 107701 (2022).
• X. Zhou, G. Koolstra, X. Zhang, G. Yang, X. Han, B. Dizdar, X. Li, D. Ralu, W. Guo, K. W. Murch, D. I. Schuster, D. Jin, Electron on solid neon -- a new solid-state single-electron qubit platform, Nature 605, 46 (2022).
• X. Han, W. Fu, C.-L. Zou, L. Jiang, H. X. Tang, Microwave-optical quantum frequency conversion, Optica 8, 1050 (2021).
• J. Xu, C. Zhong, X. Han, D. Jin, L. Jiang, and X. Zhang, Coherent Gate Operations in Hybrid Magnonics, Phys. Rev. Lett. 126, 207202 (2021).
• Z. Wang, M. Xu, X. Han, W. Fu, S. Puri, S. M. Girvin, H. X. Tang, S. Shankar, and M. H. Devoret, Quantum microwave radiometry with a superconducting qubit, Phys. Rev. Lett. 126, 180501 (2021).
• J. Xu, C. Zhong, X. Han, D. Jin, L. Jiang, and X. Zhang, Floquet Cavity Electromagnonics, Phys. Rev. Lett. 125, 237201 (2020).
• N. Zhu, X. Zhang, X. Han, C.-L. Zou, C. Zhong, C.-H. Wang, L. Jiang, and H. X. Tang, Waveguide cavity optomagnonics for microwave-to-optics conversion, Optica 10, 1291 (2020).
• X. Han, W. Fu, C. Zhong, C.-L. Zou, Y. Xu, A. A. S., M. Xu, S. Wang, R. Cheng, L. Jiang, and H. X. Tang, Cavity piezo-mechanics for superconducting-nanophotonic quantum interface, Nat. Commun. 11, 3237 (2020).
• X. Zhou, X. Han, D. Koelle, R. Kleiner, X. Zhang, and D. Jin, On-chip sensing of hotspots in superconducting terahertz emitters, Nano Lett. 20, 4197 (2020).
• X. Zhang, A. Galda, X. Han, D. Jin, and V. M. Vinokur, Broadband nonreciprocity enabled by strong coupling of magnons and microwave photons, Phys. Rev. Applied 13, 044039 (2020).
• C. Zhong, X. Han, H. X. Tang, and L. Jiang, Entanglement of microwave–optical Modes in a strongly coupled electro-optomechanical system, Phys. Rev. A 101, 032345 (2020).
• M. Xu, X. Han, C.-L. Zou, W. Fu, Y. Xu, C. Zhong, L. Jiang, and H. X. Tang, Radiative ground state cooling of a superconducting resonator, Phys. Rev. Lett. 124, 033602 (2020).
• C. Zhong, Z. Wang, C.-L. Zou, M. Zhang, X. Han, W. Fu, M. Xu, S. Shankar, M. H. Devoret, H. X. Tang, and L. Jiang, Proposal for heralded generation and detection of entangled microwave-optical photon pairs, Phys. Rev. Lett. 124, 010511 (2020).
• R. Cheng, C.-L. Zou, X. Guo, S. Wang, X. Han, and H. X. Tang, Broadband on-chip single-photon spectrometer, Nat. Commun. 10, 4104 (2019).
• W. Fu, Z. Shen, Y. Xu, C.-L. Zou, R. Cheng, X. Han, and H. X. Tang, Photonic integrated circuitry and spin-orbit interaction of phonons, Nat. Commun. 10, 2743 (2019).
• M. Xu^*, X. Han^*, W. Fu, C. Zou, M. H. Devoret, and H. X. Tang, Frequency-tunable high-Q superconducting resonators via wireless control of nonlinear kinetic inductance, Appl. Phys. Lett. 114, 192601 (2019).
• L. Fan, C.-L. Zou, R. Cheng, X. Guo, X. Han, Z. Gong, S. Wang, and H. X. Tang, Superconducting cavity electro-optics: A platform for coherent photon conversion between superconducting and photonic circuits, Sci. Adv. 4, eaar4994 (2018).
• X. Han, C.-L. Zou, and H. X. Tang, Multimode strong coupling in superconducting cavity piezoelectromechanics, Phys. Rev. Lett. 117, 123603 (2016).
• C.-L Zou, X. Han, L. Jiang, and H. X. Tang, Cavity piezomechanical strong coupling and frequency conversion on an aluminum nitride chip, Phys. Rev. A 94, 013812 (2016).
• L. Fan, C.-L. Zou, M. Poot, R. Cheng, X. Guo, X. Han, and H. X. Tang, Integrated optomechanical single-photon frequency shifter, Nat. Photon. 10, 766 (2016).
• X. Han, K. Y. Fong, and H. X. Tang, A 10-GHz film-thickness-mode cavity optomechanical resonator, Appl. Phys. Lett. 106, 161108 (2015).
• X. Han, C. Xiong, K. Y. Fong, X. Zhang, and H. X. Tang, Triply resonant cavity electro-optomechanics at X-band, New J. Phys. 16, 063060 (2014).