A5050094353- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Optical Network Technologies
- Perovskite Materials and Applications
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Liquid Crystal Research Advancements
- Conducting polymers and applications
- Quasicrystal Structures and Properties
- Organic Light-Emitting Diodes Research
- Advanced Fiber Laser Technologies
- Atmospheric chemistry and aerosols
- Advanced Photocatalysis Techniques
- 2D Materials and Applications
- Transition Metal Oxide Nanomaterials
- Semiconductor Quantum Structures and Devices
- Solid State Laser Technologies
- TiO2 Photocatalysis and Solar Cells
- Metamaterials and Metasurfaces Applications
- Optical Wireless Communication Technologies
- Quantum optics and atomic interactions
- Advanced Algorithms and Applications
- Nanomaterials for catalytic reactions
- Catalytic Processes in Materials Science
- Advanced Nanomaterials in Catalysis
Collaborative Innovation Center of Quantum Matter
2019-2025
Peking University
2019-2025
Beijing Academy of Quantum Information Sciences
2021-2024
Electric Power University
2021
Northeast Electric Power University
2021
Minzu University of China
2018-2020
Xiangtan University
2019
Pingxiang University
2018
Gannan Normal University
2015-2016
Single-crystal perovskites with excellent photophysical properties are considered to be ideal materials for optoelectronic devices, such as lasers, light-emitting diodes and photodetectors. However, the growth of large-scale perovskite single-crystal films (SCFs) high optical gain by vapor-phase epitaxy remains challenging. Herein, we demonstrated a facile method fabricate thin CsPbBr3 SCFs (∼300 nm) on c-plane sapphire substrate. High temperature is found key parameter control low reactant...
Photonic neural networks benefit from the use of photons to perform intelligent inference computing with ultrafast and ultralow energy consumption in ultra-high-throughput, providing efficient photonic hardware for new generation computing, effective way support large-scale integration on-chip all-optical chips. With rapid development networks, demands computation power have increased dramatically. However, weak impractical optical nonlinear activations, lack suitable configurations...
The on-chip integrated visible microlaser is a core unit of high-speed visible-light communication with huge bandwidth resources, which needs robustness against fabrication errors, compressible linewidth, reducible threshold, and in-plane emission. However, until now, it has been great challenge to meet these requirements simultaneously. Here, we report scalable strategy realize robust further improved lasing performances enabled by the increased orders (n) exceptional surfaces,...
Abstract Hybrid organic–inorganic perovskite (HOP) spintronics aims to make full use of the properties electron spin. HOP has recently emerged as a promising field research because it provides new precisely manipulable degree freedom. The flourishing development activity in this benefited from unique intrinsic spin‐related optoelectronic HOPs, which include triplet formation, large Stark effect, magneto‐optical polarized light‐related effects, and complex light emission characteristics,...
Optical neural networks (ONNs) herald a new era in information and communication technologies have implemented various intelligent applications. In an ONN, the activation function (AF) is crucial component determining network performances on-chip AF devices are still development. Here, we first demonstrate reconfigurable with phase fulfilled by dual-functional graphene/silicon (Gra/Si) heterojunctions. With optical modulation detection one device, time delays shorter, energy consumption...
Realizing a multifunctional integrated photonic platform is one of the goals for future optical information processing, which usually requires large size to realize due multiple integration challenges. Here, we with ultracompact footprint based on inverse design. The compact 86 designed-fixed couplers and 91 phase shifters. each coupler 4 μm by 2 μm, while whole 3 mm 0.2 mm-one order magnitude smaller than previous designs. One-dimensional Floquet Su-Schrieffer-Heeger model...
Photonic molecules (PMs) are artificial nanoscale photonic structures that play important roles in the fundamental optics field. PM quantum has recently become a promising research field, because it provides novel optical phenomena including Rabi oscillation, Stark effect, Purcell photon blockade bound states continuum, electromagnetically induced transparency, and Autler–Townes splitting. With constant improvements theoretical research, many newly integrated devices have been proposed...
The rapid development of information technology has fueled an ever-increasing demand for ultrafast and ultralow-energy-consumption computing. Existing computing instruments are pre-dominantly electronic processors, which use electrons as carriers possess von Neumann architecture featured by physical separation storage processing. scaling speed is limited not only data transfer between memory processing units, but also RC delay associated with integrated circuits. Moreover, excessive heating...
Abstract Optical logic operations are an essential part of optical computing. The inherent stability and low susceptibility polarization to the external environment make it a suitable choice for acting as logical state in computational tasks. Traditional polarization-based devices often rely on complex cascading structures implement multiple gates. In this work, by leveraging framework deep diffractive neural networks (D 2 NN), we proposed uniform approach designing polarization-encoded...
We have researched a U-shape structure that consists of three vertical cavities coupled with bus wave-guide. The theoretical results based on the mode theory are consistent simulation results. demonstrate interaction among two bright and one dark modes lead to dual plasmon induced transparency. Meanwhile, it is found lateral displacement S plays an important role in transmission property, dip different transmittance various has been explained theoretically. Moreover, nano sensor sensitivity...
Abstract Wave shaping plays an important role in on‐chip signal processing. However, previously reported photonics elements exhibit limited control capabilities or require complex nanofabrication techniques. Here, metadevice is proposed for multiport beam splitting based on a 1D slots array the silicon‐on‐insulator platform, which has advantages of high efficiency, full 2π phase shift, and easy design scheme. The experimentally demonstrated at 1550 nm, shows different numbers splits. This...
A single slot cavity coupled with two waveguides has been researched in theory and simulation. The results comparison between simulation shows they agree well. It is found that the lateral displacement S plays an important role transmission properties. Moreover, increasing width of emergence new resonant peaks. At same time, shift peaks have explained Kerr nonlinear material can act as a dynamically tunable four channel switch filter. advantages simple compact structure, easy fabrication,...
We report a scalable strategy to realize robust on-chip integrated microlaser source with simultaneous in-plane emission, linewidth compression, and pump energy utilization improvement based on different orders of exceptional surfaces (ESs).
Dual-functional graphene/silicon heterojunctions in microring resonators enabled highly reconfigurable optical activation function devices with phase activation. Special nonlinear functions are fed into a complex-valued ONN to challenge image recognition tasks, showing improved results.
Abstract The rapid development of information technology has fueled an ever-increasing demand for ultrafast and ultralow-energy-consumption computing. Existing computing instruments are pre-dominantly electronic processors. scaling speed is limited not only by data transfer between memory processing units, but also RC delay associated with integrated circuits. Using photons as carriers a promising alternative. Here, we report strategy to realize all-optical based on convolutional neural...
Combined template method with sol-gel to make the mixed solution including polystyrene microsphere emulsion, TiO2 sol and NH3·H2O aging at room temperature. Annealing 500 centigrade for 2 hours on mesoporous nano material doped nitrogen. Wrapped Ag nanoparticles surface of through redox reaction. The morphology optical porosities were characterized by Scanning electron microscope (SEM), X-ray diffraction (XRD), BET tester Surface enhanced Raman scattering (SERS). results showed this has...
The magnetic control adjustable characteristics of one-dimensional Thue-Morse quasiperiodic structure with nanoparticle fluid defect local modes are studied by using the transfer matrix method.First, physical model photonic crystal is built.Then, transmission spectrum calculated method.Finally, discussed.The results show that wavelength shift to long-wave direction refractive index increasing; drift variation increases as level at different increase; quality factor decreases increase for same level.
The magnetic control tunable characteristics of localized modes One-dimensional Cantor quasicrystal structure containing nanoparticle fluid is studied by using the transfer matrix method.First, physical model built.Then, transmission spectrum quasicrystals calculated method.Finally, are discussed.The results show that generation increased, number increased as well; wavelength shift to long-wave direction with refractive index increasing; higher generation, quality factor split modes; drift...
As an emerging research area, hybrid organic–inorganic perovskite (HOP) spintronics has been developing quickly in latest years and shown tremendous potential for applications integrated optoelectronic devices. Xiaoyong Hu co-workers (article number 1900350) highlight recent progress the basic realization mechanisms, novel spin-generated physical effects, diversified structure of HOP systems, devices, status as well challenges this field. The cover depicts spin-polarized photoluminescence...
Due to the shortcomings of acoustic feature parameters in speech signals, and limitations existing features characterizing integrity information, This paper proposes a method for recognition combining cochlear random forest. Environmental noise can pose threat stable operation current systems. It is therefore essential develop robust systems that are able identify under low signal-to-noise ratio. In this paper, we propose spectral subtraction, auditory energy extraction. first extract novel...