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  • Discipline:

    Condensed Matter Physics,Optics,Acoustics

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Research Field

Current position: Current position: English > Research > Research Field

Our group engages in theoretical, numerical and experimental study of various kinds of wave functional materials, such as photonic/phononic crystals/slabs, metamaterials and metasurfaces. Our research are motivated by simple and beautiful theories and fancy ideas, and will eventually led to applications in signal processing, energy transfer and harvesting.


Our research group is led by Professor Meng Xiao. A few specific examples of our recent interests are:

  • Topological photonics/phononics (See reviews from our group)

  • Synthetic space and higher dimensional physics.

  • Functional metamaterials and photonic/phononic crystals.

  • Non-Hermition systems and exceptional points/lines/surfaces.

  • Optomechanical systems.

  • Novel topological feature of nonlinear systems.

Selected Publications



1. Guancong Ma*, Meng Xiao*, and C. T. Chan, “Topological Phases in Acoustic and Mechanical Systems”, Nat. Rev. Phys. 1, 281 (2019).

2. Xiujuan Zhang*, Meng Xiao*, Ying Cheng*, Ming-Hui Lu, and Johan Christensen, “Topological Sound”, Nat. Commu. Phys. 1 97 (2018).

3. Luqi Yuan, Qian Lin, Meng Xiao, and Shanhui Fan, “Synthetic dimension in Photonics”, Optica 5 1396 (2018).


Regular Papers

1.   Meng Xiao, Z.  Q. Zhang, and C. T. Chan, “Surface impedance and bulk band geometric phases in one-dimensional systems”, Phys. Rev. X 4, 021017 (2014). Web of Science highly cited paper.

2.   Meng Xiao*, Guancong Ma*, Zhiyu Yang, Ping Sheng, Z. Q. Zhang, and C. T. Chan, “Geometric phase and band inversion in periodic acoustic systems”, Nat. Phys. 11, 240 (2015). See also news by Julio T. Barreiro, “Phononic crystals: Entering an acoustic phase”, Nat. Phys. 11, 215 (2015). Web of Science highly cited paper.

3.  Meng Xiao*, Wen-Jie Chen*, Wen-Yu He, and C. T. Chan, "Synthetic gauge flux and Weyl points in acoustic systems", Nature Phys. 11, 920 (2015). Web of Science highly cited paper.

4.  Shubo Wang, Jack Ng, Meng Xiao, and C. T. Chan, "Electromagnetic stress at the boundary: Photon pressure or tension?" Sci. Adv. 2, 1501485 (2016). See also Brandon A. Kemp, “Nanophotonics: Momentum in metamaterials”, Nat. Photon. 10, 291 (2016)

5.  Kun Ding*, Guancong Ma*, Meng Xiao, Z. Q. Zhang, and C. T. Chan, "Emergence, coalescence, and topological properties of multiple exceptional points and their experimental realization", Phys. Rev. X 6, 021007 (2016). Web of Science highly cited paper.

6.   Meng Xiao, Qian Lin, and Shanhui Fan, "Hyperbolic Weyl point in reciprocal chiral metamaterials", Phys. Rev. Lett. 117, 057401 (2016).

7.   Wen-jie Chen, Meng Xiao, and C. T. Chan, "Photonic crystals possessing multiple Weyl points and the experimental observation of robust surface states", Nat. Commun. 7, 13038 (2016). Web of Science highly cited paper.

8.   Qian Lin, Meng Xiao, Luqi Yuan, and Shanhui Fan, "Photonic Weyl point in a two-dimensional resonator lattice with a synthetic frequency dimension", Nat. Commun. 7, 13731 (2016).

9.   Ming-Li Chang, Meng Xiao, Wen-Jie Chen, and C. T. Chan, “Multi Weyl points and the sign change of their topological charges in woodpile photonic crystals”, Phys. Rev. B. 95, 125136 (2017). Editors' Suggestion.

10. Qiang Wang*, Meng Xiao*, Hui Liu, Shining Zhu, and C. T. Chan, “Optical interface states protected by synthetic Weyl points”, Phys. Rev. X 7, 031032 (2017).

11.  Yu Guo, Meng Xiao, and Shanhui Fan, “Topologically protected complete polarization conversion”, Phys. Rev. Lett. 119, 167401 (2017).

12.  Cheng Guo, Meng Xiao, Momchil Minkov, Yu Shi, and Shanhui Fan, “A photonic crystal slab laplace differentiator”, Optica 5 3, 251(2018). Web of Science highly cited paper.

13.  Alexander Cerjan, Meng Xiao, Luqi Yuan, Shanhui Fan, “Effects of non-Hermitian perturbations on Weyl Hamiltonians with arbitrary topological charges”, Phys. Rev. B. 97, 075128 (2018) Editors' Suggestion. Web of Science highly cited paper.

14.  Qian Lin, Xiao-Qi Sun, Meng Xiao, Shou-Cheng Zhang, and Shanhui Fan, “Lattice dislocation in a photonic topological insulator with a synthetic frequency dimension”, Sci. Adv. 4 eaat2774 (2018).

15.  Hanzhe Liu*, Cheng Guo*, Giulio Vampa, Jingyuan Linda Zhang, Tomas Sarmiento, Meng Xiao, Philip H Bucksbaum, Jelena Vučković, Shanhui Fan, and David A Reis. “Enhanced high-harmonic generation from an all-dielectric metasurface”, Nat. Phys. 14 1006 (2018).

16.  Xiao-Qi Sun, Meng Xiao, Tomáš Bzdušek, Shou-Cheng Zhang, and Shanhui Fan, “Three-dimensional Chiral Lattice Fermion in Floquet Systems”, Phys. Rev. Lett. 121 196401 (2018)

17.  Momchil Minkov, Ian Williamson, Meng Xiao, and Shanhui Fan, “On-chip zero index material without radiation loss”, Phys. Rev. Lett. 121 263901(2018)

18.  Yu Guo, Meng Xiao, Yang Zhou, and Shanhui Fan, “Robust complete linear-to-arbitrary polarization conversion”, Adv. Opt. Mat. 1801453 (2019) Impact factor 7.43.

19.  Tianshu Jiang*, Meng Xiao*, Wen-jie chen, Lechen Yang, Yawen Fang, Wing-Yim Tam and C. T. Chan, “Experimental demonstration of angular momentum-dependent topological transport using a transmission line network”, Nat. Commun. 10 434 (2019)

20.  Luqi Yuan, Qian Lin, Anwei Zhang, Meng Xiao, Xianfeng Chen, and Shanhui Fan, “Photonic gauge potential in one cavity with synthetic frequency and orbital angular momentum dimensions”, Phys. Rev. Lett. 122 083903(2019)

21.  Xiying Fan, Chunyin Qiu, Yuanyuan Shen, Hailong He, Meng Xiao, Manzhu Ke, and Zhengyou Liu, “Probing Weyl physics with one-dimensional sonic crystals”,  Phys. Rev. Lett. 122, 136802 (2019).

22.  Ying Li*, Yu-Gui Peng*, Lei Han*, Mohammad-Ali Miri, Wei Li, Meng Xiao, Xue-Feng Zhu, Jianlin Zhao, Andrea Alù, Shanhui Fan, Cheng-Wei Qiu, “Anti-parity-time symmetry in diffusive systems”, Science 364, 170 (2019).

23. Avik Dutt, Qian Lin, Luqi Yuan, Momchil Minkov, Meng Xiao, Shanhui Fan, “A single photonic cavity with two independent physical synthetic dimensions”, Science 367, 59 (2020)

24. Meng Xiao*, Liping Ye*, Chunyin Qiu, Hailong He, Zhengyou Liu, Shanhui Fan, “Experimental demonstration of acoustic semimetal with topologically charged nodal surface”, Sci. Adv. 6 eaav2360 (2020)

25. Cheng Guo, Meng Xiao, Yu Guo, Luqi Yuan, Shanhui Fan ,“Meron Spin Textures in Momentum Space”, Phys. Rev. Lett. 124, 106103 (2020)

26. Xiangxi Cai, Liping Ye,  Chunyin Qiu, Meng Xiao, Rui Yu, Manzhu Ke, Zhengyou Liu, “Symmetry-enforced three-dimensional Dirac phononic crystals”, Light Sci. & Appl. 9, 38 (2020)

27. Yajuan Qi, Chunyin QiuMeng Xiao, Hailong He, Manzhu Ke, and Zhengyou Liu, “Acoustic realization of quadrupole topological insulators”, Phys. Rev. Lett. 124, 206601 (2020)

28. Hailong He, Chunyin Qiu, Xiangxi Cai, Meng Xiao, Manzhu Ke, Fan Zhang, Zhengyou Liu, “Observation of quadratic Weyl points and double-helicoid arcs”, Nat. Commun. 11, 1820 (2020)  

29. Cuicui Lu, Chenyang Wang, Meng Xiao, Z. Q. Zhang, C. T. Chan, “Topological rainbow concentrator based on synthetic dimension”, Phys. Rev. Lett.  126, 113902 (2021)

30. Meng Kang, Shunping ZhangMeng Xiao, Hongxing Xu, “Merging bound states in the continuum at off-high symmetry points”, Phys. Rev. Lett.  126 , 117402  (2021)

31. Zhi-Wei Yan*, Qiang Wang*Meng Xiao, Yu-Le Zhao, Shi-Ning Zhu, and Hui Liu, “Probing rotated Weyl physics on nonlinear lithium niobate-on-insulator chips”, Phys. Rev. Lett. 127, 013901 (2021)

32.  Cheng Guo, Meng Xiao, Meir Orenstein, Shanhui Fan, "Structured 3D linear space–time light bullets by nonlocal nanophotonics", Light: Sci. & App. 10, 160 (2021) 

33. Mengying Hu, Ye Zhang, Xi Jiang, Tong Qiao , Qiang Wang , Shining Zhu, Meng Xiao and Hui Liu, “Double-bowl state in photonic Dirac nodal line semimetal”, Light: Sci. & App. 10, 170 (2021)

34. Huahui Qiu, Meng Xiao, Fan Zhang, and Chunyin Qiu,"Higher-Order Dirac Sonic Crystals", Phys. Rev. Lett. 127, 146601 (2021).

35. Liping Ye , Chunyin Qiu †Meng Xiao , Tianzi Li , Juan Du , Manzhu Ke and Zhengyou Liu ,“Topological dislocation modes in three-dimensional acoustic topological insulators”, Nat. Commu. 13, 508 (2022). 

36. Meng Kang,Li Mao,Shunping Zhang,Meng Xiao †,Hongxing Xu and Che Ting Chan †,"Merging bound states in the continuum by harnessing higher-order topological charges", Light: Sci. & App.  11, 228 (2022).

37. Hao He,Cheng Guo ,Meng Xiao,"Nondispersive Space–Time Wave Packets Propagating in Dispersive Media",Laser & Photonics Reviews (2022).



1. Wen-jie Chen, Ruo-Yang Zhang, Ming-li Chang, Meng Xiao, and C. T. Chan, “Topological Properties of Photonic Crystals”. In the book World Scientific Reference Set on Electromagnetic Analysis, Chapter 4.

2. Xueqin Huang, Meng Xiao, C. T. Chan, and Fengming Liu, “Acoustic metamaterials with conical dispersions”, in the book World Scientific Handbook of Metamaterials and Plasmonics: pp. 553-597.


* Equal contribution, Corresponding author

Full list of papers, please refer to  Google Scholar