Engineering the spatial confinement of exciton polaritons in semiconductors

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A polariton is a quasiparticle formed from the coupling of a confined photon in a cavity to electronic excitation, like exciton in a semiconductor. This dissertation reports on series of experiments in confined polariton interaction by design, fabrication, ...

Achieving strong coupling between emitters and cavity photons holds an important position in the light-matter interaction due to its applications such as polariton lasing, all-optical switches, and quantum information processing. However, room-temperature ...

Excitons, Coulomb-bound electron-hole pairs, are the fundamental excitations governing the optoelectronic properties of semiconductors. Although optical signatures of excitons have been studied extensively, experimental access to the excitonic wave functio ...

Quantum dots (QDs) based on III-nitride semi-conductors are promising for single photon emission at noncryogenic temperatures due to their large exciton binding energies. Here, we demonstrate GaN QD single photon emitters operating at 300 K with g((2)) (0) ...

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This thesis is devoted to the study of microcavity polariton systems, in which the strong coupling occurs between more than one exciton or photon modes i.e. multimode polaritons. The first part of this work states the theoretical background of light-matter ...

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The interaction of light and matter enables nonlinear frequency conversion and the creation of coherent currents. The optical control of electric currents is of fundamental relevance and prominent research focus in the last decades. These photocurrents ena ...

Engineering the spatial confinement of exciton polaritons in semiconductors

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Spatial quantum-interference landscapes of multi-site-controlled quantum dots coupled to extended photonic cavity modes

Polariton lasing in AlGaN microring with GaN/AlGaN quantum wells

Plasmonic biosensor enabled by resonant quantum tunnelling

Ultrafast carrier and quasiparticle dynamics in strongly confined perovskite nanoplatelets

Electro-optic sampling of classical and quantum light

Optoelectronics based on the spin-valley physics of 2D materials

Interaction of Confined Polaritons in Microcavity Structures

Strong plasmon-exciton coupling in transition metal dichalcogenides and plasmonic nanostructures

Direct measurement of key exciton properties: Energy, dynamics, and spatial distribution of the wave function

Toward Bright and Pure Single Photon Emitters at 300 K Based on GaN Quantum Dots on Silicon

Exciton and Carrier Dynamics in Two-Dimensional Perovskites

Probing Alloy Formation Using Different Excitonic Species: The Particular Case of InGaN

Dynamics of nanoscale systems probed by time-resolved STM-induced luminescence

Electron Dynamics in Anatase TiO2 Nanoparticles by Ultrafast Broadband Deep-Ultraviolet Spectroscopy

Phonon-Driven Selective Modulation of Exciton Oscillator Strengths in Anatase TiO2Nanoparticles

On the physics of multimode polaritons

Propagating Polaritons in III-Nitride Slab Waveguides

Strongly bound excitons in anatase TiO2 single crystals and nanoparticles

Bosonic lasing and trapping of a dressed photon fluid in InGaN at room temperature

Photoinduced Second-Order Nonlinearities in Centrosymmetric Media