4 papers
Nanomechanical topological insulators with an auxiliary orbital degree of freedom
Jingwen Ma, Xiang Xi, Yuan Li +1
Discrete degrees of freedom, such as spin and orbital, can provide intriguing strategies to manipulate electrons, photons, and phonons. With a spin degree of freedom, topological i…
Topological photonic integrated circuits based on valley kink states
Jingwen Ma, Xiang Xi, Xiankai Sun
Valley pseudospin, a new degree of freedom in photonic lattices, provides an intriguing way to manipulate photons and enhance the robustness of optical networks. Here we experiment…
Photonic integrated circuits in the continuum
Zejie Yu, Xiang Xi, Jingwen Ma +3
Waves that are perfectly confined in the continuous spectrum of radiating waves without interaction with them are known as bound states in the continuum (BICs). Despite recent disc…
Hybrid graphene/silicon integrated optical isolators with photonic spin-orbit interaction
Jingwen Ma, Xiang Xi, Zejie Yu +1
Optical isolators are an important building block in photonic computation and communication. In traditional optics, isolators are realized with magneto-optical garnets. However, it…