850 citations · 2.7k across the 32 of their papers we have counts for
32 papers
Chiral Entangled-State Generation through Dissipative Quantum Dynamics
Huixia Gao, Konghao Sun, Yiwen Han +6
Dissipation, though often detrimental to quantum entanglement, can be manipulated for the preparation of entangled states, wherein ingeniously designed quantum jump processes drive…
Decoherence Resilience of the Non-Hermitian Skin Effect
Kunkun Wang, Lei Xiao, Stefano Longhi +1
Decoherence and dissipation, arising from unavoidable interactions with the environment, can exert a dual influence on transport in physical systems, suppressing coherent propagati…
Experimental device-independent certification of indefinite causal order
Dengke Qu, Quan Lin, Lei Xiao +2
Understanding the physical world fundamentally relies on the assumption that events are temporally ordered, with past events serving as causes for future ones. However, quantum mec…
Observation of Criticality-Enhanced Quantum Sensing in Nonunitary Quantum Walks
Lei Xiao, Saubhik Sarkar, Kunkun Wang +2
Quantum physics enables parameter estimation with precisions beyond the capability of classical sensors. Quantum criticality is a key resource for this quantum-enhanced sensing, bu…
Photonic chiral state transfer near the Liouvillian exceptional point
Huixia Gao, Konghao Sun, Dengke Qu +4
As branch-point singularities of non-Hermitian matrices, the exceptional points (EPs) exhibit unique spectral topology and criticality, with intriguing dynamic consequences in non-…
Observation of Braid-Protected Unpaired Exceptional Points
Kunkun Wang, J. Lukas K. König, Kang Yang +4
Spectral degeneracies (dubbed nodal points in momentum space) play fundamental roles in understanding exotic properties of light and matter. In lattice systems, unpaired band-struc…
Non-Hermitian sensing in the absence of exceptional points
Lei Xiao, Yaoming Chu, Quan Lin +4
Open systems possess unique potentials in high-precision sensing, yet the majority of previous studies rely on the spectral singularities known as exceptional points. Here we theor…
Experimental observation of the Yang-Lee quantum criticality in open systems
Huixia Gao, Kunkun Wang, Lei Xiao +6
The Yang-Lee edge singularity was originally studied from the standpoint of mathematical foundations of phase transitions, and its physical demonstration has been of active interes…
Self acceleration from spectral geometry in dissipative quantum-walk dynamics
Peng Xue, Quan Lin, Kunkun Wang +3
Dynamic behaviors of a physical system often originate from its spectral properties. In open systems, where the effective non-Hermitian description enables a wealth of spectral str…
Observation of non-Hermitian edge burst in quantum dynamics
Lei Xiao, Wen-Tan Xue, Fei Song +4
The non-Hermitian skin effect, by which the eigenstates of Hamiltonian are predominantly localized at the boundary, has revealed a strong sensitivity of non-Hermitian systems to th…
Experimental Simulation of Symmetry-Protected Higher-Order Exceptional Points with Single Photons
Kunkun Wang, Lei Xiao, Haiqing Lin +3
Exceptional points (EPs) of non-Hermitian (NH) systems have recently attracted increasing attention due to their rich phenomenology and intriguing applications. Compared to the pre…
Synchronous observation of Bell nonlocality and state-dependent Kochen-Specker contextuality
Lei Xiao, Gabriel Ruffolo, André Mazzari +4
Bell nonlocality and Kochen-Specker contextuality are two remarkable nonclassical features of quantum theory, related to strong correlations between outcomes of measurements perfor…
Simulating non-Hermitian quasicrystals with single-photon quantum walks
Quan Lin, Tianyu Li, Lei Xiao +3
Non-Hermiticity significantly enriches the properties of topological models, leading to exotic features such as the non-Hermitian skin effects and non-Bloch bulk-boundary correspon…
Observation of non-Hermitian topological Anderson insulator in quantum dynamics
Quan Lin, Tianyu Li, Lei Xiao +3
Disorder and non-Hermiticity dramatically impact the topological and localization properties of a quantum system, giving rise to intriguing quantum states of matter. The rich inter…
Detecting non-Bloch topological invariants in quantum dynamics
Kunkun Wang, Tianyu Li, Lei Xiao +3
Non-Bloch topological invariants preserve the bulk-boundary correspondence in non-Hermitian topological systems, and are a key concept in the contemporary study of non-Hermitian to…
Quantum information dynamics in a high-dimensional parity-time-symmetric system
Zhihao Bian, Lei Xiao, Kunkun Wang +5
Non-Hermitian systems with parity-time () symmetry give rise to exceptional points (EPs) with exceptional properties that arise due to the coalescence of eigenvectors…
Simulating Exceptional Non-Hermitian Metals with Single-Photon Interferometry
Kunkun Wang, Lei Xiao, Jan Carl Budich +2
We experimentally simulate in a photonic setting non-Hermitian (NH) metals characterized by the topological properties of their nodal band structures. Implementing nonunitary time…
Observation of non-Bloch parity-time symmetry and exceptional points
Lei Xiao, Tianshu Deng, Kunkun Wang +3
Parity-time (PT)-symmetric Hamiltonians have widespread significance in non-Hermitian physics. A PT-symmetric Hamiltonian can exhibit distinct phases with either real or complex ei…
Non-Hermitian Kibble-Zurek mechanism with tunable complexity in single-photon interferometry
Peng Xue, Lei Xiao, Dengke Qu +7
Non-Hermitian descriptions of quantum matter have seen impressive progress recently, with major advances in understanding central aspects such as their topological properties or th…
Experimental realization of a quantum image classifier via tensor-network-based machine learning
Kunkun Wang, Lei Xiao, Wei Yi +2
Quantum machine learning aspires to overcome intractability that currently limits its applicability to practical problems. However, quantum machine learning itself is limited by lo…
Experimental entropic test of state-independent contextuality via single photons
Dengke Qu, Pawel Kurzynski, Dagomir Kaszlikowski +5
Recently, an inequality satisfied by non-contextual hidden-variable models and violated by quantum mechanics for all states of a four-level system has been derived based on informa…
Direct Experimental Test of Forward and Reverse Uncertainty Relations
Lei Xiao, Bowen Fan, Kunkun Wang +2
The canonical Robertson-Schrödinger uncertainty relation provides a loose bound for the product of variances of two non-commuting observables. Recently, several tight forward and r…
Experimental orthogonalization of highly overlapping quantum states with single photons
Gaoyan Zhu, Orsolya Kalman, Kunkun Wang +6
We experimentally realize a nonlinear quantum protocol on single-photon qubits with linear optical elements and appropriate measurements. The quantum nonlinearity is induced by pos…
Observation of non-Hermitian bulk-boundary correspondence in quantum dynamics
Lei Xiao, Tianshu Deng, Kunkun Wang +4
Bulk-boundary correspondence, a central principle in topological matter relating bulk topological invariants to edge states, breaks down in a generic class of non-Hermitian systems…