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  1. Article

    Open Access

    Topological phononics arising from fluid-solid interactions

    Nontrivial band topologies have been discovered in classical systems and hold great potential for device applications. Unlike photons, sound has fundamentally different dynamics and symmetries in fluids and so...

    **aoxiao Wu, Haiyan Fan, Tuo Liu, Zhongming Gu, Ruo-Yang Zhang in Nature Communications (2022)

  2. Article

    Open Access

    Observation of boundary induced chiral anomaly bulk states and their transport properties

    The most useful property of topological materials is perhaps the robust transport of topological edge modes, whose existence depends on bulk topological invariants. This means that we need to make volumetric c...

    Mudi Wang, Qiyun Ma, Shan Liu, Ruo-Yang Zhang, Lei Zhang in Nature Communications (2022)

  3. Article

    Open Access

    Four-band non-Abelian topological insulator and its experimental realization

    Very recently, increasing attention has been focused on non-Abelian topological charges, e.g., the quaternion group Q8. Different from Abelian topological band insulators, these systems involve multiple entangled...

    Tianshu Jiang, Qinghua Guo, Ruo-Yang Zhang, Zhao-Qing Zhang in Nature Communications (2021)

  4. No Access

    Article

    Experimental observation of non-Abelian topological charges and edge states

    In the last few decades, topological phase111 has emerged as a new classification of matter states beyond the Ginzburg–Landau symmetry-breaking paradigm. The underlying global invariant is usually well character...

    Qinghua Guo, Tianshu Jiang, Ruo-Yang Zhang, Lei Zhang, Zhao-Qing Zhang, Biao Yang in Nature (2021)

  5. Article

    Open Access

    Momentum space toroidal moment in a photonic metamaterial

    Berry curvature, the counterpart of the magnetic field in the momentum space, plays a vital role in the transport of electrons in condensed matter physics. It also lays the foundation for the emerging field of...

    Biao Yang, Yangang Bi, Rui-**ng Zhang, Ruo-Yang Zhang, Oubo You in Nature Communications (2021)

  6. Article

    Open Access

    Non-Abelian gauge field optics

    The concept of gauge field is a cornerstone of modern physics and the synthetic gauge field has emerged as a new way to manipulate particles in many disciplines. In optics, several schemes of Abelian synthetic...

    Yuntian Chen, Ruo-Yang Zhang, Zhongfei **ong, Zhi Hong Hang in Nature Communications (2019)

  7. Article

    Open Access

    Time Circular Birefringence in Time-Dependent Magnetoelectric Media

    Light traveling in time-dependent media has many extraordinary properties which can be utilized to convert frequency, achieve temporal cloaking and simulate cosmological phenomena. In this paper, we focus on t...

    Ruo-Yang Zhang, Yan-Wang Zhai, Shi-Rong Lin, Qing Zhao, Weijia Wen in Scientific Reports (2015)