A5045939148- Plasmonic and Surface Plasmon Research
- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Quantum optics and atomic interactions
- Diamond and Carbon-based Materials Research
- Graphene research and applications
- Advanced Fiber Optic Sensors
- Quantum Information and Cryptography
- Optical Network Technologies
- Mechanical and Optical Resonators
- Advanced Fiber Laser Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum and electron transport phenomena
- Gold and Silver Nanoparticles Synthesis and Applications
- Orbital Angular Momentum in Optics
- Photonic Crystals and Applications
- Thermal Radiation and Cooling Technologies
- Advanced Fluorescence Microscopy Techniques
- Quantum Electrodynamics and Casimir Effect
- Semiconductor materials and devices
- Strong Light-Matter Interactions
- Quantum Mechanics and Applications
- Semiconductor Lasers and Optical Devices
- Terahertz technology and applications
- Random lasers and scattering media
Shanghai University
2019-2024
Yangtze University
2024
University of Science and Technology of China
2022-2023
South China Normal University
2023
Xidian University
2018-2022
Texas A&M University
2014-2021
Zhejiang Sci-Tech University
2014-2021
Chengdu University of Technology
2020
Huazhong University of Science and Technology
2019
Institute of Atmospheric Physics
2018
Optically addressable spin defects in wide-band-gap semiconductors as promising systems for quantum information and sensing applications have recently attracted increased attention. Spin two-dimensional materials are expected to show superiority due their atomic thickness. Here, we demonstrate that an ensemble of negatively charged boron vacancies (VB–) with good properties hexagonal nitride (hBN) can be generated by ion implantation. We carry out optically detected magnetic resonance...
We study the dynamics of a single-photon pulse traveling through linear atomic chain coupled to one-dimensional (1D) single mode photonic waveguide. derive time-dependent dynamical theory for this collective many-body system which allows us real time evolution photon transport and excitations. Our analytical result is consistent with previous numerical calculations when there only one atom. For an chain, interaction between atoms mediated by waveguide can significantly change system. The...
The waveguide quantum electrodynamics (QED) system may have important applications in device and information technology. In this article we review the methods being proposed to calculate photon transport a one-dimensional (1D) coupled emitters. We first introduce Bethe ansatz approach input–output formalism stationary results of single transport. Then present dynamical time-dependent theory real-time evolution QED system. longtime limit, both calculation give same results. Finally, also...
Abstract Quantum technology grown out of quantum information theory, including communication, computation and sensing, not only provides powerful research tools for numerous fields, but also is expected to go civilian use in the future. Solid-state spin-active defects are one promising platforms technology, host materials include three-dimensional diamond silicon carbide, emerging two-dimensional hexagonal boron nitride (hBN) transition-metal dichalcogenides. In this review, we will focus on...
Hexagonal boron nitride (hBN) is a remarkable two-dimensional (2D) material that hosts solid-state spins and has great potential to be used in quantum information applications, including networks. However, this application, both the optical spin properties are crucial for single but have not yet been discovered simultaneously hBN spins. Here, we realize an efficient method arraying isolating defects of use discover new defect with high probability 85%. This exhibits outstanding optically...
Optically addressable spins in two-dimensional hexagonal boron nitride (hBN) attract widespread attention for their potential advantages on-chip quantum devices, such as sensors and networks. A variety of spin defects have been found hBN, but no convenient deterministic generation methods reported other except the negatively charged vacancy (VB−). Here we report that by using femtosecond laser direct writing technology, can deterministically create defect ensembles with spectral range from...
The Goos-Hänchen (GH) shift of light beam incident on graphene ribbon array is investigated by Green's function method. Due to the resonance effects leaky surface plasmons ribbons, zeroth-order reflection field shows both giant positive and negative GH shifts. By tuning Fermi level, we can control conveniently. This effect important graphene-based metasurface electro-optical devices.
Using graphene plasmons (GPs), we can realize a nanometer-scale microscopy. Our scheme takes advantage of the extremely large wave number GPs and low loss graphene. Comparing with conventional nonlinear structured-illumination microscopy based on high-order nonlinearity associated high intensity light, our proposal only requires linear response. Consequently need very weak field, which means less damage to sample may play significantly important role in imaging biological systems.
The strain measurement of a 1.65-m reinforced concrete beam by use distributed fiber sensor with 50-cm spatial resolution and 5-cm readout is reported. strain-measurement accuracy +/-15 microepsilon (microm/m) according to the system calibration in laboratory environment non-uniform-distributed +/-5 uniform distribution. distribution has been measured for one-point two-point loading patterns optical fibers embedded pultruded glass polymer (GFRP) rods those bonded steel reinforcing bars. In...
In the conveying process of a solid–liquid two-phase medium, wear flow passage components is unavoidable. this study, in centrifugal pump was numerically simulated by computational fluid dynamics–discrete element method coupling. For particle diameters up to 3 mm, particle–particle and particle–wall interactions were considered simulation. Two-phase performance experiments for different rates concentrations conducted. The experiment carried out 48 h at each mass concentration. these...
We propose a realization of quantum heat engine in hybrid microwave-optomechanical system that is the analog classical straight-twin engine. It exploits pair polariton modes operate as out-of-phase Otto cycles. A third mode essential coupling optical and microwave fields maintained quasi-dark to suppress disturbances from mechanical noise. also find fluctuations contributions total work two are characterized by correlations generally lead reduction extractable compared its version.
Electrowetting-on-dielectric (EWOD) technology has been considered as a promising candidate for digital microfluidic (DMF) applications due to its outstanding flexibility and integrability. The dielectric layer with hydrophobic surface is the key element of an EWOD device, determining driving voltage, reliability, lifetime. Hereby, inspired by ionic-liquid-filled structuring polymer high capacitance independent on thickness, namely ion gel (IG), we develop (P)-ion gel-amorphous...
The spontaneous decay and quantum interference of a $\mathsf{V}$-type Zeeman atom placed near $\ensuremath{\mu}$-negative metamaterial (MNG) slab are investigated. Based on the fact that MNG supports only TE-polarized surface-plasmon polariton (SPP) modes, rate dipole component parallel to interface would be much larger than normal interface, because one can couple while another decouple TE modes. Consequently, high-level anisotropic environment is created two dipoles interfere with each...
Tunable surface plasmons on the interface of a multilevel atomic medium with cross coupling electric and magnetic components plasmonic field are investigated. The strong chirality resulting from quantum coherence leads to some exciting properties plasmons. Compared traditional chiral-metal interface, mode can still be found at between such media dielectric even when both permittivity permeability positive. This is in contrast conventional systems where signs permittivities or permeabilities...
The dielectric cylinder covered with graphene (DCCG) is found to be a promising platform for studying multi-qubit collective effects. plasmons supported by DCCG have huge wave numbers and low loss. Under some conditions, the zeroth- first-order modes even same wavelength. Qubits along can interact each other strongly coupling within tens hundreds of plasmonic wavelengths. Additionally, electro-optical tunability means that we manipulate wavelength subsequently dynamic evolutions qubits...
The Chinese space station is designed to carry out manned spaceflight, science research, and so on. In serious applications, it a common operation inject gas into the hull, which can produce strain of bulkhead. Accurate measurement for bulkhead one key tasks in evaluating health condition station. This first work perform detection by using optical fiber Bragg grating. period measurements, resistance gauge used as standard. error sensor circumferential direction very small, being less than...
A random fiber laser with regulated Q-switched pulses has been proposed and realized through a half-open cavity, which is formed between compound fiber-based optic ring resonator (ORR) segment of 500 m dispersion compensation (DCF). The ORR provides frequency filtered feedback, together Brillouin scattering the DCF forms mechanism. As result, are generated randomly. Nevertheless, each event typically consists several ordered sub-pulses same pulse interval thanks to resonant interferences...
Abstract Focusing on the realization of multiple-detection-point sensors in mid-infrared band, a dynamically tunable high-sensitive index refraction sensor based graphene and black phosphorus (BP) composite metamaterial is proposed. By adjusting height grating, strength structural plasmon-induced absorption (PIA) can be enhanced within certain range. The energy transfer mechanism system analyzed by coupled mode theory (CMT), theoretical data CMT fit well with FDTD simulation results, which...
A linearly polarized tunable cw dye laser was used to excite ${\mathrm{K}}_{2}$ from the ground $X^{1}\ensuremath{\Sigma}_{\mathrm{g}}^{+}$ state into continuum of $B^{1}\ensuremath{\Pi}_{\mathrm{u}}$ state. Resulting photodissociation produces excited atomic $\mathrm{K}(^{2}P_{\frac{3}{2}})$ which radiates on ${D}_{2}$ line. As is tuned through molecular bound-free absorption profile, we have observed a large variation in polarization fluorescence ranging plus 15%...
The spontaneous emission properties of a two-level emitter embedded in negative permeability slab near the interface between and permittivity are investigated. When impedances two slabs matched dissipation material is small, structure forms very good single-mode cavity for surface plasmons. extremely high local density states plasmons results ultrastrong coupling atom plasmons, then large vacuum Rabi frequency. A damped oscillation occurs dynamic evolution excited close to interface. atomic...
A novel broadband light source based on supercontinuum (SC) generation seeded by random distributed feedback fiber laser (RFL) is proposed and demonstrated for the first time. half-opened cavity formed FBG TrueWave used to generate lasing SC simultaneously. Experimental results indicate that RFL can be as an effective pump of SC. with 20-dB bandwidth >250 nm was obtained. Such a may pave way high power RFLs use in optical sensing measurement.
The spontaneous emission of a V-type three-level quantum emitter near graphene layers is investigated. With appropriate doping densities, support transverse electric- (TE-) polarized surface plasmons. This kind plasmon can enhance the decay rates dipoles parallel to layers, and subsequently, strong interference presents between two orthogonal transition emitter. As result, field polarization spectrum be radically changed. evidence TE-polarized plasmons in layers.