Article
Nanoscience & Nanotechnology
Min Zhang, Yuan Tian, Xingzhou Chen, Zheng Sun, Xiaolong Zhu, Jian Wu
Summary: This study reports the plasmon-exciton coupling in a hybrid system with a plasmonic metasurface. By finely tuning the geometric size of the plasmonic nanostructures, the dispersion relation of the coupled plasmon and exciton can be significantly modified. The experimental results show a strong coupling behavior with a achieved Rabi splitting up to 200 meV at room temperature, in ambient conditions. The effective tailoring of the plasmon-exciton coupling with the plasmonic metasurfaces provides a testing platform for studying quantum electromagnetics at the subwavelength scale and exploring plasmonic polariton Bose-Einstein condensation at room temperature.
Article
Chemistry, Multidisciplinary
Chun-Yuan Wang, Yungang Sang, Xinyue Yang, Soniya S. Raja, Chang-Wei Cheng, Haozhi Li, Yufeng Ding, Shuoyan Sun, Hyeyoung Ahn, Chih-Kang Shih, Shangjr Gwo, Jinwei Shi
Summary: This study demonstrates a strong coupling system achieved by coupling localized surface plasmon modes. Under specific conditions, a root N scaling of Rabi splitting energy is observed, along with a confirmed giant Rabi splitting in the visible spectral range. Additionally, the coupling strength reaches the ultrastrong coupling regime in some cases, representing about 10% of the mode energy.
Article
Physics, Applied
Chao Liu, Cuixiu Xiong, Min Li, Banxian Ruan, Baihui Zhang, Enduo Gao, Kuan Wu, Xia Chang, Wenke Xie, Hongjian Li
Summary: The study investigates the interaction between black phosphorus and metal-generated polaritons, revealing anti-crossing characteristics in the strong coupling region in the spectrum with angular resolution as a variable. The proposed structure can achieve a Rabi splitting of 65-150 meV, and increasing dielectric permittivity effectively enlarges the Rabi splitting, as demonstrated by the dispersion relation and coupled harmonic oscillator model. This research lays the foundation for the application of polarization devices and strong coupling platforms.
APPLIED PHYSICS EXPRESS
(2021)
Article
Chemistry, Multidisciplinary
Rongguang Du, Huatian Hu, Tong Fu, Zhifeng Shi, Shunping Zhang, Hongxing Xu
Summary: We have successfully extracted the individual decay channels of a coupled plasmon-exciton system using correlated single-particle absorption and scattering measurements. The plasmon channel exhibits clear Rabi splitting, while the exciton channel does not. The discrepancy in the absorption and scattering spectra is mainly attributed to the distinct contributions of the plasmon and exciton channels in the absorption and scattering process. These findings offer insights into plasmon-exciton interaction in an open cavity and have implications for the design of plexcitonic devices in ultrafast nonlinear nanophotonics.
Article
Physics, Applied
Xiao-Fei Yan, Qi Lin, Ling-Ling Wang, Gui-Dong Liu
Summary: In this paper, a diffraction-unlimited system composed of a borophene layer and perovskite grating is proposed to investigate the strong coupling between the borophene guiding plasmon (BGP) and perovskite exciton (PE) modes. The resonant energy of the BGP mode can be tuned to match the energy of the PE mode, resulting in a remarkable Rabi splitting. The proposed electrically tunable hybrid system enables high reflective amplitude modulation depth and phase range modulation.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Optics
Giuseppina Simone
Summary: The experimental and numerical results provide evidence of strong coupling between an Au layer and an azo-dye. Despite the poor conditions of coupling, the strong coupling reaches an outstanding strength through the matching between phonons and excitons.
Article
Optics
Ping Gu, Jing Chen, Siyu Chen, Chun Yang, Zuxing Zhang, Wei Du, Zhengdong Yan, Chaojun Tang, Zhuo Chen
Summary: Strong coupling between high-Q plasmonic whispering gallery mode and high-Q cavity plasmon resonance can lead to a record Rabi splitting energy of 805 meV, with new hybrid modes exhibiting an extralong lifetime and large electric field intensity enhancement. These findings may have potential applications in bright single-photon sources.
PHOTONICS RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Jiawei Sun, Yang Li, Huatian Hu, Wen Chen, Di Zheng, Shunping Zhang, Hongxing Xu
Summary: This minireview presents recent progress in strong plasmon-exciton coupling in plasmonic-TMD hybrid structures, focusing on the plasmon-exciton coupling between excitons in TMDs and plasmons in single nanoparticles, nanoparticle-over-mirrors, and plasmonic arrays. The future prospects of strong plasmon-exciton coupling at few-excitons level and the nonlinear response of these hybrid structures in the strong coupling regime are also discussed.
Article
Optics
Chenran Xu, Han Cai, Da-Wei Wang
Summary: The research team proposed a new configuration based on the Tamm structure to support the excitation of PhPs in both transverse-electric and transverse-magnetic modes, achieving VSC in a 300 nm thick molecular layer. This study provides a new platform for sensing vibrational modes in free space and controlling chemical reactions.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Xiaobo Han, Fang Li, Zhicong He, Yahui Liu, Huatian Hu, Kai Wang, Peixiang Lu
Summary: We demonstrate a double Rabi splitting of 348 meV in an Ag nanocavity embedding of methylene blue (MB) dye layer, which is attributed to the equilibrium state of monomer and dimer coexistence in MB dye. By observing different hybridized states at varying dye concentrations and tuning the size of the Ag nanocube, we provide clear evidence of the existence of a multi-mode strong coupling regime.
Article
Chemistry, Multidisciplinary
Jun-Yu Li, Wei Li, Jin Liu, Jie Zhong, Renming Liu, Huanjun Chen, Xue-Hua Wang
Summary: By integrating a single quantum dot with a single gold nanorod, the strong coupling between quantum dots and plasmonic nanoparticles has been achieved, opening up a new pathway for solid-state quantum information processing. Utilizing a wedge nanogap cavity, the plasmonic electric fields were effectively confined in the nanoshell of the quantum dot, leading to the largest spectral Rabi splitting reported so far.
Article
Optics
Tianchen Zhao, Qiang Ma, Yajie Bian, Yuyi Zhang, Yiting Liu, Xiaolei Zhang, Botao Wu, E. Wu, Shitao Lou, Qingyuan Jin
Summary: In this study, we investigated the strong coupling of TDBC molecules near pure nano-triangular Ag prisms or Ag@Au hollow nanoshells. The Rabi splitting was observed when TDBC molecules were deposited on these substrates with plasmonic resonance peak matching closely with the absorption band of TDBC J-aggregates. The decrease in photoluminescence intensity with increasing temperature confirmed the decreasing plasmon-exciton coupling interaction.
CHINESE OPTICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Wei Li, Renming Liu, Xuehua Wang
Summary: The study demonstrates that in plasmon-exciton strong coupling systems, increasing the number or oscillator strength of dye molecules can lead to the emergence of a third/fourth mode in the Rabi splitting beyond the J-C model. A unified quantum theory model reveals the contributions from the plasmon and exciton channels to the total photon absorption spectrum of the hybrid system.
RESULTS IN PHYSICS
(2021)
Article
Optics
Ignacio Vitoria, Carlos Ruiz Zamarreno, Aritz Ozcariz, J. J. Imas, Ignacio del Villar, Ignacio R. Matias
Summary: A new type of resonance called surface exciton plasmon resonance (SEPR) has been achieved in the development of sensors. By adjusting the incidence angle, the central wavelength of the resonance can be shifted, showing high sensitivity.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Wei Liu, Jinglei Wang, Haimei Luo, Guiqiang Liu
Summary: By exploiting the highly localized field enhancement in the near field, we demonstrate strong coupling in a dielectric-metal hybrid structure consisting of a perforated silicon nanoblock filled with a slotted silver nanodisk (nanoprism) at its center. This leads to a large Rabi splitting of 275 (262) meV, thanks to the generation of new hybrid energy states through strong anapole-plasmon coupling. Our findings offer a practical approach for achieving large Rabi splitting and provide an attractive platform for exploring the strong coupling regime in light-matter interaction.
IEEE PHOTONICS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Anne Nguyen, Jean-Jacques Greffet
Summary: This study analyzes the trade-off between fast modulation and efficiency of nanoscale incandescent sources and compares harmonic modulation and pulse modulation.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Cedric Blanchard, Leo Wojszvzyk, Cecile Jamois, Jean-Louis Leclercq, Celine Chevalier, Lydie Ferrier, Pierre Viktorovitch, Ioana Moldovan-Doyen, Francois Marquier, Jean-Jacques Greffet, Xavier Letartre
Summary: In this study, we introduce thermal metallo-dielectric metasurfaces as sources in the mid-infrared (IR) range. The emitter consists of a lossy metal, and the spectral and angular emission are controlled by a periodic array of high refractive dielectric resonators. We present a design that allows independent control of the emission bandwidth and the angular aperture, while ensuring a large emissivity. To validate the concept, we fabricated and characterized a metasurface, which showed good agreement with the theoretical predictions.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Yuzhe Xiao, Mikhail A. Kats, Jean-Jacques Greffet, Qiang Li, Georgia T. Papadakis
Summary: Thermal radiation refers to the emission of electromagnetic waves from hot objects. The engineering applications of thermal radiation are an active field of research, involving multiple disciplines such as materials science, photonics, and thermal physics.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Optics
N. Fayard, A. Bouscal, J. Berroir, A. Urvoy, T. Ray, S. Mahapatra, M. Kemiche, J. A. Levenson, J. -J. Greffet, K. Bencheikh, J. Laurat, C. Sauvan
Summary: This work proposes a new type of periodic dielectric waveguide that enables strong interactions between atoms and guided photons with unusual dispersion. Through computation, the researchers demonstrate that cold Rubidium atoms can be trapped as close as 100 nm from the structure, favoring emission into guided photons.
Article
Optics
V Blondot, C. Arnold, A. Delteil, D. Gerard, A. Bogicevic, T. Pons, N. Lequeux, J. P. Hugonin, J. J. Greffet, S. Buil, J. P. Hermier
Summary: We report the synthesis of hybrid light emitting particles with a diameter ranging from 100 to 500 nm, consisting of a compact CdSe/CdS/CdZnS semiconductor nanocrystal aggregate encapsulated by controlled nanometric size silica and gold layers. The addition of the gold nanoshell enhances the Purcell decay rate, as predicted by numerical simulations. Furthermore, we demonstrate the inhibition of Forster resonance energy transfer contribution.
Article
Optics
Hector Monin, Aurelian Loirette-Pelous, Eva De Leo, Aurelio A. Rossinelli, Ferry Prins, David J. Norris, Elise Baily, Jean-Paul Hugonin, Benjamin Vest, Jean-Jacques Greffet
Summary: We investigate the light emission of a patterned ensemble of colloidal quantum dots (cQDs) through experimental and theoretical study. Compared to a planar layer of cQDs, this system significantly modifies the emission spectrum and polarization. It demonstrates bright, directional, and polarized emission, including circular polarization in certain directions. We propose a light emission model based on a local Kirchhoff law, which accurately reproduces all experimental features. This model provides a quantitative figure of merit for assessing the emitted power. This work facilitates the systematic design of efficient ultrathin light emitting metasurfaces with controlled polarization, spectrum, and directivity.
Article
Optics
Anne Nguyen, Jean-Paul Hugonin, Anne-Lise Coutrot, Enrique Garcia-Caurel, Benjamin Vest, Jean-Jacques Greffet
Summary: This study reports the emission of polarized mid-wave infrared (MWIR) radiation from a 700 nm thick incandescent chiral metasurface. The polarization degree is above 0.5 with a circular polarization degree of 0.38 at 5 μm. The metasurface is heated by the Joule effect and the emission can be modulated beyond 10 MHz. This could enable detection techniques that use polarization as an additional degree of freedom.
Article
Nanoscience & Nanotechnology
Jean-Francois Bryche, Marlo Vega, Julien Moreau, Paul-Ludovic Karsenti, Paul Bresson, Mondher Besbes, Philippe Gogol, Denis Morris, Paul G. Charette, Michael Canva
Summary: Thermoplasmonics has gained increasing attention for generating nanoscale heat sources using photothermal effects in plasmonic nanoparticles. By exciting gold nanoparticles with ultrashort light pulses, high-speed light management and nanoscale heat-sensitive chemical reaction control can be achieved. This study investigates the non-uniform thermal energy distribution in cross-shaped nanostructures using femtosecond transient spectroscopy and a thermooptical numerical model. The results show that the polarization of the excitation light can control heat distribution in the nanostructures, and nonthermal electron ballistic displacement is crucial in fast transient heat dynamics models.
Article
Nanoscience & Nanotechnology
Camilo R. Perez de la Vega, Elise Bailly, Kevin Chevrier, Benjamin Vest, Jean-Paul Hugonin, Antoine Bard, Alban Gassenq, Clementine Symonds, Jean-Michel Benoit, Joel Bellessa, Jean-Jacques Greffet, Yannick De Wilde, Valentina Krachmalnicoff
Summary: The fabrication of nanostructured samples combining organic, inorganic emitters, and plasmons has been extensively studied for energy-harvesting applications and optoelectronic device design. However, understanding the interaction between each component in such a complex scenario is challenging.
Article
Optics
Aurelian Loirette-Pelous, Jean-Jacques Greffet
Summary: In this study, a new theoretical framework is built using established theoretical models and experimental results to explore the phenomena of photon Bose-Einstein condensation and photon thermalisation in semiconductors. The figures of merit for thermalisation and different experimental procedures are discussed. Finally, the fluctuations of the system and their relationship to different regimes are explored.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Laura Paggi, Alice Fabas, Hasnaa El Ouazzani, Jean-Paul Hugonin, Nikos Fayard, Nathalie Bardou, Christophe Dupuis, Jean-Jacques Greffet, Patrick Bouchon
Summary: The authors use low quality resonators to detect molecular absorption spectrum between 5 and 10 μm, resulting in improved system sensitivity.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Delphine Pommier, Zeilie Hufschmitt, Cheng Zhang, Yunhe Lai, Geirald Dujardin, Eric Le Moal, Christophe Sauvan, Jean-Jacques Greffet, Jianfang Wang, Elizabeth Boer-Duchemin
Summary: Quantum tunneling-driven optical nanoantennas play a vital role in the development of integrated plasmonic nanodevices. In this study, a tunneling junction between a nanoantenna and a thin gold film is used to electrically excite surface plasmons on the nanoscale. By employing an atomic force microscope, a novel method for completing the electrical circuit between the nanoantenna and the gold film is developed. Numerical modeling identifies the hybridized gap and antenna modes as the major contributors to the excitation of propagating surface plasmon polaritons.
Article
Optics
N. Fayard, I. Ferrier-Barbut, A. Browaeys, J. -J Greffet
Summary: This work proposes a protocol that bypasses the limitation of subradiant states by using a one-dimensional chain of N three-level atoms in a V-shaped configuration. The chain behaves as a time-varying metamaterial, enabling absorption, storage, and on-demand emission in a spectrally and spatially controlled mode. In the nonlinear regime, the transfer of doubly excited states from superradiant to subradiant states is demonstrated, providing a possible route for the optical characterization of their entanglement.
