Decorrelation in Complex Wave Scattering Permalink
Q. Zhang, H. Yue, N. Liu, D. Xu, R. Zhou, L. Cao, G. Barbastathis."Decorrelation in Complex Wave Scattering." Arxiv preprint. 2504.11330 (2025). .
Qihang Zhang's resume
Education
- 2018 - 2023 Ph.D in EECS, Massachusetts Institute of Technology
- Advisor: George Barbastathis
- 2014 - 2018 B.S. in Physics, Tshinghua University
- Advisor: Yulin Chen & Lexian Yang
Work experience
- 2025 - present Research Assistant Professor, The Chinese University of Hong Kong
- 2023 - 2025 Postdoctoral Fellow, Tsinghua University
Main research interests
- The statistical mechanism of optical scattering phenomena, including their wavelength, polarization, spatial distribution and quantum properties;
- AI+Physics algorithm for scattering related optical sensing and imaging tasks;
- Advanced optical systems for biomedical and manufacturing applications.
Publications
Non-invasive estimation of the powder size distribution from a single speckle image Permalink
Q. Zhang, A. Pandit, Z. Liu, Z. Guo, S. Muddu, Y. Wei, D. Pereg, N. Nazemifard, C. Papageorgiou, Y. Yang, W. Tang, R. D. Braatz, A. S. Myerson & G. Barbastathis. "Non-invasive estimation of the powder size distribution from a single speckle image." Light: Science and Applications. 13, 200 (2024).
Noise-resilient deep learning for integrated circuit tomography Permalink
Z. Guo, Z. Liu, G. Barbastathis, Q. Zhang, M. E. Glinsky, B. K. Alpert, and Z. H. Levine. "Noise-resilient deep learning for integrated circuit tomography." Optics Expres. 31, 10 (2023).
Extracting particle size distribution from laser speckle with a physics-enhanced autocorrelation-based estimator (PEACE) Permalink
Q. Zhang, J. C. Gamekkanda, A> Pandit, W. Tang, C. Papageorgiou, C. Mitchell, Y. Yang, M. Schwaerzler, T. Oyetunde, R. D. Braatz, A. S. Myerson & G. Barbastathis."Extracting particle size distribution from laser speckle with a physics-enhanced autocorrelation-based estimator (PEACE)." Nature Communications. 14, 1159 (2023).
Thermal imaging-based state estimation of a Stefan problem with application to cell thawing Permalink
P. Srisuma, A. Pandit, Q. Zhang, M. S. Hong, J. Gamekkanda, F. Fachin, N. Moore, D. Djordjevic, M. Schwaerzler, T. Oyetunde, W. Tang, A. S. Myerson, G. Barbastathis, R. D. Braatz. "Thermal imaging-based state estimation of a Stefan problem with application to cell thawing." Computers & Chemical Engineering. 173, 108179 (2023).
Spectroscopy signatures of electron correlations in a trilayer graphene/hBN moiré superlattice Permalink
J. Yang+, G. Chen+, T. Han+, Q. Zhang, Y. Zhang, L. Jiang, B. Lyu, H. Li, K. Watanabe, T. Taniguchi, Z. Shi, T. Senthil, Y. Zhang, F. Wang, and L. Ju. "Spectroscopy signatures of electron correlations in a trilayer graphene/hBN moiré superlattice." Science. 375, 6586 (2022).
Transient Tap Couplers for Wafer-Level Photonic Testing Based on Optical Phase Change Materials Permalink
Y. Zhang, Q. Zhang, C. Ríos, M. Y. Shalaginov, J. B. Chou, C. Roberts, P. Miller, P. Robinson, V. Liberman, M. Kang, K. A. Richardson, T. Gu, S. A. Vitale, J. Hu. "ransient Tap Couplers for Wafer-Level Photonic Testing Based on Optical Phase Change Materials." ACS Photonics. 8, 7 (2021).
Accurate Measurement of the Gap of Graphene/ℎ−BN Moiré Superlattice through Photocurrent Spectroscopy Permalink
T. Han, J. Yang, Q. Zhang, L. Wang, K. Watanabe, T. Taniguchi, P. L. McEuen, L. Ju. "Accurate Measurement of the Gap of Graphene/ℎ−BN Moiré Superlattice through Photocurrent Spectroscopy." Physical Review Letters. 126, 146402 (2021).
Recurrent neural network reveals transparent objects through scattering media Permalink
I. Kang, S. Pang, Q. Zhang, N. Fang, and G. Barbastathis. "Recurrent neural network reveals transparent objects through scattering media." Optics Express. 29, 4 (2021).
Broadband nonvolatile photonic switching based on optical phase change materials: beyond the classical figure-of-merit Permalink
Q. Zhang, Y. Zhang, J. Li, R. Soref, T. Gu, and J. Hu. "Broadband nonvolatile photonic switching based on optical phase change materials: beyond the classical figure-of-merit. " Optics Letters. 43, 1 (2017).
Lifshitz Transitions Induced by Temperature and Surface Doping in Type-II Weyl Semimetal Candidate Td-WTe2 Permalink
Q. Zhang, Z. Liu, Y. Sun, H. Yang, J. Jiang, S. Mo, Z. Hussain, X. Qian, L. Fu, S. Yao, M. Lu, C. Felser, B. Yan, Y. Chen, L. Yang. "Lifshitz Transitions Induced by Temperature and Surface Doping in Type-II Weyl Semimetal Candidate Td-WTe2." Physica Status Solidi Rapid Research Letter. 11, 12 (2017).
Patents
System and Method for Real-time Determination of Particle Size Distributions in Dry Powders Permalink
Q. Zhang, A. Pandit, A. S. Myerson, G. Barbastathis, J. C. Gamekkanda, R. D. Braatz, Z. Guo. "System and Method for Real-time Determination of Particle Size Distributions in Dry Powders." PCT Patent. WO2023172304A1, filed 16-Nov-2022.
Pupil Engineering Method to Enhance the Signal of the Real-time Determination of Particle Size Distribution in Powders Permalink
Q. Zhang, A. Pandit, A. S. Myerson, G. Barbastathis, J. C. Gamekkanda, R. D. Braatz, Z. Guo. "Pupil Engineering Method to Enhance the Signal of the Real-time Determination of Particle Size Distribution in Powders." PCT Patent. WO2023172305A1, filed 16-Nov-2022.
Talks
Single-frame tomographic phase cytometry for large-scale live cell analysis
Conference talk at The 33rd International Congress on High-speed Imaging and Photonics (ICHSIP-33), Shenzhen, China
Coherence evolution analysis in optical scattering and related applications
Conference talk at The 5th International Conference on Computational Imaging (CITA2025), Suzhou, China
光散射中的遗忘效应
Conference talk at 全国激光技术与光电子学学术会议 (LTO2025), Shanghai, China
基于散斑学习的单帧定量颗粒度表征
Conference talk at 第十三届中国颗粒大会, Suzhou, China
Universal Correlation Analysis in Complex Wave Scattering
Conference talk at Optics Imaging Congress 2024, Toulouse, France
Universal Correlation Analysis in Complex Light Scattering
Invited talk at Yau Mathematical Sciences Center, Beijing, China
基于激光散斑的定量颗粒度表征
Conference talk at 第一届中国光学工程学会青年科学家大会, Nanjing, China
Universal Correlation Analysis in Complex Wave Scattering
Invited talk at Nanyang Technological University, Singapore, Singapore
激光散斑与散射表面关联性的智能分析
Conference talk at LASER-World of Photonics 2024, Shanghai, China
Quantitative Speckle Analysis to Estimate Surface Particle Size Distribution
Conference talk at Optics Imaging Congress 2023, Boston, USA
Teaching
Service and leadership
- Journal reviewer of Photonics Research, Optics Express, Journal of the Optical Society of America A, and Advanced Materials.
Honors and awards
- Shuimu Tsinghua Scholar (2024)
- Chi-Sun Yeh Prize (2018) (Top undergraduate honor in physics department, Tsinghua University)
- Outstanding Graduates of Tsinghua University (2018)
- National Scholarship (2017)
- Future Scholar Project (2017)
- Tsinghua Academy program Scholarship (2015 & 2016)
- Tsinghua Xuetang Talents Program Scholarship (2015 & 2016)
- Tsinghua University Scholarship For Freshmen (2014)
- Golden Prize (Nationwide rank 8) in Chinese Physics Olympiad (CPhO) 全国中学生物理竞赛 (2013)
- Best Theory Prize in Chinese Physics Olympiad (CPhO) 全国中学生物理竞赛 (2013)