Article
Chemistry, Multidisciplinary
Andrew Strang, Victoria Quiros-Cordero, Pascal Gregoire, Sara Pla, Fernando Fernandez-Lazaro, Angela Sastre-Santos, Carlos Silva-Acuna, Paul N. Stavrinou, Natalie Stingelin
Summary: This paper presents planar microcavities that are fully processed from solution, consisting of polymer-based distributed Bragg reflectors (DBRs) and a perylene diimide derivative (b-PDI-1) film. Strong light-matter coupling is achieved in these structures, as demonstrated by the energy-dispersion relation in reflectance and the group delay of transmitted light. The controllable production of the entire microcavity stack and the ability to precisely manipulate the refractive index of the inorganic/organic hybrid layers make it possible to design and produce microcavities with a wide spectral range of optical modes.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Patryk Kusch, Niclas S. Mueller, Martin T. Hartmann, Stephanie Reich
Summary: The study found that materials like MoS2 exhibit strong coupling of polaritons under visible light, making them excellent candidates for future polariton devices.
Article
Chemistry, Multidisciplinary
Jinjin Zhu, Fan Wu, Zihong Han, Yingxu Shang, Fengsong Liu, Haiyin Yu, Li Yu, Na Li, Baoquan Ding
Summary: Studied strong light-matter interactions in chiral plexcitonic systems using chiral plasmonic nanocavities, revealing Rabi splitting and anticrossing behavior, enhancing understanding of the optical characteristics in such systems.
Article
Physics, Applied
A. D. Belogur, D. A. Baghdasaryan, I. V. Iorsh, I. A. Shelykh, V. Shahnazaryan
Summary: We present a quantitative study of the nonlinear optical response of layered perovskites and find that the peculiar form of the interaction potential in these materials results in a dominant contribution of the Rabi splitting quench effect in the nonlinear optical response.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Physical
Erika Cortese, Simone De Liberato
Summary: This paper focuses on the exact diagonalization of a light-matter strongly coupled system with arbitrary losses, which can naturally handle different coupling scenarios and provide analytical expressions for specific cases. The results can be used to predict, fit, and interpret polaritonic experimental outcomes, with a Matlab code available for implementation.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Philip A. Thomas, Kishan S. Menghrajani, William L. Barnes
Summary: The authors demonstrate that phase singularities can be created and controlled, all optically, in a simple thin film of organic molecules using cavity-free strong light-matter coupling. This finding not only opens up new possibilities for the application of strong light-matter coupling, but also provides a new, simplified, and more versatile means of manipulating phase singularities.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Christoph P. Theurer, Florian Laible, Jia Tang, Katharina Broch, Monika Fleischer, Frank Schreiber
Summary: Utilizing strong light-matter coupling can modify the energy landscapes of excited states of organic semiconductors. This can be achieved by implementing them in optical microcavities, without the need for chemical modification. In this study, the strong coupling of Davydov transitions in polycrystalline pentacene thin films to surface lattice resonances supported by open cavities made of silver nanoparticle arrays was demonstrated. These thin films, together with the open architecture, are more suitable for device applications.
Article
Chemistry, Multidisciplinary
Pooja Bhatt, Kuljeet Kaur, Jino George
Summary: Recent experiments show that material properties like charge transport can be controlled by coupling to a vacuum electromagnetic field. The study found that in strongly coupled WS2, electron mobility is enhanced over 50 times at room temperature, and the I-on/I-off ratio of the device increases by 2 orders of magnitude without chemical modification of the active layer. These results suggest a promising way of modifying electronic properties by strong light-matter interaction.
Article
Chemistry, Multidisciplinary
Kuniyuki Miwa, Souichi Sakamoto, Akihito Ishizaki
Summary: The energetic positions of molecular electronic states at molecule/electrode interfaces play a crucial role in determining the transport and optoelectronic properties of molecular junctions. A study investigates electroluminescence from single-molecule junctions where the molecule is strongly coupled with the vacuum electromagnetic field in a plasmonic nanocavity. It demonstrates an improvement in the electroluminescence efficiency by selectively controlling the formation of the lowest-energy excited state through strong light-matter coupling. The research findings contribute to manipulating optoelectronic conversion in molecular junctions and provide design principles for efficient molecular optoelectronic devices.
Article
Optics
Raphael F. Ribeiro, Jorge A. Campos-Gonzalez-Angulo, Noel C. Giebink, Wei Xiong, Joel Yuen-Zhou
Summary: The study shows that nonlinear effects in molecular systems can be significantly enhanced in microcavities, particularly when multipolariton states are resonant with molecular multiphoton transitions. The model predicts significant enhancement of two-photon absorption cross-sections in microcavities compared to free space, with potential applications in resonant nonlinear-response enhancement.
Review
Chemistry, Physical
Tao E. Li, Bingyu Cui, Joseph E. Subotnik, Abraham Nitzan
Summary: This article reviews the current status of strong light-matter coupling, including an introduction to molecular polaritonics and collective response aspects of light-matter interactions, an overview of key experimental observations, and our current theoretical understanding of the effect of strong light-matter coupling on chemical dynamics. Additionally, it outlines potential applications in energy conversion processes and identifies pending technical issues in theoretical approaches.
ANNUAL REVIEW OF PHYSICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Wassie Mersha Takele, Lukasz Piatkowski, Frank Wackenhut, Sylwester Gawinkowski, Alfred J. Meixner, Jacek Waluk
Summary: The study investigates the Raman scattering properties of different molecules under vibrational strong coupling conditions. While polariton states are observed in the IR transmission spectra, they are not detected in the Raman spectra. Results also suggest that changes in the Raman spectra are not necessarily caused by strong coupling, but by surface enhancement effects.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Lijun Zhang, Karl Ridier, Oleksandr Ye. Horniichuk, Steïphane Calvez, Lionel Salmon, Gaïbor Molnar, Azzedine Bousseksou
Summary: The formation of hybrid light-matter states, which allows control of quantum-mechanical states and manipulation of molecular materials, has been observed in switchable strong light-matter coupling involving bistable spin-crossover molecules. The thermally induced switching between low-spin and high-spin states of these molecules enables fine control of the light-matter hybridization strength, offering the possibility of reversible switching between ultrastrong- and weak-coupling regimes within a single photonic structure. This work demonstrates the potential of spin-crossover molecular compounds in the development of tunable polaritonic devices and polaritonic chemistry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Ming-Hsiu Hsieh, Alex Krotz, Roel Tempelaar
Summary: Mean-field mixed quantum-classical dynamics offers an affordable way to model quantum electrodynamical phenomena by treating the optical field and its vacuum fluctuations classically. However, when the light-matter coupling becomes strong, it suffers from an unphysical transfer of energy out of the vacuum. We resolve this issue by introducing an additional set of classical coordinates that represent vacuum fluctuations scaled by the instantaneous ground-state population of the atom, which not only prevents the energy transfer but also improves the accuracy of atomic population and optical field dynamics.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Optics
D. G. Suarez-Forero, D. W. Session, M. Jalali Mehrabad, P. Knuppel, S. Faelt, W. Wegscheider, M. Hafezi
Summary: The interplay between time-reversal symmetry breaking and strong light-matter coupling in two-dimensional gases brings intriguing aspects to polariton physics. This combination can lead to a polarization/spin-selective light-matter interaction in the strong coupling regime. We demonstrate circular-polarization dependence of the vacuum Rabi splitting by coupling a 2D gas in the quantum Hall regime to a microcavity, providing a quantitative understanding of the phenomenon.
Article
Physics, Applied
P. John, P. Vennegues, H. Rotella, C. Deparis, C. Lichtensteiger, J. Zuniga-Perez
Summary: Epitaxial growth of Mg3N2 thin films by molecular beam epitaxy has been achieved, with the microstructure displaying column twist but narrow rocking curve peaks do not necessarily indicate high crystalline quality.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Condensed Matter
M. Nemoz, F. Semond, S. Rennesson, M. Leroux, S. Bouchoule, G. Patriarche, J. Zuniga-Perez
Summary: The diffusion at the AlN/Al0.3Ga0.7N interface was found to be weakly concentration-dependent and more strain-dependent. Unintentional annealing during long growth runs resulted in the formation of AlGaN graded layers at each interface.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Physics, Applied
P. John, M. Al Khalfioui, C. Deparis, A. Welk, C. Lichtensteiger, R. Bachelet, G. Saint-Girons, H. Rotella, M. Hugues, M. Grundmann, J. Zuniga-Perez
Summary: Single-crystalline Zn3N2 thin films were successfully grown on MgO and YSZ substrates with different orientations achieved depending on growth conditions. The films exhibited systematic n-type and degenerate behavior with varying carrier concentrations and electron mobilities, leading to optical bandgaps in the range of 1.05-1.37 eV. Hall effect measurements showed that ionized impurity scattering was the main limiting factor for mobility in the films.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Multidisciplinary Sciences
Qinghua Song, Mutasem Odeh, Jesus Zuniga-Perez, Boubacar Kante, Patrice Genevet
Summary: By exploiting the topological features of non-Hermitian matrices near singular points, an additional degree of freedom was introduced to address optical phase engineering in optical metasurfaces. Choosing metasurface building blocks to encircle a singularity allowed for the engineered full 2π-phase on a specific reflected polarization channel with topological protection. The ease of implementation and compatibility with other phase-addressing mechanisms demonstrate the industrial applicability of topological properties in metasurface technology at optical frequencies.
Article
Physics, Multidisciplinary
Leo Mallet-Dida, Pierre Disseix, Francois Reveret, Francois Medard, Blandine Alloing, Jesus Zuniga-Perez, Joel Leymarie
Summary: This paper investigates the bleaching phenomenon of excitons in high-quality GaN samples under high excitation intensities. Through micro-photoluminescence and time-resolved experiments, the effect of excitation intensity on carrier lifetime is studied, and the occurrence of a Mott transition at a specific carrier concentration is discovered.
NEW JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Julien Bosch, Pierre-Marie Coulon, Sebastien Chenot, Marc Portail, Christophe Durand, Maria Tchernycheva, Philip A. Shields, Jesus Zuniga-Perez, Blandine Alloing
Summary: This paper proposes three different strategies, chemical, physical, or thermal etching, to remove the SiGaxNy layer on the sidewalls of GaN core-shell wires, thereby improving their optical quality. Chemical etching with H3PO4 enhances the emissive coverage and luminescence intensity, while removing deep-defect emissions from the high growth temperature.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Xiaodan Lyu, Qinghai Tan, Lishu Wu, Chusheng Zhang, Zhaowei Zhang, Zhao Mu, Jesus Zuniga-Perez, Hongbing Cai, Weibo Gao
Summary: This study investigates the strain properties of boron vacancy centers in hexagonal boron nitride using optical and Raman spectroscopy techniques, demonstrating their potential for quantum sensing and in situ imaging of strain under working conditions.
Article
Physics, Applied
H. Souissi, M. Gromovyi, T. Gueye, C. Brimont, L. Doyennette, D. D. Solnyshkov, G. Malpuech, E. Cambril, S. Bouchoule, B. Alloing, S. Rennesson, F. Semond, J. Zuniga-Perez, T. Guillet
Summary: In this study, we experimentally demonstrate the difference between a ridge polariton laser and a conventional edge-emitting ridge laser operating under electron-hole population inversion. We find that the laser effect can be achieved in a ridge polariton laser with just 15% of the cavity length used as an exciton reservoir, whereas this would not be possible in a conventional ridge laser. We also observe that the polaritonic gain in the ridge polariton laser is about 10 times larger than that in equivalent GaN lasers.
PHYSICAL REVIEW APPLIED
(2022)
Article
Crystallography
Jean Massies, Wanda Isnard, Jesus Zuniga-Perez, Jean-Yves Duboz
Summary: We used kinetic Monte Carlo simulations to model the growth of InGaN alloys on perfectly oriented and misoriented GaN surfaces. As the temperature increases, we observed two phenomena: composition pulling along the growth direction and lateral indium rich cluster formation. Both phenomena are caused by strain, and temperature enables their manifestation. The transition from statistical alloys to heterogeneous layers with indium rich clusters occurs as the growth temperature increases, and this transition can be quantified using a cluster index based on the spatial distribution of In and Ga atoms.
JOURNAL OF CRYSTAL GROWTH
(2023)
Article
Chemistry, Multidisciplinary
Ruihua He, Max Meunier, Zhaogang Dong, Hongbing Cai, Weibo Gao, Jesus Zuniga-Perez, Xiaogang Liu
Summary: Inorganic halide perovskite quantum dots have been widely used as efficient active materials in optoelectronic applications. In this work, we coupled a layer of perovskite quantum dots to dielectric Mie resonators to simultaneously exploit the Purcell effect and increase light extraction, resulting in an 18-fold increase in luminescence. Our numerical simulations and experimental measurements revealed the interplay of these two effects and provided guiding principles for maximizing the output intensity of quantum emitters and classical emitters in perovskite-based optoelectronic devices.
Article
Nanoscience & Nanotechnology
Max Meunier, John J. H. Eng, Zhao Mu, Sebastien Chenot, Virginie Brandli, Philippe de Mierry, Weibo Gao, Jesus Zuniga-Perez
Summary: In 2018, a new single-photon source with high potential was discovered in gallium nitride, offering telecom wavelength emission, record-high brightness, good purity, and operation at room temperature. This article discusses the challenges associated with a low spatial density and a spectrally wide distribution of emitters in GaN layers, and describes the design and fabrication of bullseye antennas. The findings demonstrate that telecom single-photon emitters in GaN are well adapted for single-photon applications, but highlight the numerous difficulties that still need to be overcome for actual quantum photonic applications.
Article
Physics, Applied
Kilian Baril, Pierre-Marie Coulon, Mrad Mrad, Nabil Labchir, Guy Feuillet, Matthew Charles, Cecile Gourgon, Philippe Vennegues, Jesus Zuniga-Perez, Blandine Alloing
Summary: In this paper, three pendeo-epitaxy growth approaches were used to reduce the threading dislocation density (TDD) of 20 x 20 μm² GaN platelets for micro light-emitting diode (mu LED) development. The approach relied on the coalescence of GaN crystallites grown on deformable pillars etched into a silicon-on-insulator substrate. By taking advantage of the creeping properties of SiO2 at GaN epitaxial growth temperature, the crystallites were aligned and grain boundary dislocations were reduced. Additionally, this bottom-up approach eliminated the need for dry plasma etching in mu LED fabrication, which typically deteriorates sidewalls and reduces display efficiency.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Geoffrey Kreyder, Lea Hermet, Pierre Disseix, Francois Medard, Martine Mihailovic, Francois Reveret, Sophie Bouchoule, Christiane Deparis, Jesus Zuniga-Perez, Joel Leymarie
Summary: The study proposes the use of coherent emission of exciton polaritons to lower the lasing threshold, eliminating the need for exciton dissociation in a classical semiconductor laser. The researchers combined experimental measurements with a model that includes changes in permittivity based on carrier density to clearly demonstrate the polaritonic nature of lasing. The study used angle-resolved photoluminescence to observe and monitor the shift in polaritonic dispersion towards photonic dispersion as pump optical intensity increased, supported by a model accounting for oscillator strength reduction and band gap renormalization. Measurement of carrier lifetime at optical intensities during polariton lasing confirmed lower carrier density than reported Mott density for zinc oxide.
Proceedings Paper
Engineering, Electrical & Electronic
T. Guillet, H. Souissi, M. Gromovyi, T. Gueye, C. Brimont, L. Doyennette, G. Kreyder, F. Reveret, P. Disseix, F. Medard, J. Leymarie, G. Malpuech, D. Solnyshkov, B. Alloing, S. Rennesson, F. Semond, J. Zuniga-Perez, E. Cambril, S. Bouchoule
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
Article
Physics, Multidisciplinary
O. Herrfurth, S. Richter, M. Rebarz, S. Espinoza, J. Zuniga-Perez, C. Deparis, J. Leveillee, A. Schleife, M. Grundmann, J. Andreasson, R. Schmidt-Grund
Summary: The full transient dielectric-function (DF) tensor of ZnO after UV-laser excitation is obtained by femtosecond time-resolved spectroscopic ellipsometry, showing pump-induced switching from positive to negative birefringence and contributions of inter-valence-band transitions. Line-shape analysis above the band gap reveals a maximal dynamic increase in the transient exciton energy and exponential Urbach-rule absorption below the band gap.
PHYSICAL REVIEW RESEARCH
(2021)