Article
Optics
Gui-Ming Pan, Li-Feng Yang, Fang-Zhou Shu, Yan-Long Meng, Zhi Hong, Zhong-Jian Yang
Summary: This study demonstrates that the interaction between magnetic dipole emitters and silver oligomers can excite anapole states with unique properties, effectively suppressing radiative power and providing an ideal platform for studying non-radiative transitions. These findings introduce magnetic anapoles to plasmonics and open up new possibilities for the development of high-performance magnetic-dipole-based optoelectronic devices.
PHOTONICS RESEARCH
(2022)
Article
Optics
Yi Yu, Aurimas Sakanas, Aref Rasoulzadeh Zali, Elizaveta Semenova, Kresten Yvind, Jesper Mork
Summary: Quantum noise is suppressed by a bound state in the continuum (BIC) approach, enabling a microlaser with narrow linewidth compared to other small lasers.
Article
Optics
Ajith P. Ravishankar, Felix Vennberg, Srinivasan Anand
Summary: Hybrid metal/dielectric nanostructures in metasurfaces offer advantages such as confining electromagnetic fields in subwavelength regions and reducing absorption losses. The presented metallodielectric hybrid metasurface design demonstrates the excitation of anapole states and surface plasmon polaritons, allowing for strong light-matter interactions. This design shows promise for open cavity optical systems operating at room temperatures.
Article
Optics
Zhiwei Hu, Ximin Cui, Yang Li, Xiaobo Han, Huatian Hu
Summary: This study numerically demonstrates a simple plasmonic nanocube-hexagonal-nanoplate heterodimer that exhibits a strong, tunable self-induced transparency window. It also observes multiple exciton-induced transparency windows. These findings are important for understanding and manipulating light-matter interactions.
Article
Nanoscience & Nanotechnology
Zhiyi Li, Xiuye Zhang, Dainan Zhang, Bo Liu, Hao Meng, Jiapeng Xu, Zhiyong Zhong, Xiaoli Tang, Huaiwu Zhang, Lichuan Jin
Summary: The research investigates the magnetization dynamics of a YIG/Au/YIG magnon valve, revealing the presence of asymmetric Fano resonance qualitatively and quantitatively. The study provides insights into the relationship between the Fano resonance feature and the interaction sign, paving the way for the development of quantum information devices based on magnon valves.
Article
Nanoscience & Nanotechnology
Tailin Zhang, Xingyuan Zhang, Yun Shen, Yinsheng Xu, Laibin Luo, Jianqiang Gu, Sijia Yang, Jie Xu, Xiaohua Deng
Summary: In this study, a terahertz BIC metasurface structure composed of metal split ring resonators (SRRs) was designed. The leakage process of BIC states to the far field was studied by changing the gap width of SRR based on the symmetric protection principle of superlattice mode. By introducing multiple SRRs and changing their arrangement, three superlattice modes and BIC states were obtained. Experimental observations confirmed the leakage of BIC states into the far field, forming observable quasi-BIC patterns. A feasible method for flexible design and implementation of BIC was verified.
Article
Physics, Applied
Xue Li, Hengyuan Jiao, Mingqiang Zhu, Tao Deng, Jingye Sun
Summary: In this paper, a novel microfluidic channel embedded terahertz metamaterial sensor is proposed for the detection of small volume liquid samples. The sensor combines microfluidic superstrate with substrate, allowing for easy fabrication and sensitive detection of liquid-based samples.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Physics, Applied
G. J. Hornig, K. G. Scheuer, R. G. DeCorby
Summary: We have observed the acoustic vibrational modes of liquid droplets up to 40 MHz by coupling them to an ultra-sensitive optomechanical sensor. These modes manifest as Fano resonances in the thermal noise spectrum of the sensor, driven only by thermal Brownian motion.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Multidisciplinary
Yi Chen, Ke Wang, Muamer Kadic, Sebastien Guenneau, Changguo Wang, Martin Wegener
Summary: Previous theory and experiment have shown that introducing strong nonlocal interactions in addition to local interactions into metamaterials can lead to unusual wave dispersion relations. In this study, the authors investigate the frequency-dependent acoustical phonon transmission in a slab of nonlocal metamaterial. They find a series of bound states in the continuum and sharp transmission resonances next to sharp transmission minima. The findings are validated by numerical calculations on three-dimensional metamaterial microstructures.
COMMUNICATIONS PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Anar Ospanova, Maria Cojocari, Alexey Basharin
Summary: Multipole decomposition method is a promising tool for studying the radiating or scattering responses of electromagnetic sources or particles. It can be applied to complex and compound scatterers, such as multilayer particles, clusters, or asymmetrical systems. However, the radiation fields of real sources can be described by a series of multipoles, including higher multipoles and toroidal moments, rather than just electric or magnetic dipole moments.
Article
Optics
Bing Meng, Jianfu Wang, Chaobiao Zhou, Lujun Huang
Summary: This study investigates oligomer metasurfaces and their resonance modes. The researchers find that by perturbing the structure's symmetry, multiple resonance modes associated with optical bound states in the continuum (BICs) can be excited. By moving the positions of nanodisks, different optical characteristics can be controlled, providing a route for realizing high-quality oligomer metasurfaces in experiments.
Article
Chemistry, Physical
R. Wang, J. Sous, M. Aghigh, K. L. Marroquin, K. M. Grant, F. B. V. Martins, J. S. Keller, E. R. Grant
Summary: Out-of-equilibrium, strong correlation in a many-body system can trigger emergent properties that act to constrain the natural dissipation of energy and matter. This study focuses on the initial stages of avalanche and quench in a state-selected Rydberg gas to characterize intermolecular interaction dynamics using mm-wave spectroscopy.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Xin Yan, Chengcheng Huang, Zijing Zhang, Fu Qiu, Wenjia Liu, Ruochen Xu, Ziqun Wang, Zhenhua LI, Xiaofei Hu, Chao Wang, Yonggang Zhang, Haiyun Yao, Lanju Liang, Jianquan Yao
Summary: This paper presents a terahertz metamaterial structure with multiple physical features including EIT-like resonance, Fano resonance, and terahertz wave absorption. The device consists of a metal structure and a GaAs layer, with the conductivity of GaAs adjustable by optical pump. By adjusting the conductivity of GaAs, the resonance can be modulated with a maximum modulation depth of 96.5%. The device exhibits excellent performance in refractive index sensing, with a maximum sensitivity of 513 GHz/RIU and a maximum FOM value of 39.5. It has wide applications in terahertz sensors, slow-light devices, and terahertz modulators.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Optics
Yue Zhang, Tao Xiong, Dandan Dong, Wei Wang, Cheng Sun
Summary: This study investigates the plasmonic properties of a symmetry-breaking system composed of rhodium dual broken nanorings in the ultraviolet-visible regime. By varying the separation, light polarization, and relative orientation of the broken angles, the plasmonic scattering efficiency is examined using the finite difference time domain method. Multiple plasmonic resonances are discovered, and their asymmetry-induced Fano-like lineshapes are fitted to a model employing multiple Fano lineshape functions. The resonance wavelengths, spectral widths, and characteristic q values are determined, providing quantitative insights into the plasmonic characteristics of the system. The findings of this study have potential implications for the design of plasmonic devices operating at ultraviolet-visible wavelengths.
APPLIED PHYSICS B-LASERS AND OPTICS
(2023)
Article
Chemistry, Multidisciplinary
Kaiwen Luo, Zhijing Huang, Xianpeng Lv, Wentao Qiu, Heyuan Guan, Tiefeng Yang, Thierry Grosjean, Huihui Lu
Summary: We study the directional coupling of light to transverse electric (TE) polarized Bloch surface waves (BSWs) through spinning magnetic dipoles. A high-index nanoparticle as a magnetic dipole and nano-coupler is used to couple light into BSWs, with the helicity of the light controlling the directionality of emerging BSWs. Identical silicon strip waveguides on either side of the nano-coupler are utilized to confine and guide the BSWs, allowing for directional nano-routing with circularly polarized illumination.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Wei Ma, Yihao Xu, Bo Xiong, Lin Deng, Ru-Wen Peng, Mu Wang, Yongmin Liu
Summary: In this study, a new approach is proposed for the automatic design of multifunctional metasurfaces by embedding machine learning models in optimization loops. Unlike traditional methods, this end-to-end framework maximizes the design space and pushes the multifunctional design capacity to its limit, resulting in experimentally demonstrated metasurface focusing lenses and holograms. The data-driven scheme shows superior capability in photonics design and has the potential to accelerate the development of complex devices and systems for optical display, communication, and computing.
ADVANCED MATERIALS
(2022)
Article
Optics
Cheng-Yao Li, Chaowei Chen, Yu Liu, Jing Su, Dong-Xiang Qi, Jie He, Ren-Hao Fan, Qing Cai, Qingxuan Li, Ruwen Peng, Xian-Rong Huang, Mu Wang
Summary: This study experimentally demonstrates a multiple-polarization photodetector based on a hybrid organic-inorganic perovskite metasurface, which can simultaneously detect both linearly polarized and circularly polarized light. The results highlight the potential of perovskite metasurfaces for integrated photoelectric applications.
Article
Physics, Multidisciplinary
Ya-Jun Gao, Zheng Wang, Yue Jiang, Ru-Wen Peng, Zi-Yu Wang, Dong-Xiang Qi, Ren-Hao Fan, Wen-Jie Tang, Mu Wang
Summary: This article introduces a method for the transformation and distribution of photon pairs using dielectric metasurfaces, which efficiently achieves the distribution and transformation of entangled photon states. The experimental results demonstrate the potential for integrating quantum information networks.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Applied
Xiangdong Meng, Ruixuan Liu, Hongchen Chu, Ruwen Peng, Mu Wang, Yang Hao, Yun Lai
Summary: This study proposes a scheme of through-wall wireless communication using purposely designed passive metalenses. The metalenses can efficiently focus incoming waves to the other side of the wall, significantly enhancing wireless signal strength. By demonstrating its application in the 5GHz Wi-Fi environment, the study shows that the metalenses can reconnect broken network channels due to weak signal strength and significantly increase data transmission rates. This research provides an effective solution for wireless communication in future eco-friendly buildings.
PHYSICAL REVIEW APPLIED
(2022)
Article
Physics, Applied
Zheng Wang, Yue Jiang, Ya-Jun Gao, Ren-Hao Fan, Dong-Xiang Qi, Rui Zhong, Hu-Lin Zhang, Ru-Wen Peng, Mu Wang
Summary: This study introduces a solution for quantum state tomography of polarization-entangled states using nondiffractive silicon metasurfaces as a replacement for traditional optical elements. The experimental results show high transmission efficiency and fidelity, while significantly reducing the number of conventional optical components.
APPLIED PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Bo Xiong, Yu Liu, Yihao Xu, Lin Deng, Chao-Wei Chen, Jia-Nan Wang, Ruwen Peng, Yun Lai, Yongmin Liu, Mu Wang
Summary: By introducing engineered noise to the precise solution of Jones matrix elements, we have surpassed the fundamental limit of polarization multiplexing capacity of metasurfaces. Through experiments, we have achieved up to 11 independent holographic images using a single metasurface illuminated by visible light with different polarizations, which is the highest reported capacity for polarization multiplexing. With the combination of position multiplexing, the metasurface is capable of generating 36 distinct images, forming a holographic keyboard pattern. This discovery opens up new possibilities for high-capacity optical display, information encryption, and data storage.
Article
Physics, Applied
Chao-Wei Chen, Le-Di Chen, Cheng-Yao Li, Xiang-Yu Wu, Qing Cai, Ren-Hao Fan, Dong-Xiang Qi, Ru-Wen Peng, Mu Wang
Summary: In this work, the strong coupling of localized surface plasmons (LSPs) and intermolecular vibration mode at THz was observed, resulting in Rabi splitting effect. The measured data confirmed that the splitting originated from the strong coupling between LSPs and molecular vibration mode. This research also demonstrated the potential of implementing molecular concentration sensing based on this strong coupling effect.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Fei Chen, Ren-Hao Fan, Jun-Xuan Chen, Yu Liu, Ben-Qi Hou, Ru-Wen Peng, Mu Wang
Summary: Smith-Purcell radiation (SPR) is the far-field, strong, spike radiation generated by the interaction of the evanes-cent Coulomb field of the moving charged particles and the surrounding medium. In this study, tunable SPR is achieved by moving an electron beam parallel to a 2D metallic nanodisk array. By rotating the nanodisk array, the emission spectrum of SPR splits into two peaks with different wavelengths, which can be tuned by increasing the tuning angle.
Article
Nanoscience & Nanotechnology
Wenjie Ji, Jie Luo, Hongchen Chu, Xiaoxi Zhou, Xiangdong Meng, Ruwen Peng, Mu Wang, Yun Lai
Summary: By using epsilon-near-zero materials as claddings, the crosstalk between adjacent waveguides in photonic integrated circuits can be effectively prevented, leading to ultra-compact waveguide systems with extremely thin thickness.