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We take advantage of the polariton bistability in semiconductor microcavities to estimate the interaction strength between lower exciton-polariton and dark exciton states. We combine the quasiresonant excitation of polaritons and the…

Mesoscale and Nanoscale Physics · Physics 2023-05-23 Elena Rozas , Evgeny Sedov , Yannik Brune , Sven Höfling , Alexey Kavokin , Marc Aßmann

Polaritons are unique hybrid light-matter states that offer an alternative way to manipulate chemical processes and change material properties. In this work we theoretically demonstrate that singlet fission dynamics can be accelerated under…

Chemical Physics · Physics 2021-10-06 Clàudia Climent , David Casanova , Johannes Feist , Francisco J. García-Vidal

Two dimensional (2D) semiconductor materials of transition-metal dichalcogenides (TMDCs) manifest many peculiar physical phenomena in the light-matter interaction. Due to their ultrathin property, strong interaction with light and the…

We study strong coupling between plasmons in monolayer charge-doped graphene and excitons in a narrow gap semiconductor quantum well separated from graphene by a potential barrier. We show that the Coulomb interaction between excitons and…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 Kirill A. Velizhanin , Tigran. V. Shahbazyan

Two-dimensional semiconductors inside optical microcavities have emerged as a versatile platform to explore new hybrid light-matter quantum states. The strong light-matter coupling leads to the formation of exciton-polaritons, which in turn…

Mesoscale and Nanoscale Physics · Physics 2021-11-05 Miguel Angel Bastarrachea-Magnani , Jannie Thomsen , Arturo Camacho-Guardian , Georg M. Bruun

Optical bound states in the continuum (BICs) provide a way to engineer very narrow resonances in photonic crystals. The extended interaction time in such systems is particularly promising for enhancement of nonlinear optical processes and…

Macroscopic spontaneous coherence of exciton-polariton in semiconductor cavity is one important research field in condensed matter physics. All-inorganic micro/nanowire Fabry-P\'erot cavity with excellent optical performance makes it…

Mesoscale and Nanoscale Physics · Physics 2017-11-16 Wenna Du , Shuai Zhang , Jia Shi , Jie Chen , Zhiyong Wu , Yang Mi , Zhixiong Liu , Yuanzheng Li , Xinyu Sui , Tom Wu , Yunfeng Xiao , Qing Zhang , Xinfeng Liu

Semiconductor microresonators embedding quantum wells can host tightly confined and mutually interacting excitonic, optical and mechanical modes at once. We theoretically investigate the case where the system operates in the strong…

We show that strong electron-electron interactions in cavity-coupled quantum materials can enable collectively enhanced light-matter interactions with ultrastrong effective coupling strengths. As a paradigmatic example we consider a…

Strongly Correlated Electrons · Physics 2019-09-04 Martin Kiffner , Jonathan Coulthard , Frank Schlawin , Arzhang Ardavan , Dieter Jaksch

Microscopic insights into nonlinear interactions are essential for advancing polaritonic devices. Existing studies often rely on phenomenological models that overlook important many-body processes. Based on a material-specific and…

Mesoscale and Nanoscale Physics · Physics 2026-03-31 Jonas K König , Jamie M Fitzgerald , Daniel Erkensten , Ermin Malic

Transition-metal dichalcogenides monolayers exhibit strong exciton resonances that enable intense light-matter interactions at room temperature (RT). However, the sensitivity of these materials to the surrounding environment and their…

We present a proposal for achieving light-induced superconductivity using exciton polaritons - hybrid light-matter particles of excitons (bound electron-hole pairs) and microcavity photons. In contrast to previous theories of…

Mesoscale and Nanoscale Physics · Physics 2025-08-14 Kenneth Choo , Olivier Bleu , Meera M. Parish , Jesper Levinsen

We present an experimental demonstration of strong coupling between a surface plasmon propagating on a planar silver substrate, and the lowest excited state of CdSe nanocrystals. Variable-angle spectroscopic ellipsometry measurements…

Materials Science · Physics 2009-12-16 D. E. Gómez , K. C. Vernon , T. J. Davis , T. L. Nguyen , P. Mulvaney

We investigate the interaction of excitons in a two dimensional lattice and photons in a planar cavity in the presence of disorder. The strong exciton-photon coupling is described in terms of polariton quasi-particles, which are scattered…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Michal Grochol , Carlo Piermarocchi

Monolayer transition metal dichalcogenides, known for exhibiting strong excitonic resonances, constitute a very interesting and versatile platform for investigation of light-matter interactions. In this work we report on a strong coupling…

Mesoscale and Nanoscale Physics · Physics 2019-05-20 M. Król , K. Lekenta , R. Mirek , K. Łempicka , D. Stephan , K. Nogajewski , M. R. Molas , A. Babiński , M. Potemski , J. Szczytko , B. Piętka

Single layers of transition metal dichalcogenides are two-dimensional direct bandgap semiconductors with degenerate, but inequivalent, `valleys' in the electronic structure that can be selectively excited by polarized light. Coherent…

Materials Science · Physics 2017-07-21 Yen-Jung Chen , Jeffrey D. Cain , Teodor K. Stanev , Vinayak P. Dravid , Nathaniel P. Stern

Polaritons are quasiparticles arising from the strong coupling of electromagnetic waves in cavities and dipolar oscillations in a material medium. In this framework, localized surface plasmon in metallic nanoparticles defining optical…

Coupling excitons with quantized radiation has been shown to enable coherent ballistic transport at room temperature inside optical cavities. Previous theoretical works employ a simple description of the material, depicting it as a…

Quantum Physics · Physics 2026-05-14 Saeed Rahmanian Koshkaki , Arshath Manjalingal , Logan Blackham , Arkajit Mandal

Semiconductor microcavity polaritons, formed via strong exciton-photon coupling, provide a quantum many-body system on a chip, featuring rich physics phenomena for better photonic technology. However, conventional polariton cavities are…

Mesoscale and Nanoscale Physics · Physics 2018-05-09 Long Zhang , Rahul Gogna , Will Burg , Emanuel Tutuc , Hui Deng

Strong coupling of two-dimensional semiconductor excitons with plasmonic resonators enables control of light-matter interaction at the subwavelength scale. Here we develop strong coupling in plasmonic nano-gap resonators that allow…