375 citations · 717 across the 19 of their papers we have counts for
19 papers
Realization of decoherence-induced averaged symmetry-protected topological phases on quantum processors
Ruizhe Shen, Xue-Jia Yu, Ching Hua Lee
Symmetry-protected topological (SPT) phases are conventionally formulated for pure states protected by exact symmetries. In open quantum systems, however, decoherence generates mix…
A fractional quantum Hall factory on quantum processors: constant-depth preparation of clustered non-Abelian states
Cheng Xu, Ching Hua Lee, Hong-Hao Tu +1
Non-Abelian anyons arise as exotic excitations in fractional quantum Hall (FQH) matter and have proved very elusive to realize in conventional platforms. In this work, we show that…
Non-Hermitian topology driven by an identity term: An exactly solvable paradigm
Lingfang Li, Yating Wei, Yang Ruan +6
An identity term in the Hamiltonian is conventionally regarded as spectrally inert-it shifts energies but does not alter eigenstate topology. We show that under non-Hermitian skin…
Exact Solutions Disentangle Higher-Order Topology in 2D Non-Hermitian Lattices
Lingfang Li, Yating Wei, Gangzhou Wu +4
We report the exact closed-form solutions for higher-order topological states as well as explicit energy-spectrum relationships in two-dimensional (2D) non-Hermitian multi-orbital…
Non-Hermitian Skin Effect Along Hyperbolic Geodesics
Ruizhe Shen, Wei Jie Chan, Ching Hua Lee
Recently, it has been revealed that a variety of novel phenomena emerge in hyperbolic spaces, while non-Hermitian physics has significantly enriched the landscape of condensed matt…
Floquet engineering of topological phase transitions in quantum spin Hall - system
Kok Wai Lee, Mateo Jalen Andrew Calderon, Xiang-Long Yu +3
Floquet engineering of topological phase transitions driven by a high-frequency time-periodic field is a promising approach to realizing new topological phases of matter distinct f…
Observation of higher-order time-dislocation topological modes
Jia-Hui Zhang, Feng Mei, Yi Li +4
Topological dislocation modes resulting from the interplay between spatial dislocations and momentum-space topology have recently attracted significant interest. Here, we theoretic…
Transverse Cooper-Pair Rectifier
Pei-Hao Fu, Yong Xu, Jun-Feng Liu +2
Non-reciprocal devices are key components in modern electronics covering broad applications ranging from transistors to logic circuits thanks to the output rectified signal in the…
Enhanced many-body quantum scars from the non-Hermitian Fock skin effect
Ruizhe Shen, Fang Qin, Jean-Yves Desaules +2
In contrast with extended Bloch waves, a single particle can become spatially localized due to the so-called skin effect originating from non-Hermitian pumping. Here we show that i…
Light-enhanced nonlinear Hall effect
Fang Qin, Rui Chen, Ching Hua Lee
It is well known that a nontrivial Chern number results in quantized Hall conductance. What is less known is that, generically, the Hall response can be dramatically different from…
Exceptional points in non-Hermitian Photonics: Applications and Recent Developments
Haiyu Meng, Yee Sin Ang, Ching Hua Lee
Exceptional points are complex branching singularities of non-Hermitian bands that have lately attracted considerable interest, particularly in non-Hermitian photonics. In this art…
Impedance responses and size-dependent resonances in topolectrical circuits via the method of images
Haydar Sahin, Zhuo Bin Siu, S. M. Rafi-Ul-Islam +3
Resonances in an electric circuit occur when capacitive and inductive components are present together. Such resonances appear in admittance measurements depending on the circuit's…
Field-Effect Josephson Diode via Asymmetric Spin-Momentum-Locking States
Pei-Hao Fu, Yong Xu, Shengyuan A. Yang +3
Recent breakthroughs in Josephson diodes dangle the possibility of extending conventional non-reciprocal electronics into the realm of superconductivity. While a strong magnetic fi…
High-fidelity realization of the AKLT state on a NISQ-era quantum processor
Tianqi Chen, Ruizhe Shen, Ching Hua Lee +1
The AKLT state is the ground state of an isotropic quantum Heisenberg spin- model. It exhibits an excitation gap and an exponentially decaying correlation function, with fractio…
Terahertz Polarization Conversion from Optical Dichroism in a Topological Dirac Semimetal
Haiyu Meng, Lingling Wang, Ching Hua Lee +1
Topological Dirac semimetals (TDSM), such as CdAs and NaBi, exhibits strong optical dichroism with contrasting dielectric permittivity along different crystal axes. How…
System size dependent topological zero modes in coupled topolectrical chains
S M Rafi-Ul-Islam, Zhuo Bin Siu, Haydar Sahin +2
In this paper, we demonstrate the emergence and disappearance of topological zero modes (TZMs) in a coupled topolectrical (TE) circuit lattice. Specifically, we consider non-Hermit…
Non-Hermitian skin clusters from strong interactions
Ruizhe Shen, Ching Hua Lee
Strong, non-perturbative interactions often lead to new exciting physics, as epitomized by emergent anyons from the Fractional Quantum Hall effect. Within the actively investigated…
Observation of hybrid higher-order skin-topological effect in non-Hermitian topolectrical circuits
Deyuan Zou, Tian Chen, Wenjing He +4
Robust boundary states epitomize how deep physics can give rise to concrete experimental signatures with technological promise. Of late, much attention has focused on two distinct…
Universal model for electron thermal-field emission from two-dimensional semimetals
L. K. Ang, Yee Sin Ang, Ching Hua Lee
We present the theory of out-of-plane (or vertical) electron thermal-field emission from 2D semimetals. We show that the current-voltage-temperature characteristic is well-captured…