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Exciton polaritons are hybrid particles of excitons (bound electron-hole pairs) and cavity photons, which are renowned for displaying Bose Einstein condensation and other coherent phenomena at elevated temperatures. However, their formation…

Mesoscale and Nanoscale Physics · Physics 2024-08-29 Kenneth Choo , Olivier Bleu , Jesper Levinsen , Meera M. Parish

We examine the Bose-Einstein condensation of exciton-polaritons in a semiconductor microcavity via an electrical current. We propose that by embedding a quantum dot p-i-n junction inside the cavity, the tunneling current through the device…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Yueh-Nan Chen , Neill Lambert , Franco Nori

Polaritons in semiconductor microcavities can experience a Bose-Einstein condensation experimentally detectable in the spectrum of the emitted light. Scattering with noncondensed particles as well as self-interaction in the condensate…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 D. Porras , C. Tejedor

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 present a theoretical model that allows us to describe the polariton dynamics in a semiconductor microcavity at large densities, for the case of non-resonant excitation. Exciton-polariton scattering from a thermalized exciton reservoir…

Condensed Matter · Physics 2009-11-07 D. Porras , C. Ciuti , J. J. Baumberg , C. Tejedor

When the coupling between light and matter becomes comparable to the energy gap between different excited states they hybridize, leading to the appearance of a rich and complex phenomenology which attracted remarkable interest in recent…

We explore the generation of anti-Stokes fluorescence from strongly coupled organic dye microcavities following resonant ground-state excitation. We observe polariton emission along the lower polariton branch, with our results indicating…

Mesoscale and Nanoscale Physics · Physics 2018-10-25 Kyriacos Georgiou , Rahul Jayaprakash , Alexis Askitopoulos , David M. Coles , Pavlos G. Lagoudakis , David G. Lidzey

Owing to their integer spin, exciton-polaritons in microcavities can be used for observation of non-equilibrium Bose-Einstein condensation in solid state. However, spin-related phenomena of such condensates are difficult to explore due to…

We present a systematic investigation of two-photon excitation processes in a GaAs-based microcavity in the strong-coupling regime. We observe second harmonic generation resonant to the upper and lower polariton level, which exhibits a…

Mesoscale and Nanoscale Physics · Physics 2014-08-06 Johannes Schmutzler , Marc Aßmann , Thomas Czerniuk , Martin Kamp , Christian Schneider , Sven Höfling , Manfred Bayer

We show that when following a simple cavity design metric, a quantum well exciton-microcavity photon coupling constant can be larger than the exciton binding energy in GaAs based optical microcavities. Such a very strong coupling…

Quantum Physics · Physics 2018-06-25 H. Zhang , N. Y. Kim , Y. Yamamoto , N. Na

We present a quantum Monte Carlo study of the quantum correlations in the parametric luminescence from semiconductor microcavities in the strong exciton-photon coupling regime. As already demonstrated in recent experiments, a ring-shaped…

Other Condensed Matter · Physics 2015-05-13 Arnaud Verger , Iacopo Carusotto , Cristiano Ciuti

We demonstrate a novel kind of polariton four wave mixing oscillation. Two pump polaritons scatter towards final states that emit two beams of equal intensity, separated both spatially and in polarization with respect to the pumps. The…

Other Condensed Matter · Physics 2017-02-20 Marco Romanelli , Charles Leyder , Jean-Philippe Karr , Elisabeth Giacobino , Alberto Bramati

Exciton-polaritons are bosonic-like elementary excitations in semiconductors, which have been recently shown to display large occupancy of topologically protected polariton bound states in the continuum in suitably engineered photonic…

Other Condensed Matter · Physics 2023-12-13 Davide Nigro , Dario Gerace

Exciton polaritons in two-dimensional semiconductors inside microcavities are powerful platforms to explore hybrid light-matter quantum systems. Here, we study a macroscopic coherent population of the lowest energy state of…

Mesoscale and Nanoscale Physics · Physics 2021-10-26 Aleksi Julku , Miguel. A. Bastarrachea-Magnani , Arturo Camacho-Guardian , Georg M. Bruun

We report on the realization of polariton quantum boxes in a semiconductor microcavity under strong coupling regime. The quantum boxes consist of mesas that confine the cavity photon, etched on top of the spacer of a microcavity. For mesas…

We report the observation of polaritonic bistability in semiconductor microcavities in the strong coupling regime. The origin of bistability is the polariton-polariton interaction, which gives rise to a Kerr-like nonlinearity. The…

Strongly Correlated Electrons · Physics 2017-02-20 Augustin Baas , Jean-Philippe Karr , Elisabeth Giacobino

Solid-state semiconductor lasers underpin technologies from telecommunications and data storage to sensing, medical diagnostics, and emerging quantum communication. Polaritons-hybrid exciton-photon states have further extended this reach,…

The quantum correlations between the beams generated by polariton pair scattering in a semiconductor microcavity above the parametric oscillation threshold are computed analytically. The influence of various parameters like the…

Strongly Correlated Electrons · Physics 2017-02-20 Jean-Philippe Karr , Augustin Baas , Elisabeth Giacobino

Microcavity polaritons are light-matter quasiparticles that arise from the strong coupling between excitons and photons confined in a semiconductor microcavity. They typically operate at visible or near visible wavelengths. They combine the…

Mesoscale and Nanoscale Physics · Physics 2020-11-06 Dmitry D. Solnyshkov , Guillaume Malpuech , Philippe St-Jean , Sylvain Ravets , Jacqueline Bloch , Alberto Amo

We observe condensation of exciton polaritons in quantum states composed of concentric rings when exciting cylindrical pillar GaAs/AlGaAs microcavities non-resonantly by a focused laser beam normally incident at the center of the pillar.…