205 citations · 560 across the 13 of their papers we have counts for
14 papers
Non-Hermitian Skin Effect from Radiative Coupling in a Reciprocal Chiral Medium
Kin Hung Fung, Changhao Meng, Yixin Xiao +1
We show that long-range radiative coupling in a passive chiral medium produces an unusual non-Hermitian skin effect in a chain of dipoles. The skin-mode profile consists of a long-…
Unconventional topological edge states in one-dimensional gapless systems stemming from nonisolated hypersurface singularities
Hongwei Jia, Jing Hu, Ruo-Yang Zhang +7
Topologically protected edge states have been extensively studied in systems characterized by the topological invariants in band gaps (also called line gaps). In this study, we unv…
Nonlocal photonic quantum gates over 7.0 km
Xiao Liu, Xiao-Min Hu, Tian-Xiang Zhu +8
Quantum networks provide a prospective paradigm to connect separated quantum nodes, which relies on the distribution of long-distance entanglement and active feedforward control of…
Restoration of non-Hermitian bulk-boundary correspondence by counterbalancing skin effect
Yi-Xin Xiao, Zhao-Qing Zhang, C. T. Chan
The non-Hermitian skin effect (NHSE) undermines the conventional bulk-boundary correspondence (BBC) since it results in a distinct bulk spectrum in open-boundary systems compared t…
Topological classification for intersection singularities of exceptional surfaces in pseudo-Hermitian systems
Hongwei Jia, Ruo-Yang Zhang, Jing Hu +3
Exceptional points play a pivotal role in the topology of non-Hermitian systems, and significant advances have been made in classifying exceptional points and exploring the associa…
Topology in non-Hermitian Chern insulators with skin effect
Yi-Xin Xiao, C. T. Chan
The non-Hermitian skin effect can arise in materials that have asymmetric hoppings between atoms or resonating units, which makes the bulk eigenspectrum sensitive to boundary condi…
Exceptional points make an astroid in non-Hermitian Lieb lattice: evolution and topological protection
Yi-Xin Xiao, Kun Ding, Ruo-Yang Zhang +2
An astroid-shaped loop of exceptional points (EPs), comprising four cusps, is found to spawn from the triple degeneracy point in the Brillouin zone (BZ) of a Lieb lattice with near…
Hyperfine interaction and coherence time of praseodymium ions at the site 2 in yttrium orthosilicate
Yi-Xin Xiao, Zong-Quan Zhou, Yu Ma +4
Praseodymium (Pr) ions doped in the site 1 of yttrium orthosilicate (YSiO) has been widely employed as the photonic quantum memory due to their excellent optical coh…
Anisotropic exceptional points of arbitrary order
Yi-Xin Xiao, Zhao-Qing Zhang, Zhi Hong Hang +1
A pair of anisotropic exceptional points (EPs) of arbitrary order are found in a class of non-Hermitian random systems with asymmetric hoppings. Both eigenvalues and eigenvectors e…
Multiplexed storage and real-time manipulation based on a multiple-degree-of-freedom quantum memory
Tian-Shu Yang, Zong-Quan Zhou, Yi-Lin Hua +11
The faithful storage and coherent manipulation of quantum states with matter-systems enable the construction of large-scale quantum networks based on quantum repeater. To achieve u…
Probing the collective dynamics of nuclear spin bath in a rare-earth ion doped crystal
Zong-Quan Zhou, Yu Ma, Tao Tu +13
Probing collective spin dynamics is a current challenge in the field of magnetic resonance spectroscopy and has important applications in material analysis and quantum information…
A Raman-Heterodyne Study of the Hyperfine Interaction of the Optically-Excited State D of Eu:YSiO
Yu Ma, Zong-Quan Zhou, Chao Liu +13
The spin coherence time of Eu which substitutes the yttrium at site 1 in YSiO crystal has been extended to 6 hours in a recent work [\textit{Nature} \textbf{…
Coexistence of Localized and Extended States in Disordered Systems
Yi-Xin Xiao, Zhao-Qing Zhang, C. T. Chan
It is commonly believed that Anderson localized states and extended states do not coexist at the same energy. Here we propose a simple mechanism to achieve the coexistence of local…
Coexistence of quantized and non-quantized geometric phases in quasi-one-dimensional systems without inversion symmetry
Yi-Xin Xiao, Zhao-Qing Zhang, C. T. Chan
It is well known that inversion symmetry in one-dimensional (1D) systems leads to the quantization of the geometric Zak phase to values of either 0 or π. When the system has partic…