Exceptional entanglement phenomena: Non-Hermiticity meeting nonclassicality

PR Han, F Wu, XJ Huang, HZ Wu, CL Zou, W Yi… - Physical Review Letters, 2023 - APS
Non-Hermitian (NH) extension of quantum-mechanical Hamiltonians represents one of the
most significant advancements in physics. During the past two decades, numerous …

Toward Heisenberg scaling in non-Hermitian metrology at the quantum regime

X Yu, X Zhao, L Li, XM Hu, X Duan, H Yuan… - Science …, 2024 - science.org
Non-Hermitian quantum metrology, an emerging field at the intersection of quantum
estimation and non-Hermitian physics, holds promise for revolutionizing precision …

Unravelling the edge spectra of non-Hermitian Chern insulators

J Bartlett, E Zhao - Physical Review B, 2023 - APS
Non-Hermitian Chern insulators differ from their Hermitian cousins in one key aspect: their
edge spectra are incredibly rich and confounding. For example, even in the simple case …

Quantum parameter estimation of non-Hermitian systems with optimal measurements

X Yu, C Zhang - Physical Review A, 2023 - APS
Quantum parameter estimation with Hermitian systems has been applied in various fields,
but there are relatively few results concerning non-Hermitian systems. Here, we study the …

Enhanced sensing of optomechanically induced nonlinearity by linewidth suppression and optical bistability in cavity-waveguide systems

CW Liu, Y Liu, L Du, WJ Su, H Wu, Y Li - Optics Express, 2023 - opg.optica.org
We study the enhanced sensing of optomechanically induced nonlinearity (OMIN) in a cavity-
waveguide coupled system. The Hamiltonian of the system is anti-PT symmetric, with the two …

Non-Hermitian Quantum Rényi Entropy Dynamics in Anyonic-PT Symmetric Systems

Z Liu, C Zheng - Symmetry, 2024 - mdpi.com
We reveal the continuous change of information dynamics patterns in anyonic-PT symmetric
systems that originates from the continuity of anyonic-PT symmetry. We find there are three …

Non-Hermitian Entropy Dynamics in Anyonic-PT Symmetric Systems

Z Liu, C Zheng - arXiv preprint arXiv:2312.10350, 2023 - arxiv.org
Non-Hermitian (NH) physics has a close relationship with open and dissipative systems,
attracting attentions increasingly. The conventional entropy based on the normalized …

Bulk-Edge Correspondence and Topological Characterization of Non-Hermitian Bloch Hamiltonians

J Bartlett - 2022 - search.proquest.com
Abstract Non-Hermitian (NH) Hamiltonians have long been used to describe a wide range of
open or nonequilibrium quantum systems. The experimental realization of parity-time …

Enhanced Sensing via Anti-PT Symmetry

GS Agarwal - lasphys.com
In recent times a large body of literature has been devoted to the study of non-Hermitian
systems. The central idea behind such studies has been the Parity-Time [PT] symmetry and …