Exceptional points and non-Hermitian photonics at the nanoscale

A Li, H Wei, M Cotrufo, W Chen, S Mann, X Ni… - Nature …, 2023‏ - nature.com
Exceptional points (EPs) arising in non-Hermitian systems have led to a variety of intriguing
wave phenomena, and have been attracting increased interest in various physical platforms …

Non-Hermitian optics and photonics: from classical to quantum

C Wang, Z Fu, W Mao, J Qie, AD Stone… - Advances in Optics and …, 2023‏ - opg.optica.org
Non-Hermitian optics is a burgeoning field at the intersection of quantum physics,
electrodynamics, and nanophotonics. It provides a new perspective of the role of gain and …

Non-hermitian physics

Y Ashida, Z Gong, M Ueda - Advances in Physics, 2020‏ - Taylor & Francis
A review is given on the foundations and applications of non-Hermitian classical and
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …

Observation of the exceptional-point-enhanced Sagnac effect

YH Lai, YK Lu, MG Suh, Z Yuan, K Vahala - Nature, 2019‏ - nature.com
Exceptional points (EPs) are special spectral degeneracies of non-Hermitian Hamiltonians
that govern the dynamics of open systems. At an EP, two or more eigenvalues, and the …

Nonreciprocal photon blockade

R Huang, A Miranowicz, JQ Liao, F Nori, H **g - Physical review letters, 2018‏ - APS
We propose how to create and manipulate one-way nonclassical light via photon blockade
in rotating nonlinear devices. We refer to this effect as nonreciprocal photon blockade (PB) …

Nonreciprocal superradiant phase transitions and multicriticality in a cavity QED system

GL Zhu, CS Hu, H Wang, W Qin, XY Lü, F Nori - Physical Review Letters, 2024‏ - APS
We demonstrate the emergence of nonreciprocal superradiant phase transitions and novel
multicriticality in a cavity quantum electrodynamics system, where a two-level atom interacts …

Elastic higher-order topological insulator with topologically protected corner states

H Fan, B **a, L Tong, S Zheng, D Yu - Physical review letters, 2019‏ - APS
Topologically gapless edge states, characterized by topological invariants and Berry's
phases of bulk energy bands, provide amazing techniques to robustly control the …

Nonreciprocal entanglement in cavity-magnon optomechanics

J Chen, XG Fan, W **ong, D Wang, L Ye - Physical Review B, 2023‏ - APS
Cavity optomechanics, a promising platform to investigate macroscopic quantum effects, has
been widely used to study nonreciprocal entanglement with the Sagnac effect. Here, we …

Earth rotation measured by a chip-scale ring laser gyroscope

YH Lai, MG Suh, YK Lu, B Shen, QF Yang, H Wang… - Nature …, 2020‏ - nature.com
Optical gyroscopes are among the most accurate rotation measuring devices and are widely
used for navigation and accurate pointing. Since the advent of photonic integrated …