Direct measurement of a non-Hermitian topological invariant in a hybrid light-matter system
Topology is central to understanding and engineering materials that display robust physical
phenomena immune to imperfections. Different topological phases of matter are …
phenomena immune to imperfections. Different topological phases of matter are …
Electrically tunable Berry curvature and strong light-matter coupling in liquid crystal microcavities with 2D perovskite
The field of spinoptronics is underpinned by good control over photonic spin-orbit coupling
in devices that have strong optical nonlinearities. Such devices might hold the key to a new …
in devices that have strong optical nonlinearities. Such devices might hold the key to a new …
Natural exceptional points in the excitation spectrum of a light–matter system
In this work, we observe natural exceptional points in the excitation spectrum of an exciton–
polariton system by optically tuning the light–matter interactions. The observed exceptional …
polariton system by optically tuning the light–matter interactions. The observed exceptional …
Topological phase transition in an all-optical exciton-polariton lattice
Topological insulators are a class of electronic materials exhibiting robust edge states
immune to perturbations and disorder. This concept has been successfully adapted in …
immune to perturbations and disorder. This concept has been successfully adapted in …
High-resolution coherent probe spectroscopy of a polariton quantum fluid
F Claude, MJ Jacquet, R Usciati, I Carusotto… - Physical Review Letters, 2022 - APS
Characterizing elementary excitations in quantum fluids is essential to study their collective
effects. We present an original angle-resolved coherent probe spectroscopy technique to …
effects. We present an original angle-resolved coherent probe spectroscopy technique to …
Observation of Zitterbewegung in photonic microcavities
We present and experimentally study the effects of the photonic spin–orbit coupling on the
real space propagation of polariton wavepackets in planar semiconductor microcavities and …
real space propagation of polariton wavepackets in planar semiconductor microcavities and …
Electrically Controlling Vortices in a Neutral Exciton-Polariton Condensate at Room Temperature
X Zhai, X Ma, Y Gao, C Xing, M Gao, H Dai, X Wang… - Physical Review Letters, 2023 - APS
Manipulating bosonic condensates with electric fields is very challenging as the electric
fields do not directly interact with the neutral particles of the condensate. Here we …
fields do not directly interact with the neutral particles of the condensate. Here we …
Bogoliubov excitations of a polariton condensate in dynamical equilibrium with an incoherent reservoir
The classic Bogoliubov theory of weakly interacting Bose gases rests upon the assumption
that nearly all the bosons condense into the lowest quantum state at sufficiently low …
that nearly all the bosons condense into the lowest quantum state at sufficiently low …
Occupancy-driven Zeeman suppression and inversion in trapped polariton condensates
We study the magnetophotoluminescence of an optically trapped exciton-polariton
condensate in a planar semiconductor microcavity with multiple In 0.08 Ga 0.92 As quantum …
condensate in a planar semiconductor microcavity with multiple In 0.08 Ga 0.92 As quantum …
Quantum mechanical-like approach with non-Hermitian effective Hamiltonians in spin-orbit coupled optical cavities
P Oliwa, W Bardyszewski, J Szczytko - Physical Review Research, 2024 - APS
We present a comprehensive analytical model of resonant states in birefringent
microcavities with permeable mirrors. We derive an effective, non-Hermitian photonic …
microcavities with permeable mirrors. We derive an effective, non-Hermitian photonic …