41 citations · 152 across the 10 of their papers we have counts for
11 papers
Antichiral hinge states in a higher-order photonic nodal ring semimetal
Yuchen Peng, Deep Mondal, Yuting Yang +17
Antichiral states propagate in the same direction on opposite boundaries, defying the conventional constraint that boundary modes must cancel net chirality. Previously found antich…
Hybrid skin-topological effect induced by eight-site cells and arbitrary adjustment of the localization of topological edge states
Jianzhi Chen, Aoqian Shi, Yuchen Peng +2
The hybrid skin-topological effect (HSTE) in non-Hermitian systems exhibits both the skin effect and topological protection, offering a novel mechanism for the localization of topo…
Aperiodic-quasiperiodic-periodic properties and topological transitions in twisted nested Moiré patterns
Peng Peng, Yuchen Peng, Aoqian Shi +3
The Moiré patterns generated by altering the structural parameters in a two or more layers of periodic materials, including single-layer structure, interlayer stacking, and twistin…
Pseudospin-Induced Asymmetric Field in Non-Hermitian Photonic Crystals with Multiple Topological Transitions
Yuchen Peng, Aoqian Shi, Peng Peng +1
We report the discovery of multiple topological phase transitions induced by the photonic quantum spin Hall effect (PQSHE) in a non-Hermitian photonic crystal (PhC). When increasin…
Observation of Topological Corner State Arrays in Photonic Quasicrystals
Aoqian Shi, Yiwei Peng, Jiapei Jiang +8
Recently, the studies of topological corner states (TCSs) are extended from crystals to quasicrystals, which are referred to as higher-order topological quasicrystalline insulators…
Simple theoretical model for parity-time-symmetric metasurfaces
Jianlan Xie, Shaohua Dong, Bei Yan +4
Many new possibilities to observe and use novel physical effects are discovered at so called exceptional points (EPs). This is done by using parity-time (PT) -symmetric non-Hermiti…
Multifrequency and multimode topological waveguides in a Stampfli-triangle photonic crystal with large valley Chern numbers
Bei Yan, Yiwei Peng, Jianlan Xie +9
The multifrequency quantum valley Hall effect (QVHE) with a large valley Chern number has been realized to significantly improve the transmission capacity of topological waveguides…
High-Order Nonreciprocal Add-Drop Filter
Hang Li, Rui Ge, Yuchen Peng +4
Topological photonics have led to the robust optical behavior of the device, which has solved the problem of the influence of manufacturing defects and perturbations on the device…
Frequency tunable topological edge states of two-dimensional honeycomb lattice photonic crystals
Yuchen Peng, Bei Yan, Jianlan Xie +5
In this paper, the photonic quantum spin Hall effect (PQSHE) is realized in dielectric two-dimensional (2D) honeycomb lattice photonic crystal (PC) by stretching and shrinking the…
High-fidelity quantum state preparation using neighboring optimal control
Yuchen Peng, Frank Gaitan
We present an approach to single-shot high-fidelity preparation of an -qubit state based on neighboring optimal control theory. This represents a new application of the neighbor…
Improving quantum gate performance through neighboring optimal control
Yuchen Peng, Frank Gaitan
Successful implementation of a fault-tolerant quantum computation on a system of qubits places severe demands on the hardware used to control the many-qubit state. It is known that…