Current Group Members

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  Professor Xiaolong Hu

  Ph. D., Massachusetts Institute of Technology, 2011

  Address: Rm. 607, Bldg. 26 C, No. 92 Weijin Road, Tianjin 300072, China

  Tel: 022-27400892

  Email: xiaolonghu@tju.edu.cn

  Dr. Xiaolong Hu is a professor in the Department of Optoelectronic Information Engineering, School of Precision Instrument and Optoelectronic Engineering at Tianjin University. He obtained his B. S. and M. S. degrees from Tsinghua University in 2003 and 2006, respectively, and obtained his Ph. D. degree from the Massachusetts Institute of Technology (MIT) in 2011. His Ph. D. thesis is relevant to superconducting nanowire single-photon detectors (SNSPDs). After postdoctoral training in the University of Michigan (Ann Arbor), Columbia University, and MIT, he joined Tianjin University as a full professor in 2014. 

  Professor Hu is a senior member of IEEE, Optica (formerly OSA), the Chinese Optical Society, and SPIE. In 2013, he was awarded OSA Outstanding Reviewer Award; in 2014, he was awarded Peiyang Scholarship by Tianjin University; in 2015, he was selected into the national talent program for junior scholars. He is now serving as an associate editor of Optics Continuum, an associate editor of Frontiers in Photonics (Quantum Optics  specialty section), an early-career editorial board member of Frontiers of Optoelectronics, an editorial board member of Scientific Reports, a committee member of the superconducting-electronics sub-society, Electronic Society of China, and the faculty advisor for the Optica (formerly OSA) Student Chapter and the SPIE Student Chapter at Tianjin University. He has occasionally served as a consultant to government organizations.

  Professor Hu’s research focuses on nanophotonic devices and nanofabrication, and is also relevant to mode-division multiplexing technology and stretchable electronics. In his Ph. D. thesis work at MIT, he did an early demonstration of a fiber-coupled SNSPD system with efficiency exceeding 20% (Optics Letters 2009), applied the SNSPD system in quantum optic measurement with collaborators (Optics Letters 2010), and proposed waveguide-integrated SNSPDs (IEEE TAS 2009). Now, waveguide-integrated SNSPDs have become a mainstream device structure of SNSPDs for integrated quantum-photonic chips. At Tianjin University where he is leading the research group, he reported on two mechanisms of device timing jitter of SNSPDs (two back-to-back papers in Applied Physics Letters 2017), proposed and demonstrated the fractal SNSPDs with low polarization sensitivity (Optics Letters 2018, Optics Letters 2020, ACS Photonics 2022, Optica 2022), boosted the system detection efficiency of the fractal SNSPDs to 91% at the wavelength of 1540 nm (Optics Letters 2023), and proposed the superconducting nanowire multi-photon detectors integrated with current reservoirs (Photonics Research 2020, Physical Review Applied 2020). As a major co-inventor, he co-invented a nanofabrication process to integrate commercial electronic and optoelectronic components into mechanically stretchable systems (Advanced Materials 2011, US Patents no. 9159635, no. 9723711). He established and experimentally validated a model describing Rayleigh scattering in few-mode optical fibers (OFC 2016, Scientific Reports 2016). 

  Professor Hu is also interested in studying the critical-transition periods in education. In 2020 he published his book, Smoothing a Critical Transition: Nontechnical Knowledge and Techniques for Student Researchers, which intends to bridge the gap between the classrooms and the laboratories and helps students transit towards junior student researchers.

  Professor Hu is teaching two courses at Tianjin University: a graduate-level course, Research Methodology in Optical Engineering (course number: S2020005), and an undergraduate-level course, Fundamentals of Optoelectronics (course number: 2020634). Both courses are offered in English and in the spring semesters.

  With exposure to the internationally collaborative environment and trainings in the cutting-edge research projects, the graduate and undergraduate students that Professor Hu mentored have received awards including National Scholarship and SPIE Optics and Photonics Education Scholarship; and after graduation, they either advance their study in the University of Tokyo, the University of Michigan, the University of Central Florida, the Eindhoven University of Technology, and Tsinghua University, or they work in industry in Sinopec, National Instruments, and Accelink Technologies.

   

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  Zhao Wang

  Tianjin University

  Ph. D. Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Mr. Zhao Wang received his B. S. degree in Optoelectronics Information Science and Engineering from Changchun University of Science and Technology in 2018. His current research focuses on power-monitoring devices and silicon photonic chips, including device design and testing. 

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  Yun Meng

  Tianjin University

  Ph. D. Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Mr. Yun Meng received his B. S. degree in Applied Physics from Southwest Jiaotong University in 2018. His current research focuses on superconducting nanowire single-photon detectors (SNSPDs), including fractal SNSPDs with reduced polarization sensitivity, SNSPDs with low timing jitter, device physics and design of the SNSPDs, and building and testing SNSPD systems. He is a recipient of 2023 SPIE Optics and Photonics Education Scholarship.

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  Kai Zou

  Tianjin University

  Ph. D. Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Mr. Kai Zou received his B. S. degree in Optical Engineering from Tianjin University in 2019. His current research focuses on superconducting nanowire single-photon detectors  and multi-photon detectors, and silicon-photonic devices. He is an awardee of National Scholarship 2020 for Graduate Students and a recipient of 2022 SPIE Optics and Photonics Education Scholarship.

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  Yifan Feng

  Tianjin University

  Master-Course Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Mr. Yifan Feng received his B. S. degree in Optoelectronics Information Science and Engineering from Tianjin University in 2021. His current research focuses on various applications of superconducting nanowire single-photon detector systems, faint-light detection at infrared, and also nanofabrication.

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  Zifan Hao

  Tianjin University

  Master-Course Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Mr. Zifan Hao received his B. S. degree in Optoelectronics Information Science and Engineering from Tianjin University in 2021. His current research focuses on testing and applications of infrared photodetectors.

  
  

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  Jing Li

  Tianjin University

  Ph. D. Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Ms. Jing Li received her B. S. degree in Communication Engineering from Heilongjiang University of Science and Technology in 2018 and her M. S. degree in Electronic and Communication Engineering from the North University of China in 2022. She is currently involved in research of testing nanophotonic devices.

  
  

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  Chang Xu

  Tianjin University

  Master-Course Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Mr. Chang Xu received his B. S. degree in Optoelectronics Information Science and Engineering from Nanjing Tech University in 2022. His current research focuses on superconducting nanowire single-photon detectors and multi-photon detectors.

  
  

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  Haomiao Song

  Tianjin University

  Master-Course Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Ms. Haomiao Song received her B. S. degree in Optoelectronics Information Science and Engineering from Hefei University of Technology in 2023. She is currently involved in research of nanophotonic devices.

  
  

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  Song Li

  Tianjin University

  Master-Course Student

  Rm. 203, Peiyang Science Building, No. 92 Weijin Road, Tianjin 300072, China

  Mr. Song Li received his B. S. degree in Optoelectronics Information Science and Engineering from Sichuan University in 2023. He is currently involved in research of nanophotonic devices.