Article
Chemistry, Physical
Yuqin Zhang, Jianshan An, Xingqi An, Xiangyu Zeng, Changwei He, Guiyuan Liu, Chuanfu Cheng, Hongsheng Song
Summary: The superposition of orbital angular momentum (OAM) in a surface plasmon polariton (SPP) field has attracted much attention in recent years. In this study, a plasmonic metasurface consisting of segmented spiral-shaped nanoslits is proposed to generate the superposition of two OAM states with arbitrary topological charges (TCs) and independently modulate their relative amplitudes. This design scheme offers opportunities for developing practical plasmonic devices and on-chip applications.
Article
Chemistry, Multidisciplinary
Aiping Yang, Xinrui Lei, Peng Shi, Fanfei Meng, Min Lin, Luping Du, Xiaocong Yuan
Summary: Photonic spin skyrmions with deep-subwavelength features have attracted significant attention in recent years. However, manipulating the spin structure in a desired manner remains a challenge, which is crucial for developing skyrmion-based applications. In this study, an approach of optical spin manipulation using the spin-momentum equation is proposed to investigate the spin texture in a photonic skyrmion-pair. The optimized spin texture exhibits a unique linear variation of spin angular momentum along the line connecting the two skyrmion centers, and it is experimentally verified. This spin texture is then applied in a displacement-sensing system with pico-metric sensitivity, offering a new pathway for optical modulation in nanophotonics.
Article
Optics
Yihua Bai, Qing Zhang, Yuanjie Yang
Summary: This study demonstrates a wavelength-tunable plasmonic vortex generator that controls the position and topological charge of vortices by designing an Archimedean spiral on a geometric metasurface. This design can be applied to integrated and high-dimensional on-chip devices.
Article
Chemistry, Multidisciplinary
Xinghui Liu, Mengfei Xue, Jianing Chen
Summary: An on-chip integrated mid-infrared Fabry-Perot polariton resonator with broadband optical response and multi-field tunability has been achieved using surface plasmons in InAs TSL nanowires. The F-P plasmonic resonance of the nanowires was studied using a scattering-type near-field optical microscope and nano Fourier transform infrared spectroscopy. The Q factor of the resonances was found to be 5-10, indicating their potential for integrated nanophotonic circuits.
Article
Chemistry, Multidisciplinary
Da-Jie Yang, Song-Jin Im, Yang Li, Chol-Song Ri, Kum-Song Ho, Ji-Song Pae, Qu-Quan Wang
Summary: This study provides insights into the complex plasmon behaviors with the physical dimension of orbital angular momentum (OAM) and proves that plasmonic nanostructures can function as efficient antennas to control the power of OAM beams. These findings expand our knowledge of nanoplasmonics in the OAM area and have promising applications in quantum information processing and dynamic sensing of ultraweak biosignals.
Article
Chemistry, Multidisciplinary
Shangtong Jia, Yongkang Li, Zeyang Xue, Kangyao Chen, Zhi Li, Qihuang Gong, Jianjun Chen
Summary: This paper proposes a method to freely control the multiple momentums of single photons using an anisotropic metasurface, where anisotropic nanoscatterers are arranged anisotropically. The phase-independent and phase-dependent schemes are used to independently control the spin angular momentums (SAMs) and linear momentums (LMs) of the photons, and three-channel single-photon emissions with independent SAMs and LMs are demonstrated in experiments.
ADVANCED MATERIALS
(2023)
Article
Optics
Chuangye Zhang, Changjun Min, Yuquan Zhang, Yanan Fu, Ling Li, Yulong Wang, Xiaocong Yuan
Summary: We propose and theoretically study a chiral plasmonic lens structure for the detection of cylindrical vector beams (CVBs). The structure can generate a single plasmonic focus, whose position depends on the incident angle and polarization order of the CVB. The incident CVB can be detected based on the focal position and incident angle, with the use of a coupling waveguide to avoid imaging of the entire plasmonic field. This structure shows great potential in applications such as CVB-multiplexing integrated communication systems.
CHINESE OPTICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Houquan Liu, Zhenghao Xie, Jiankang Xu, Libo Yuan
Summary: Photon angular momentum plays a crucial role in various applications, and accurate measurement of photon angular momentum is of great importance. However, most on-chip detectors can only achieve relative measurement and rely on the measurement of reference beams. In this paper, a simple on-chip detector is proposed, which can achieve absolute measurement of photon angular momentum through angle detection and also recognize photon spin angular momentum.
Article
Optics
Jialin Chen, Hongsheng Chen, Xiao Lin
Summary: This study theoretically investigates the transition radiation of swift electrons crossing a monolayer graphene using full Maxwell equations. The excitation of photons and graphene plasmons is found to favor different particle velocities, with higher velocities leading to better directivity and intensity for photons, and lower velocities enabling efficient excitation of graphene plasmons across a wider frequency range. The interaction between swift charged particles and 2D materials or van der Waals heterostructures shows promise for the design of terahertz on-chip radiation sources.
Article
Engineering, Electrical & Electronic
Hala Mossad Hassan, Nihal F. F. Areed, H. A. El-Mikati, Mohamed Farhat O. Hameed, S. S. A. Obayya
Summary: This paper proposes and analyzes a new design of hybrid plasmonic photonic crystal waveguide at a wavelength of 1550 nm. By adjusting the cladding geometry, it is found that long propagation length and good field confinement can be achieved.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Marko Obradov, Zoran Jaksic, Ivana Mladenovic, Anja Bartula, Olga Jaksic
Summary: The use of MXenes as alternative plasmonic materials in freestanding planar nanocomposites that support Tamm plasmon polaritons (TPP) offers advantages such as strong light screening ability and rich modal behavior, leading to improvements in functionality, especially spectral, directional, and polarization selectivity.
Article
Materials Science, Multidisciplinary
Xueyang Zong, Lixia Li, Kun Yu, Yufang Liu
Summary: This study demonstrates theoretically the active role of two-dimensional metallic photonic crystals (PhCs) as hybrid plasmonic-photonic lattices in light-matter interaction. By coupling optical waveguides with periodically arranged metallic nanodisks, the formation of waveguide-plasmon polaritons is achieved, showing strong coupling between waveguide-plasmon modes and excitons in WS2 at room temperature. Control over mode composition and coupling strength between polaritons by tuning lattice geometry reveals the LSPR-mediated energy transfer process, contributing to fundamental understanding and potential practical applications.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Fitri Oktafiani, Jun-Quan Chen, Po-Tsung Lee
Summary: Recent development in particle manipulation has increased the demand for dynamic optical tweezer structures. In this study, a plasmonic vortex lens (PVL) with multiple arms and a circular groove (CG) is proposed and demonstrated. Numerical simulations show that the PVL can efficiently rotate and trap microparticles by adjusting the polarization direction and groove radius. This research offers an efficient way to manipulate microparticles for various applications.
NANOSCALE ADVANCES
(2023)
Article
Optics
L. Avalos, A. K. Gonzalez-Alcalde, E. Chaikina, E. E. Garcia-Guerrero, A. A. Maradudin, E. R. Mendez
Summary: The study investigates the optical properties of metallic lamellar gratings with sub-wavelength period as a function of groove depth and width. Anomalies are observed under p-polarized illumination due to the excitation of surface plasmon polaritons (SPPs) and their interaction with plasmonic and photonic modes. The propagation constant of SPPs is affected by the presence of corrugations, with new resonances appearing for grooves deeper than half a wavelength.
OPTICS COMMUNICATIONS
(2021)
Article
Optics
Min-Soo Hwang, Ha-Reem Kim, Jungkil Kim, Bohm-Jung Yang, Yuri Kivshar, Hong-Gyu Park
Summary: This study demonstrates wavelength-scale, low-threshold, vortex and anti-vortex nanolasers with topological charges in an optical cavity formed by a topological disclination. The optical vortices of the lasing modes are clearly identified through the measurement results. This simple design procedure paves the way towards the development of next-generation optical communication systems.
Article
Chemistry, Physical
Lulu Yu, Liu Lu, Linghui Zeng, Xiaohong Yan, Xifeng Ren, Judy Z. Wu
Summary: Surface-enhanced Raman spectroscopy (SERS) of rhodamine 6G (R6G) was investigated on a hybrid nanostructure of double-aligned Ag nanowires (AgNWs) on a bilayer triangular MoS2 flake under excitation of polarized light. Enhanced R6G Raman signatures were achieved on the hybrid AgNWs-MoS2 SERS substrates, with the largest (lowest) enhancement observed when the polarization is perpendicular (parallel) to the axial direction of the aligned AgNWs. The SERS enhancement by the MoS2 in the hybrid AgNWs-MoS2 SERS substrates is primarily attributed to the enhanced evanescent electric field of the hot spot at the interface between AgNWs and MoS2, as revealed by theoretical simulation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Physics, Applied
Yunkun Wu, Xiaojing Liu, Xiaozhuo Qi, Liu Lu, Guoping Guo, Guangcan Guo, Xifeng Ren
Summary: The study demonstrates a cavity-free, broadband method for modulating and collecting the fluorescence of a single-photon emitter using a fiber taper-silver nanowire plasmonic probe. The interaction between the plasmonic probe and the single colloidal quantum dot significantly reduces the lifetime of the quantum dot by an average factor of 3.38. The proposed near-field modulation method shows potential for manipulating the luminescence of systems based on single-photon emitters with higher efficiency compared to traditional methods.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Ming Zhang, Lantian Feng, Ming Li, Yang Chen, Long Zhang, Deyong He, Guoping Guo, Guangcan Guo, Xifeng Ren, Daoxin Dai
Summary: By breaking the symmetry of a six-channel waveguide superlattice, we have successfully demonstrated a supercompact integrated quantum CNOT gate on silicon, with a significantly smaller footprint, high fidelity, and low excess loss, offering the possibility of realizing practical large-scale quantum information processing.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Liu Lu, Chenyang Wang, Looh Augustine Ngiejungbwen, Liang Zhang, Tiantian Zhao, Daifen Chen, Xifeng Ren
Summary: A new plasmonic nanofocusing metalens based on aperiodic silica grating arrays has been designed and investigated. By utilizing graphene surface plasmon, the infrared polarized light can be focused in a nanospot with a dynamically controlled focal length. The study also analyzes the variation of focusing efficiency with incident wavelength and Fermi level.
Article
Optics
Yao Zhao, Yang Chen, Zhi-Shan Hou, Bing Han, Hua Fan, Lin-Han Lin, Xi-Feng Ren, Hong-Bo Sun
Summary: This study investigates the propagation of polarization-dependent Bloch oscillations and demonstrates the polarization-dependent Bloch period using a polymer-based gradient waveguide array. The results provide a new paradigm for two-dimensional optical Bloch modes and highlight the influence of optical polarization in the same system, enabling the observation of richer physics related to Bloch oscillations.
Article
Optics
Di Zhang, Yang Chen, Shengchao Gong, Wei Wu, Wei Cai, Mengxin Ren, Xifeng Ren, Shuang Zhang, Guangcan Guo, Jingjun Xu
Summary: This study reports an all-optical dynamic modulation of photonic quantum states using a nonlinear metasurface. By tuning the properties of the metasurface, the transmission efficiency and phase delay of photons were controlled, effectively manipulating the entangled state. This work enriches the application of metasurfaces in quantum optics and makes them more practical.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Meng Li, Chu Li, Yang Chen, Lan-Tian Feng, Linyu Yan, Qian Zhang, Jueming Bao, Bi-Heng Liu, Xi-Feng Ren, Jianwei Wang, Shufeng Wang, Yunan Gao, Xiaoyong Hu, Qihuang Gong, Yan Li
Summary: This study successfully fabricates an on-chip path encoded photonic quantum Toffoli gate and demonstrates high truth-table fidelity using an optimized 3D configuration and overpass waveguide. Furthermore, a path encoded four-qubit controlled-controlled-controlled NOT gate is written to confirm the scalability of this resource-saving technique.
PHOTONICS RESEARCH
(2022)
Review
Optics
Lantian Feng, Ming Zhang, Jianwei Wang, Xiaoqi Zhou, Xiaogang Qiang, Guangcan Guo, Xifeng Ren
Summary: This paper reviews the research results and state-of-the-art technologies on the silicon photonic chip for scalable quantum applications, pointing out that some components have already met the requirements for further expansion. It also highlights the challenges ahead and future research directions in on-chip scalable quantum information applications.
PHOTONICS RESEARCH
(2022)
Article
Physics, Multidisciplinary
Li-Cheng Wang, Yang Chen, Ming Gong, Feng Yu, Qi-Dai Chen, Zhen-Nan Tian, Xi-Feng Ren, Hong-Bo Sun
Summary: This study quantifies the edge states and localization lengths in topological phase transitions through measuring the survival probability. The experiment provides an alternative approach for characterizing topological phase transitions and extracting critical exponents.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Applied
Aiping Liu, Wei Peng, Zirui Li, Xingping Zhou, Xi-Feng Ren, Chang-Ling Zou, Qin Wang
Summary: An integrated photonic device that converts on-chip waveguide modes to free-space optical angular momentum beams is proposed. The device consists of a polarization splitter rotator and a waveguide surface holographic grating. The output orbital angular momentum state can be controlled by the input polarization state. Numerical results show a conversion efficiency of above 14% (18%) for the transverse-magnetic (transverse-electric) mode to the optical angular momentum mode with l = - 1 (+ 1), with a fidelity up to 0.84 and a working bandwidth of approximately 40 nm for a fidelity above 0.8. The proposed device provides a feasible information channel between integrated optics and free space.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Lan-Tian Feng, Ming Zhang, Di Liu, Yu-Jie Cheng, Guo-Ping Guo, Dao-Xin Dai, Guang-Can Guo, Mario Krenn, Xi-Feng Ren
Summary: In this study, the authors experimentally demonstrate the quantum coherent superposition of a four-photon state with two different origins. The emergence of multi-photon frustrated interference is due to the quantum indistinguishability by path identity. The quantum state is created on a silicon photonic chip using four probabilistic photon-pair sources, and the distributed four photons can be fully controlled by tuning phases.
Article
Optics
Li-cheng Wang, Yang Chen, Zhen-nan Tian, Ying-de Wang, Xi-feng Ren, Qi-dai Chen
Summary: This letter investigates the influence of next-nearest-neighbor interactions on the topological properties of the SSH model. The experimental observations of delocalization transition of light in SSH lattices with nontrivial phase are in good agreement with theoretical predictions.
Article
Optics
Yunkun Wu, Yutao Tang, Zixian Hu, Lantian Feng, Guangcan Guo, Xifeng Ren, Guixin Li
Summary: Optical spin-orbit interaction (SOI), which simultaneously controls the spin and orbital angular momentum of light, is important for classical and quantum information applications. While SOI of light has been extensively studied in linear and nonlinear optics, it has not been explored in quantum nonlinear optical processes such as spontaneous parametric downconversion (SPDC). This study demonstrates that optical SOI in the SPDC process can be achieved through a nonlinear crystal with threefold rotational symmetry, enabling the generation and control of two-photon quantum states with controlled angular momentum.
Article
Optics
Lan-Tian Feng, Yu-Jie Cheng, Xiao-Zhuo Qi, Zhi-Yuan Zhou, Ming Zhang, Dao-Xin Dai, Guang-Can Guo, Xi-Feng Ren
Summary: This study investigates the spontaneous four-wave mixing effect in cryogenically-operated silicon waveguides and demonstrates its effectiveness in generating quantum photonic sources. The generated cryogenic photon-pair source is verified over multiple frequency channels within a bandwidth of approximately 2 THz and is utilized to generate high-quality frequency-multiplexed energy-time entangled states. This work advances the development of cryogenic nonlinear photonics and scalable integrated photonics for quantum information processing.
Article
Optics
Shang-Yu Ren, Wei-Qiang Wang, Yu-Jie Cheng, Long Huang, Bing-Zheng Du, Wei Zhao, Guang-Can Guo, Lan-Tian Feng, Wen-Fu Zhang, Xi-Feng Ren
Summary: Dense quantum entanglement distribution is essential for practical quantum communication, quantum networks, and distributed quantum computation. In this study, we integrated a dense wavelength-division demultiplexing system and unbalanced Mach-Zehnder interferometers on a large-scale photonic chip to achieve multi-channel wavelength multiplexing entanglement distribution among distributed photonic chips. Our work demonstrates the feasibility and effectiveness of this integrated system and provides a path for practical applications of entanglement-based quantum key distribution and quantum networks.
