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
Chemistry, Multidisciplinary
Da-Jie Yang, Ji-Cai Liu
Summary: In this study, efficient and selective high-order resonances were demonstrated in symmetric and asymmetric plasmonic nanoparticles using vortex beams. A pure high-order resonance was observed in symmetric nanoparticles configured with a complete nanoring lying on the focal center. Asymmetric nanoparticles configured with a complete ring off the beam center or a splitting nanoring showed multiple resonances influenced by the ring's geometry, position, orientation, and photon OAM. These findings contribute to the understanding and control of OAM-involved light-material interactions in asymmetric nanosystems.
Article
Optics
Yanan Fu, Yulong Wang, Yuquan Zhang, Yejun He, Changjun Min, Xiaocong Yuan
Summary: In recent years, singular optical beams have brought new degrees of freedom for many applications. This study proposes a new method for the detection of polarization singularities in optical beams using a designed on-chip plasmonic spin-Hall metalens structure. The results demonstrate the potential of this method in compact integrated optical communication and processing systems.
Article
Optics
Jingying Miao, Shencheng Fu, Xin Li, Hongfang Liu, Xintong Zhang, Haiyang Xu, Yichun Liu
Summary: Holography is used as a feasible method for information encryption, and a serial coding system based on a plasmonic holographic disk utilizing the spin and orbital angular momenta of photons is designed. The accurate distinction of the polarization state and topological charge of the vortex light field enables stable readout of the encrypted holographic grating array.
Article
Optics
Xiang-Yu Zeng, Yu-Qin Zhang, Rui-Rui Zhang, Xiao-Rong Ren, Zi-Jun Zhan, Man-Na Gu, Rui Sun, Chun-Xiang Liu, Chuan-Fu Cheng
Summary: Metasurfaces with orthogonal nano-slit pairs arranged on spirals are proposed to generate vector beams of Bell-like states and slanted polarizations. The design is based on the theoretically derived parameter condition for manipulation of the two vector vortex modes, satisfied by matching the rotation order m, the spiral order n, and incident polarization helicity sigma. Linear polarization states of the vector beams are controlled by the initial orientation angle of slit pairs.
Article
Physics, Applied
Qiao Jiang, Hong Xiang, Dezhuan Han
Summary: This study proposes a method to design a plasmonic metasurface that can control the generation and superposition of surface plasmon polariton (SPP) vortices, demonstrating that the superposition of SPP vortices can be accurately controlled by the polarization states of the incidence, providing a feasible way to design miniaturized photonic devices.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Eva Prinz, Grisha Spektor, Michael Hartelt, Anna-Katharina Mahro, Martin Aeschlimann, Meir Orenstein
Summary: By tailoring the local and global geometries of vortex generators, arbitrary switching in the delivered plasmonic angular momentum can be achieved, providing a new method for plasmonic manipulation. The precise control over the generation and rotation direction of high-order plasmonic vortices was demonstrated, as well as the capability to create complex topological fields.
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
Optics
Zijun Peng, Qing Wang, Hongshan Chen, Hongyu Liu, Xin Liu, Lison Yan, Jinwei Zhang
Summary: We have successfully generated high-order transverse modes from a Kerr-lens mode-locked femtosecond laser by non-collinear pumping. The generated modes were converted into Laguerre-Gaussian vortex modes using a cylindrical lens mode converter. This work demonstrates the potential of developing Kerr-lens mode-locked bulk lasers with various pure high-order modes and opens up possibilities for generating ultrashort vortex beams.
News Item
Optics
Philippe St-Jean
Summary: This paper presents a novel solid-state laser that can generate a large array of phase-locked optical vortices with tunable orbital angular momentum.
News Item
Optics
Spencer W. Jolly
Summary: A diffractive axicon can create intricate connections between topological charges and frequencies of ultrashort laser pulses, resulting in a diverse range of coiled light structures.
Article
Optics
M. Vinny Cris, Vanitha Patnala, Salla Gangi Reddy, Cleberson R. Alves
Summary: In recent years, many researchers have been interested in finding elements that help in calculating the orbital angular momentum (OAM) of perturbed vortex beams after propagating through turbulence. In this work, we realized a method that utilizes the area of spatial auto-correlation function of scattered optical vortices for finding the topological charge. We have also established an analogy between the area of the intensity auto-correlation profile of the partially coherent vortices and the radii of the related coherent ring-shaped vortex beam transverse profiles which helps us finding the topological charge in a simpler way.
APPLIED PHYSICS B-LASERS AND OPTICS
(2023)
Article
Physics, Applied
G. Ruffato, E. Rotunno, L. M. C. Giberti, V Grillo
Summary: This paper proves that any conformal transformation of a wave can be produced through a cascade of discrete phase elements satisfying Laplace's equation, with the specific implication for charged-matter waves being the use of electrostatic or magnetostatic phase elements. Additionally, the basis for generating such phase elements is shown to be integer and fractional charge multipoles, allowing for efficient sorting of multipole-induced quantum states. The results hold true in optics and for charged-particle beams of sufficient coherence, providing a fast and direct method for measuring dipole systems and astigmatism.
PHYSICAL REVIEW APPLIED
(2021)
Article
Optics
Kayn A. Forbes, Garth A. Jones
Summary: Circular dichroism refers to the differential rate of absorption of right- and left-handed circularly polarized light by chiral particles. Chiral particles, whether oriented or randomly oriented, absorb photons from twisted beams at different rates depending on the direction of the vortex twist.
Article
Physics, Multidisciplinary
Yangyang Fu, Yuan Tian, Xiao Li, Shili Yang, Youwen Liu, Yadong Xu, Minghui Lu
Summary: In this study, a new method for achieving robust asymmetric generation of acoustic vortex field through dual-layer metasurfaces is introduced. This is achieved by controlling the intrinsic topologic charges and the parity of geometry design. The underlying physics is contributed to the one-way process of orbital angular momentum transition ensured by the broken spatial symmetry and the external topologic charge from the vortex diffraction. The novel phenomenon is experimentally demonstrated, providing new routes to manipulate the asymmetric response of vortex fields and potential applications in passive OAM-based diodes.
PHYSICAL REVIEW LETTERS
(2022)
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
Shengyuan Lu, Ayan Nussupbekov, Xiao Xiong, Wen Jun Ding, Ching Eng Png, Zi-En Ooi, Jing Hua Teng, Liang Jie Wong, Yidong Chong, Lin Wu
Summary: This article proposes a compact design for generating terahertz Smith-Purcell (SP) radiation using mobile charge carriers within 2D materials, eliminating the need for bulky accelerators. By optimizing the distance between charge carriers and a grating, the optimal electron velocity and maximum radiation intensity can be predicted. This study can be extended to a wide variety of charge carriers in 2D materials, enabling compact, tunable, and low-cost terahertz sources.
LASER & PHOTONICS REVIEWS
(2023)
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.
Article
Optics
Shui-Jing Tang, Mingjie Zhang, Jialve Sun, Jia-Wei Meng, Xiao Xiong, Qihuang Gong, Dayong Jin, Qi-Fan Yang, Yun-Feng Xiao
Summary: Researchers demonstrate real-time measurement of natural vibrations of single mesoscopic particles using photoacoustic excitation and acoustic coupling to an optical microresonator for readout. This technology extends the reach of vibrational spectroscopy and is applied for biomechanical fingerprinting of microorganisms at the single-cell level.
Article
Optics
Zhi-Yan Wang, Xiao Xiong, Jin-Yu Liu, Qihuang Gong, Yun-Feng Xiao, Qi-Tao Cao
Summary: This study investigates the nonlinear strong coupling dynamics of second harmonic generation in an optical microresonator, revealing phenomena such as intensity-dependent Rabi oscillation and clamped maximum SHG conversion efficiency. Additionally, multiple nonlinear strong coupling physics phenomena are observed, including bistability, period-doubling bifurcation, and chaos. The study also identifies pseudoHermitian degeneracy, which enhances SHG efficiency through synchronized resonances. This work is important for the implementation of high-efficiency photonic devices and enriching the understanding of nonlinear dynamics and non-Hermitian physics in optical microresonators.
