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3篇 您的检索式:作者名="Che Ting Chan"
    题名 作者 年代 出处 被引量
1Endovascular Repair for Thoracic Aortic Pathologies—Early and Midterm Results显示文摘Albert C.W. Ting Stephen W.K. Cheng Pei Ho Yiu Che Chan Jensen T.C. Poon Grace C.Y. Cheung 2009Asian Journal of Surgery2009,,1:1
2Merging bound states in the continuum by harnessing higher-order topological charges显示文摘Bound states in the continuum(BICs)can confine light with a theoretically infinite Q factor.However,in practical on-chip resonators,scattering loss caused by inevitable fabrication imperfection leads to finite Q factors due to the coupling of BICs with nearby radiative states.Merging multiple BICs can improve the robustness of BICs against fabrication imperfection by improving the Q factors of nearby states over a broad wavevector range.To date,the studies of merging BICs have been limited to fundamental BICs with topological charges±1.Here we show the unique advantages of higher-order BICs(those with higher-order topological charges)in constructing merging BICs.Merging multiple BICs with a higher-order BIC can further improve the Q factors compared with those involving only fundamental BICs.In addition,higher-order BICs offer great flexibility in realizing steerable off-T merging BICs.A higher-order BIC at F can split into a few off-T fundamental BICs by reducing the system symmetry.The split BICs can then be tuned to merge with another BIC,e.g.,an accidental BIC,at an off-Γpoint.When the in-plane mirror symmetry is further broken,merging BICs become steerable in the reciprocal space.Merging BICs provide a paradigm to achieve robust ultrahigh-Q resonances,which are important in enhancing nonlinear and quantum effects and improving the performance of optoelectronic devices.Meng Kang Li Mao Shunping Zhang Meng Xiao Hongxing Xu Che Ting Chan 2022Light(Science & Applications)2022,11,9:0
3Experimental realization of chiral Landau levels in two-dimensional Dirac cone systems with inhomogeneous effective mass显示文摘Chiral zeroth Landau levels are topologically protected bulk states.In particle physics and condensed matter physics,the chiral zeroth Landau level plays a significant role in breaking chiral symmetry and gives rise to the chiral anomaly.Previous experimental works on such chiral Landau levels are mainly based on three-dimensional Weyl degeneracies coupled with axial magnetic fields.Their realizations using two-dimensional Dirac point systems,being more promising for future applications,were never experimentally realized before.Here we propose an experimental scheme for realizing chiral Landau levels in a two-dimensional photonic system.By introducing an inhomogeneous effective mass through breaking local parity-inversion symmetries,a synthetic in-plane magnetic field is generated and coupled with the Dirac quasi-particles.Consequently,the zeroth-order chiral Landau levels can be induced,and the one-way propagation characteristics are experimentally observed.In addition,the robust transport of the chiral zeroth mode against defects in the system is also experimentally tested.Our system provides a new pathway for the realization of chiral Landau levels in two-dimensional Dirac cone systems,and may potentially be applied in device designs utilizing the chiral response and transport robustness.Hongwei Jia Mudi Wang Shaojie Ma Ruo-Yang Zhang Jing Hu Dongyang Wang Che Ting Chan 2023Light(Science & Applications)2023,12,8:0
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