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Within the framework of the mean-field approximation, a coherently excited two-dimensional system of weakly repulsive bosons is predicted to show a giant loop scattering when the rotational symmetry is reduced. The considered process…

Mesoscale and Nanoscale Physics · Physics 2021-05-19 S. S. Gavrilov

Polariton lattice condensates provide a platform for on chip quantum emulations. Interactions in extended polariton lattices are currently limited by the intrinsic photonic disorder of microcavities. Here, we fabricate a strain compensated…

Polaritons of defined momentum and energy are excited resonantly on the lower polariton branch of a planar semiconductor microcavity in the strong coupling regime, and the spectrally and momentum resolved emission is analyzed. We observe…

Other Condensed Matter · Physics 2015-10-14 Joanna M Zajac , Wolfgang Langbein

Multiple scattering of polarised electromagnetic waves in diffusive media is investigated by means of radiative transfer theory. The method becomes exact in several situations of interest, such as a thick-slab experiment (slab thickness L…

Condensed Matter · Physics 2009-10-28 E. Amic , J. M. Luck , Th. M. Nieuwenhuizen

We consider a polariton microcavity resonantly driven by two external lasers which simultaneously pump both lower and upper polariton branches at normal incidence. In this setup, we study the occurrence of instabilities of the pump-only…

Quantum Gases · Physics 2018-06-29 G. Diaz-Camacho , C. Tejedor , F. M. Marchetti

Condensation of microcavity polaritons and the substantial influence of pair-breaking disorder and decoherence leading to a laser regime has been recently considered using two different models: a model for direct two band excitons in a…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 F. M. Marchetti , M. H. Szymanska , P. R. Eastham , B. D. Simons , P. B. Littlewood

Multiple light scattering is widely used to characterize dense colloidal systems as well as in deep tissue imaging; experiments are often interpreted via a theory of diffusion of the light intensity within a sample, neglecting the vector…

Soft Condensed Matter · Physics 2007-05-23 A. C. Maggs , V. Rossetto

A signature of the scattering between microcavity polaritons and longitudinal optical phonons has been observed in the electroluminescence spectrum of an intersubband device operating in the light-matter strong coupling regime. By…

Mesoscale and Nanoscale Physics · Physics 2012-12-20 A. Delteil , A. Vasanelli , P. Jouy , D. Barate , J. C. Moreno , R. Teissier , A. N. Baranov , C. Sirtori

We provide a theoretical framework describing slow-light polaritons interacting via atomic Rydberg states. We use a diagrammatic method to analytically derive the scattering properties of two polaritons. We identify parameter regimes where…

We theoretically designed and experimentally demonstrated a mechanism to protect a spatially segregated mixed light-matter state, known as intercavity exciton-polariton in strongly coupled optical cavities. This excitation, shared across…

We show theoretically that polariton pairs with a high degree of polarization entanglement can be produced through parametric scattering. We demonstrate that it can emerge in coincidence experiments, even at low excitation densities where…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 S. Portolan , O. Di Stefano , S. Savasta , V. Savona

New effects of polarization multistability and polarization hysteresis in a coherently driven polariton condensate in a semiconductor microcavity are predicted and theoretically analyzed. The multistability arises due to…

We report the experimental study of resonant Rayleigh scattering in GaAs-AlGaAs superlattices with ordered and intentionally disordered potential profiles (correlated and uncorrelated) in the growth direction z. We show that the intentional…

Mesoscale and Nanoscale Physics · Physics 2010-07-20 V. Bellani , M. Amado , E. Diez , C. Koerdt , M. Potemski , R. Hey

We study the photon emission from a quantum dot embedded in a microcavity. Incoherent pumping of its excitons and biexciton provokes the emission of leaky and cavity modes. By solving a master equation we obtain the correlation functions…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 J. I. Perea , C. Tejedor

We studied the intensity of resonant Raman scattering due to optical phonons in a planar II-VI-type semiconductor microcavity in the regime of strong coupling between light and matter. Two different sets of independent experiments were…

Strongly Correlated Electrons · Physics 2009-10-20 A. Bruchhausen , L. M. Leon Hilario , A. A. Aligia , A. M. Lobos , A. Fainstein , B. Jusserand , R. Andre

We present calculations of the intensity of polariton-mediated inelastic light scattering in semiconductor microcavities within a Green's function framework. In addition to reproducing the strong coupling of light and matter, this method…

Strongly Correlated Electrons · Physics 2015-05-14 L. M. Leon Hilario , A. A. Aligia , A. M. Lobos , A. Bruchhausen

We have experimentally observed an eddy current of exciton polaritons arising in a cylindrical GaAs/AlGaAs pillar microcavity under the nonresonant optical pumping. The polariton current manifests itself in a Mach-Zehnder interferometry…

Mesoscale and Nanoscale Physics · Physics 2018-05-30 V. A. Lukoshkin , V. K. Kalevich , M. M. Afanasiev , K. V. Kavokin , Z. Hatzopoulos , P. G. Savvidis , E. S. Sedov , A. V. Kavokin

Planar microcavities filled with active materials containing excitonic resonances host radiative exciton-polariton (polariton) modes with in-plane wave vectors within the light cone. They also host at least one mode guided in the cavity…

The ultrafast scattering dynamics of intersubband polaritons in dispersive cavities embedding GaAs/AlGaAs quantum wells are studied directly within their band structure using a non-collinear pump-probe geometry with phase-stable…

Multi-level exciton-polariton systems offer an attractive platform for studies of non-linear optical phenomena. However, studies of such consequential non-linear phenomena as polariton condensation and lasing in planar microcavities have so…