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Microcavity polaritons are bosonic light-matter particles that can emit coherent radiation without electronic population inversion via bosonic scattering. This phenomenon, known as polariton lasing, strongly depends on the polaritons'…

Optics · Physics 2021-02-09 U. Czopak , M. Prilmüller , C. Schneider , S. Höfling , G. Weihs

Exciton-polaritons can be created in semiconductor microcavities. These quasiparticles act as weakly interacting bosons with very light mass, of the order of $10^{-4}$ times the vacuum electron mass. Many experiments have shown effects…

Polariton thermalization is a key process in achieving light-matter Bose--Einstein condensation, spanning from solid-state semiconductor microcavities at cryogenic temperatures to surface plasmon nanocavities with molecules at room…

Polaritons are quasi-particles originating from the coupling of light with matter that demonstrated quantum phenomena at the many-particle mesoscopic level, such as BEC and superfluidity. A highly sought and long-time missing feature of…

The first realization of a polariton condensate was recently achieved in a CdTe microcavity [Kasprzak et al., Nature 443, 409 (2006)]. We compare the experimental phase boundaries, for various detunings and cryostat temperatures, with those…

Mesoscale and Nanoscale Physics · Physics 2008-06-23 F. M. Marchetti , M. H. Szymanska , J. Keeling , J. Kasprzak , R. Andre , P. B. Littlewood , Le Si Dang

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…

We show that polaritons in an array of interacting micro-cavities with strong atom-photon coupling can form a two-component Bose-Hubbard model. Both polariton species are thereby protected against spontaneous emission as their atomic part…

Quantum Physics · Physics 2015-05-13 Michael J. Hartmann , Fernando G. S. L. Brandao , Martin B. Plenio

A methodology for forming a qubit state is essential for quantum applications of room temperature polaritons. While polarization degree of freedom is expected as a possible means for this purpose, the coupling of linearly polarized…

Materials Science · Physics 2023-05-12 Yuta Moriyama , Takaya Inukai , Tsukasa Hirao , Yusuke Ueda , Shun Takahashi , Kenichi Yamashita

Engineering strong interactions between optical photons is a great challenge for quantum science. Envisioned applications range from the realization of photonic gates for quantum information processing to synthesis of photonic quantum…

Mesoscale and Nanoscale Physics · Physics 2019-11-26 Patrick Knüppel , Sylvain Ravets , Martin Kroner , Stefan Fält , Werner Wegscheider , Atac Imamoglu

Recent experiments in exciton-polariton systems have provided high-precision measurements of the value of the polariton-polariton interaction constant, which is a key parameter that governs the nonlinear dynamics of polariton condensates…

Mesoscale and Nanoscale Physics · Physics 2021-12-15 Guangyao Li , Meera M. Parish , Jesper Levinsen

Polaritonic states arise when a bright optical transition of a molecular ensemble is resonantly matched to an optical cavity mode frequency. Here, we lay the groundwork to study the behavior of polaritons in clean, isolated systems by…

Chemical Physics · Physics 2023-10-20 Adam D. Wright , Jane C. Nelson , Marissa L. Weichman

We develop a microscopic description of an electron-doped two-dimensional semiconductor embedded in a microcavity. Specifically, we investigate the interactions between exciton-polaritons and electrons for the case where the interactions…

Mesoscale and Nanoscale Physics · Physics 2021-05-19 Guangyao Li , Olivier Bleu , Jesper Levinsen , Meera M. Parish

Exciton-polaritons - coherently hybridized states of excitons and photons - are instrumental for solid-state nonlinear optics and quantum simulations. To enable engineered polariton energy landscapes and interactions, local control over the…

We present a microcavity structure with a shifted photonic stop-band to enable efficient non-resonant injection of a polariton condensate with spectrally broad femtosecond pulses. The concept is demonstrated theoretically and confirmed…

Mesoscale and Nanoscale Physics · Physics 2016-05-17 C. Poellmann , U. Leierseder , E. Galopin , A. Lemaître , A. Amo , J. Bloch , R. Huber , J. -M. Ménard

We theoretically propose a scheme to realize a $n$-cavity-magnon polariton blockade in a cavity-magnon system by utilizing the Kerr nonlinearity. Cavity-magnon polaritons are hybrid quasiparticles formed by the strong coupling between…

Quantum Physics · Physics 2026-03-18 Zhe-Qi Yang , Xiao-Yu Bi , Zhi-Rong Zhong

The relaxation kinetics of cavity polaritons by scattering with thermal acoustic phonons is studied within the rate equation approximation. Numerical results show that a suppression of the bottleneck of lower polariton states occurs at high…

Condensed Matter · Physics 2009-11-07 T. D. Doan , D. B. Tran Thoai

I analyze a scheme that is capable of producing large Kerr nonlinearities on cavity-atom polaritons in a cavity QED system consisting of multiple three-level atoms confined in a cavity mode. A weak control laser coupled to the atoms from…

Optics · Physics 2015-05-14 Yifu Zhu

Optically generated exciton-polaritons in cylindric semiconductor pillar microcavity with embedded GaAs/AlGaAs quantum wells demonstrate a clear polariton lasing regime. When exciting in the center of the pillar we detect a ring-shaped…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 V. K. Kalevich , M. M. Afanasiev , V. A. Lukoshkin , K. V. Kavokin , S. I. Tsintzos , P. G. Savvidis , A. V. Kavokin

In the field of spin-controlled semiconductor lasers, massive effort has been focused upon materials with long spin relaxation times (~ns). In contrast, we demonstrate room-temperature spin-polarized ultrafast pulsed lasing in InGaAs…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Feng-kuo Hsu , Yi-Shan Lee , Sheng-Di Lin , Chih-Wei Lai

Cavity exciton-polaritons (polaritons) are bosonic quasi-particles offering a unique solid-state system to investigate interacting condensates. Up to now, disorder induced localization and short lifetimes have prevented the establishment of…

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