Microcavity polaritons are two-dimensional bosonic fluids with strong nonlinearities, composed of coupled photonic and electronic excitations. In their condensed form, they display quantum hydrodynamic features similar to atomic Bose-Einstein condensates, such as long-range coherence, superfluidity and quantized vorticity. Here we report the unique phenomenology that is observed when a pulse of...

Exciton-polaritons are quasiparticles consisting of a linear superposition of photonic and excitonic states, offering potential for nonlinear optical devices. The excitonic component of the polariton provides a finite Coulomb scattering cross section, such that the different types of exciton found in organic materials (Frenkel) and inorganic materials (Wannier-Mott) produce polaritons with diff...

Non-Hermitian topological corner modes can be formed in exciton-polariton lattices under nonresonant pumping. Signals propagating the bulk of system travel around defects, which is not possible one-dimensional or two-dimensional with Hermitian edge states. In presence nonlinear interactions, remains topological, as evidenced by winding complex fluctuation spectrum. Finally, all polariton states...

Two-dimensional transition metal dichalcogenides exhibit strong optical transitions with significant potential for optoelectronic devices. In particular they are suited for cavity quantum electrodynamics in which strong coupling leads to polariton formation as a root to realisation of inversionless lasing, polariton condensation and superfluidity. Demonstrations of such strongly correlated phen...

Monolayer transition metal dichalcogenides (TMD) with confined 2D Wannier-Mott excitons are intriguing for the fundamental study of strong light-matter interactions and the exploration of exciton polaritons at high temperatures. However, the research of 2D exciton polaritons has been hindered because the polaritons in these atomically thin semiconductors discovered so far can hardly support str...

Manipulating the nature of photons emission is one of the basic tasks in quantum optics and photonics. The ever growing list of quantum applications requires a robust means of controlling the strongly coupled coherent interaction of photons and matter. Here, we investigate three-photon transmission spectra in a strongly coupled cavity polariton system and show that the correlation functions and...

Realising strong photon-photon interactions in a solid-state setting is major goal with far reaching potential for optoelectronic applications. Using Landau's quasiparticle framework combined microscopic many-body theory, we explore the between exciton-polaritons and trions two-dimensional semiconductor injected an electron gas inside microcavity. We show that particle-hole excitations mediate ...

The authors investigate here the spin polarization of localized exciton-polariton condensates in CdTe-based microcavities doped with magnetic ions. They demonstrate that an effective field originating from photonic potential landscape leads to formation elliptically polarized condensate. degree condensate depends on excitation power and laser. Based behavior presence ions, they estimate polarit...