211 citations · 255 across the 6 of their papers we have counts for
15 papers · 1 filter
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…
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…
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…