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Valley-Hall photonic topological insulators with dual-band kink states
Qiaolu Chen, Li Zhang, Mengjia He +6
Extensive researches have revealed that valley, a binary degree of freedom (DOF), can be an excellent candidate of information carrier. Recently, valley DOF has been introduced int…
Type-I hyperbolic metasurfaces for highly-squeezed designer polaritons with negative group velocity
Yihao Yang, Pengfei Qin, Xiao Lin +4
Hyperbolic polaritons in van der Waals materials and metamaterial heterostructures provide unprecedented control over light-matter interaction at the extreme nanoscale. Here, we pr…
Experimental observation of superscattering
Chao Qian, Xiao Lin, Yi Yang +6
Superscattering, induced by degenerate resonances, breaks the fundamental single-channel limit of scattering cross section of subwavelength structures; in principle, an arbitrarily…
Broadband negative refraction of highly squeezed hyperbolic graphene plasmons
Jing Jiang, Xiao Lin, Baile Zhang
Negative refraction of highly squeezed polaritons is a fundamental building block for nanophotonics, since it can enable many unique applications, such as deep-subwavelength imagin…
Superlight inverse Doppler effect
Xihang Shi, Xiao Lin, Ido Kaminer +5
There is a century-old tenet [1, 2] that the inverse Doppler frequency shift of light [3-13] is impossible in homogeneous systems with a positive refractive index. Here we break th…
Controlling Cherenkov angles with resonance transition radiation
Xiao Lin, Sajan Easo, Yichen Shen +5
Cherenkov radiation provides a valuable way to identify high energy particles in a wide momentum range, through the relation between the particle velocity and the Cherenkov angle.…
Group-velocity-controlled and gate-tunable directional excitation of polaritons in graphene-boron nitride heterostructures
Yuyu Jiang, Xiao Lin, Tony Low +2
A fundamental building block in nano-photonics is the ability to directionally excite highly squeezed optical mode dynamically, particularly with an electrical bias. Such capabilit…