A5013617337- Random lasers and scattering media
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Climate variability and models
- Advanced Optical Imaging Technologies
- Orbital Angular Momentum in Optics
- Digital Holography and Microscopy
- Laser-Matter Interactions and Applications
- Hydrology and Watershed Management Studies
- Strong Light-Matter Interactions
- Quantum Mechanics and Applications
- Meteorological Phenomena and Simulations
- Atomic and Subatomic Physics Research
- Plant Water Relations and Carbon Dynamics
- Terahertz technology and applications
- Hydrology and Drought Analysis
- Advanced Fiber Laser Technologies
- Advanced X-ray Imaging Techniques
- Image and Video Quality Assessment
- Quantum Computing Algorithms and Architecture
- Land Use and Ecosystem Services
- Laser-Plasma Interactions and Diagnostics
- Health disparities and outcomes
- Climate change impacts on agriculture
University of Chinese Academy of Sciences
2014-2024
South China University of Technology
2011-2024
Nanjing University of Information Science and Technology
2017-2024
Daqing Oilfield General Hospital
2024
First Affiliated Hospital of Guangzhou Medical University
2024
Guangzhou Medical University
2024
Hangzhou City University
2023
City University
2023
Xi'an Jiaotong University
2023
Chinese Academy of Sciences
2004-2022
Entangled-photon coincidence imaging is a method to nonlocally image an object by transmitting pair of entangled photons through the and reference optical system, respectively. The can be extracted from rate these two photons. From classical perspective, proportional fourth-order correlation function wave field. Using statistical optics, we study particular aspect with incoherent sources. As application, give proposal realize lensless Fourier-transform imaging, discuss its applicability in...
Ghost imaging through turbulent atmospheres are theoretically studied. Based on the extended Huygens-Fresnel integral, we obtain an analytical formula. The ghost image can be viewed as convolution of original object and a point-spread function (PSF). quality is determined by size PSF. Increasing turbulence strength propagation distance, or decreasing source size, will increase PSF, lead to degradation quality.
We propose an experimental scheme to create spin-orbit coupling in spin-3 Cr atoms using Raman processes. By employing the linear Zeeman effect and optical Stark shift, two spin states within ground electronic manifold are selected, which results a pseudospin-$1/2$ model. further study state structures of spin-orbit-coupled condensate. show that, addition stripe induced by coupling, magnetic dipole-dipole interaction gives rise vortex phase, spontaneous is formed.
The Fourier-transform ghost imaging of both amplitude-only and pure-phase objects was experimentally observed with classical incoherent light at Fresnel distance by a lensless scheme. experimental results are in good agreement the standard Fourier transform corresponding objects. This scheme provides route toward aberration-free diffraction-limited three-dimensional images classically thermal (or neutrons), which have no resolution depth-of-field limitations lens-based tomographic systems.
We propose a novel scheme to generate the spin-orbit coupling for condensate placed inside an optical cavity by using standing wave and traveling wave. It is shown that interplay of laser lights gives rise rich quantum phases. Our also generates large synthetic magnetic field dressed spin state, which may facilitate study Hall effect in ultracold atomic gases.
Gridded distribution of future economy plays an important role in climate change impact assessment. The trend the output values different industries is crucial for a variety planning and design processes. Under Shared Socioeconomic Pathways (SSPs) global framework, multidimensional model Cobb-Douglas production with localized population economic parameters are used to develop annual provincial value-added primary, secondary tertiary China from 2020 2100. most recently implemented...
Abstract Land-use change is a direct driver of biodiversity loss, projection and future land use often consider topical issue in response to climate change. Yet few studies have projected land-use changes over Africa, owing large uncertainties. We project transfer under for three specified time periods: 2021–2040, 2041–2060, 2081–2100, compares the performance various scenarios using observational data year 2020 seven Shared Socioeconomic Pathways Scenarios (SSP): SSP1-1.9, SSP1-2.6,...
A unified theory is developed to investigate both thermal ghost imaging and diffraction through turbulent atmosphere. very simple analytical formula derived contains several previously known results as particular cases. Numerical examples are given show the effects of turbulence strength, source parameters, detector size on quality diffraction. Specifically, we find more robust against than comparison with a conventional lens system advantages or disadvantages
We show that the image quality of ghost imaging (GI) can be controlled by use shaped incoherent sources. The formula for point-spread function in GI system has been derived and is determined Fourier transform source intensity distribution. Compared with widely used Gaussian Schell-model source, we find using a cosine-Gaussian lead to degradation quality, while increased cosh-Gaussian source. Even under atmospheric turbulence, resolution still improved means
Quantum metrology allows the enhanced precision on estimating phase shifts in an optical interferometer to reach $\ensuremath{\propto}1/N$ scaling of ($N$ is mean photon number light field). But when $N$ very large, nonlinear effects may be nonnegligible. Here we investigate theoretically quantum uncertainty bounds for simultaneously detecting linear and shifts. Focusing our attentions only Kerr shifts, find NOON states can not used measure two parameters. Using entangled coherent states,...
We show that the use of a generalized atom-molecule dark state permits enhanced coherent creation triatomic molecules in repulsive atomic Bose-Einstein condensate, with further enhancement being possible case heteronuclear trimers via constructive interference between two chemical reaction channels.
Transfer functions are of fundamental importance in analyzing the image formation optical imaging systems. For recently proposed lensless ghost-imaging systems, when a pointlike or bucket detector is used measurement, corresponding amplitude transfer derived. Defocusing effects also investigated. With help these functions, we can quantitatively study ability
Abstract Accurate estimates and partition of evapotranspiration (ET) are difficult but critical for understanding terrestrial ecosystem processes primary productivity. A multi‐year, multi‐technique study including the catchment water balance (12 years), a semi‐empirical ET model (9 eddy covariance canopy (1 year) sap flow techniques was conducted to measure its components within an intact forested watershed in subtropical region southern China. Over 9‐year period, annual using balance, were...