485 citations · 1.3k across the 14 of their papers we have counts for
14 papers
Topological Edge and Corner States in Biphenylene Photonic Crystal
Huyen Thanh Phan, Keiki Koizumi, Feng Liu +1
The biphenylene network (BPN) has a unique two-dimensional atomic structure, where hexagonal unit cells are arranged on a square lattice. Inspired by such a BPN structure, we desig…
Higher-order Topological Point State
Xiaoyin Li, Feng Liu
Higher-order topological insulators (HOTIs) have attracted increasing interest as a unique class of topological quantum materials. One distinct property of HOTIs is the crystalline…
Coherent control of a high-orbital hole in a semiconductor quantum dot
Jun-Yong Yan, Chen Chen, Xiao-Dong Zhang +14
Coherently driven semiconductor quantum dots are one of the most promising platforms for non-classical light sources and quantum logic gates which form the foundation of photonic q…
Semiconductor membranes for electrostatic exciton trapping in optically addressable quantum transport devices
Thomas Descamps, Feng Liu, Sebastian Kindel +9
Combining the capabilities of gate defined quantum transport devices in GaAs-based heterostructures and of optically addressed self-assembled quantum dots could open broad perspect…
Additive rule of real and reciprocal space topologies at disclinations
Qinghua He, Jinhua Sun, Hai-Yao Deng +2
Topological materials are renowned for their ability to harbor states localized at their peripheries, such as surfaces, edges, and corners. Accompanying these states, fractional ch…
Valley-dependent Corner States in Honeycomb Photonic Crystal without Inversion Symmetry
Huyen Thanh Phan, Feng Liu, Katsunori Wakabayashi
We study topological states of honeycomb photonic crystals in absence of inversion symmetry using plane wave expansion and finite element methods. The breaking of inversion symmetr…
Higher-order Quantum Spin Hall Effect of Light
Biye Xie, Guangxu Su, Hong-Fei Wang +7
Band topology and related spin (or pseudo-spin) physics of photons provide us with a new dimension for manipulating light, which is potentially useful for information communication…
Dimensional Crossover of Topological Edge States in Su-Schrieffer-Heeger Model
Daichi Obana, Feng Liu, Katsunori Wakabayashi
Su-Schrieffer-Heeger (SSH) model on two-dimensional square lattice exhibits a topological phase transition, which is related to the Zak phase determined by bulk band topology. The…
Photonic crystal nanocavity based on a topological corner state
Yasutomo Ota, Feng Liu, Ryota Katsumi +4
Topological phonics has emerged as a novel approach to engineer the flow of light and provides unprecedented means for developing diverse photonic elements, including robust optica…
Helical Topological Edge States in a Quadrupole Phase
Feng Liu, Hai-Yao Deng, Katsunori Wakabayashi
Topological electric quadrupole is a recently proposed concept that extends the theory of electric polarization of crystals to higher orders. Such a quadrupole phase supports topol…
Novel Topological Phase with Zero Berry Curvature
Feng Liu, Katsunori Wakabayashi
We present a two-dimensional (2D) lattice model that exhibits a nontrivial topological phase in the absence of the Berry curvature. Instead, the Berry connection provides the topol…
Optical excitation of surface plasma waves without grating structures
Hai-Yao Deng, Feng Liu, Katsunori Wakabayashi
Surface plasma waves (SPWs) are usually discussed in the context of a metal in contact with a dielectric. However, they can also exist between two metals. In this work we study the…
High-fidelity initialization of long-lived quantum dot hole spin qubits by reduced fine-structure splitting
Alistair J. Brash, Luis M. P. P. Martins, Feng Liu +4
We demonstrate an on-demand hole spin qubit initialization scheme meeting four key requirements of quantum information processing: fast initialization (1/e ~ 100 ps), high fidelity…
Phonon-assisted population inversion of a single quantum dot
J. H. Quilter, A. J. Brash, F. Liu +6
We demonstrate an approach to realize the population inversion of a single InGaAs/GaAs quantum dot, which is driven by a laser pulse tuned within the neutral exciton phonon sideban…