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Results for "Yu Guang Wang"

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Tight framelets and fast framelet transforms on manifoldsAug 13 2016Tight framelets on a smooth and compact Riemannian manifold $\mathcal{M}$ provide a tool of multiresolution analysis for data from geosciences, astrophysics, medical sciences, etc. This work investigates the construction, characterizations, and applications ... More
Analysis of Framelet Transforms on a SimplexJan 06 2017Sep 14 2017In this paper, we construct framelets associated with a sequence of quadrature rules on the simplex $T^{2}$ in $\mathbb{R}^{2}$. We give the framelet transforms -- decomposition and reconstruction of the coefficients for framelets of a function on $T^{2}$. ... More
Tight framelets and fast framelet filter bank transforms on manifoldsAug 13 2016Mar 01 2018Tight framelets on a smooth and compact Riemannian manifold $\mathcal{M}$ provide a tool of multiresolution analysis for data from geosciences, astrophysics, medical sciences, etc. This work investigates the construction, characterizations, and applications ... More
Structural Stability of Supersonic Contact Discontinuities in Three-Dimensional Compressible Steady FlowsJul 06 2014In this paper, we study the structurally nonlinear stability of supersonic contact discontinuities in three-dimensional compressible isentropic steady flows. Based on the weakly linear stability result and the $L^2$-estimates obtained by the authors in ... More
Nonlinear Optical Properties of Transition Metal Dichalcogenide MX$_2$ (M = Mo, W; X = S, Se) Monolayers and Trilayers from First-principles CalculationsSep 03 2014Dec 02 2014Due to the absence of interlayer coupling and inversion symmetry, transition metal dichalcogenide (MX$_2$) semiconductor monolayers exhibit novel properties that are distinctly different from their bulk crystals such as direct optical band gaps, large ... More
Large anomalous Nernst and spin Nernst effects in noncollinear antiferromagnets Mn$_3X$ ($X$ = Sn, Ge, Ga)Aug 20 2017Dec 10 2017Noncollinear antiferromagnets have recently been attracting considerable interest partly due to recent surprising discoveries of the anomalous Hall effect (AHE) in them and partly because they have promising applications in antiferromagnetic spintronics. ... More
Band topology in classical waves: Wilson-loop approach to topological numbers and fragile topologyFeb 27 2019Apr 22 2019The rapid development of topological photonics and acoustics calls for accurate understanding of band topology in classical waves, which is not yet achieved in many situations. Here, we present the Wilson-loop approach for exact numerical calculation ... More
Haar Transforms for Graph Neural NetworksJul 10 2019Graph Neural Networks (GNNs) have become a topic of intense research recently due to their powerful capability in high-dimensional classification and regression tasks for graph-structured data. However, as GNNs typically define the graph convolution by ... More
On Approximation for Fractional Stochastic Partial Differential Equations on the SphereJul 31 2017Mar 01 2018This paper gives the exact solution in terms of the Karhunen-Lo\`{e}ve expansion to a fractional stochastic partial differential equation on the unit sphere $\mathbb{S}^{2}\subset \mathbb{R}^{3}$ with fractional Brownian motion as driving noise and with ... More
Riemann localisation on the sphereOct 23 2015Jul 13 2016This paper first shows that the Riemann localisation property holds for the Fourier-Laplace series partial sum for sufficiently smooth functions on the two-dimensional sphere, but does not hold for spheres of higher dimension. By Riemann localisation ... More
Ultrafast solvation dynamics at internal site of staphylococcal nuclease investigated by site-directed mutagenesisDec 09 2014Solvation is essential for protein activities. To study internal solvation of protein, site-directed mutagenesis is applied. Intrinsic fluorescent probe, tryptophan, is inserted into desired position inside protein molecule for ultrafast spectroscopic ... More
Path-averaged Kinetic Equation for Stochastic SystemsApr 23 2018Mar 25 2019For a stochastic system, its evolution from one state to another can have a large number of possible paths. Non-uniformity in the field of system variables leads the local dynamics in state transition varies considerably from path to path and thus the ... More
Exploring Stereovision-Based 3-D Scene Reconstruction for Augmented RealityFeb 17 2019Three-dimensional (3-D) scene reconstruction is one of the key techniques in Augmented Reality (AR), which is related to the integration of image processing and display systems of complex information. Stereo matching is a computer vision based approach ... More
Revealing A Head-on Major Merger in the Nearby NGC 6338 Group with Chandra and VLA observationsJan 25 2019By analyzing the Chandra archival data of the nearby NGC 6338 galaxy group, we identify two X-ray bright clumps (N-clump and S-clump) within the central 100 kpc, and detect an arc-like X-ray brightness discontinuity at the south boundary of the N-clump, ... More
Needlet approximation for isotropic random fields on the sphereDec 24 2015In this paper we establish a multiscale approximation for random fields on the sphere using spherical needlets --- a class of spherical wavelets. We prove that the semidiscrete needlet decomposition converges in mean and pointwise senses for weakly isotropic ... More
Manipulating Anomalous Hall Antiferromagnets with Magnetic FieldsFeb 08 2018The symmetry considerations that imply a non-zero anomalous Hall effect (AHE) in certain non-collinear antiferromagnets also imply both non-zero orbital magnetization and a net spin magnetization. We have explicitly evaluated the orbital magnetizations ... More
Quantum correlation measure in arbitrary bipartite systemsSep 04 2013Oct 09 2013A definition of quantum correlation is presented for an arbitrary bipartite quantum state based on the skew information. This definition not only inherits the good properties of skew information such as the contractivity and so on, but also is effective ... More
Sparse Isotropic Regularization for Spherical Harmonic Representations of Random Fields on the SphereJan 10 2018This paper discusses sparse isotropic regularization for a random field on the unit sphere $\mathbb{S}^2$ in $\mathbb{R}^{3}$, where the field is expanded in terms of a spherical harmonic basis. A key feature is that the norm used in the regularization ... More
A one-dimensional many-body integrable model from $Z_n$ Belavin model with open boundary conditionsNov 20 1997We use factorized $L$ operator to construct an integrable model with open boundary conditions. By taking trigonometic limit($\tau \to \sqrt{-1}\infty$) and scaling limit($\omega \to 0$), we get a Hamiltonian of a classical integrable system. It shows ... More
${\bar{B}^{0}_{s}}$ and its excited meson production via top quark decays at the LHCJun 23 2015Jan 24 2018In this work we evaluate the masses of the $|(b\bar{s})[n]\rangle$ or $|(\bar{b}s)[n]\rangle$ quarkonium ($\bar{B}^{0}_{s}$ or ${B}^{0}_{s}$ meson) under the B.T. potential, and the values of the Schr${\rm \ddot{o}}$dinger radial wave function at the ... More
Hyperspectral Imaging Technology and Transfer Learning Utilized in Identification Haploid Maize SeedsMay 30 2018It is extremely important to correctly identify the cultivars of maize seeds in the breeding process of maize. In this paper, the transfer learning as a method of deep learning is adopted to establish a model by combining with the hyperspectral imaging ... More
New Sequences Design from Weil Representation with Low Two-Dimensional Correlation in Both Time and Phase ShiftsDec 24 2008May 13 2011For a given prime $p$, a new construction of families of the complex valued sequences of period $p$ with efficient implementation is given by applying both multiplicative characters and additive characters of finite field $\mathbb{F}_p$. Such a signal ... More
A Note on the Diagonalization of the Discrete Fourier TransformFeb 07 2009Jun 05 2009Following the approach developed by S. Gurevich and R. Hadani, an analytical formula of the canonical basis of the DFT is given for the case $N=p$ where $p$ is a prime number and $p\equiv 1$ (mod 4).
Semiparametric Additive Transformation Model under Current Status DataMay 06 2011We consider the efficient estimation of the semiparametric additive transformation model with current status data. A wide range of survival models and econometric models can be incorporated into this general transformation framework. We apply the B-spline ... More
Quantum phase transition of nonlocal Ising chain with transverse field in a resonatorSep 23 2014We study the quantum phase transition in a spin chain with variable Ising interaction and position-dependent coupling to a resonator field. Such a complicated model, usually not present in natural physical systems, can be simulated by an array of qubits ... More
Dynamic phase transitions of a driven Ising chain in a dissipative cavitySep 08 2016Oct 08 2016We study the nonequilibrium quantum phase transition of an Ising chain in a dissipative cavity driven by an external transverse light field. When driving and dissipation are in balance, the system can reach a nonequilibrium steady state which undergoes ... More
Majorana modes in a triple-terminal Josephson junction with embedded parallel-coupled double quantum dotsJul 26 2015We investigate the Josephson effect in one triple-terminal junction with embedded parallel-coupled double quantum dots. It is found that the inter-superconductor supercurrent has opportunities to oscillate in $4\pi$ period, with the adjustment of the ... More
Longitudinal fluctuations and decorrelations of anisotropic flows in relativistic heavy-ion collisionsJul 13 2018We study the longitudinal decorrelations of elliptic, triangular and quadrangular flows in heavy-ion collisions at the LHC and RHIC energies. The event-by-event CLVisc (3+1)-dimensional hydrodynamics model, combined with the fully fluctuating AMPT initial ... More
Maize Haploid Identification via LSTM-CNN and Hyperspectral Imaging TechnologyMay 23 2018May 24 2018Accurate and fast identification of seed cultivars is crucial to plant breeding, with accelerating breeding of new products and increasing its quality. In our study, the first attempt to design a high-accurate identification model of maize haploid seeds ... More
Excited Heavy Quarkonium Production via Z^0 Decays at a High Luminosity ColliderMay 13 2015Jun 26 2015We present a systematic study of the production of the heavy quarkonium, i.e., $|(c\bar{c})[n] \rangle$ , $|(b\bar{c})[n] \rangle$ (or $|(c\bar{b})[n] \rangle$), and $|(b\bar{b})[n] \rangle$ quarkonium [$|(Q\bar{Q'})[n]\rangle$ quarkonium for short], ... More
Heavy $P$-wave quarkonium production via Higgs decaysJul 29 2018Aug 23 2018The production of the heavy quarkonium, i.e., $|(c\bar{b})[n]\rangle$ (or $|(b\bar{c})[n]\rangle$), $|(c\bar{c})[n]\rangle$, and $|(b\bar{b})[n]\rangle$- quarkonium [$|(Q\bar{Q'})[n]\rangle$-quarkonium for short], through Higgs $H^{0}$ boson semiexclusive ... More
Suppressed Josephson phase transition in one parallel double-quantum-dot junctionNov 10 2017Nov 17 2017With the help of the numerical renormalization group method, we theoretically investigate the Josephson phase transition in a parallel junction with one quantum dot embedded in each arm. It is found that in the cases of uniform dot levels and dot-superconductor ... More
Longitudinal fluctuations and decorrelations of anisotropic flows at the LHC and RHIC energiesMay 10 2018Aug 26 2018We perform a systematic study on the decorrelation of anisotropic flows along the pseudorapidity in relativistic heavy-ion collisions at the LHC and RHIC energies. The dynamical evolution of the QGP fireball is simulated via the CLVisc (ideal) (3+1)-dimensional ... More
Needlet approximation for isotropic random fields on the sphereDec 24 2015Dec 10 2016In this paper we establish a multiscale approximation for random fields on the sphere using spherical needlets --- a class of spherical wavelets. We prove that the semidiscrete needlet decomposition converges in mean and pointwise senses for weakly isotropic ... More
Manipulating Anomalous Hall Antiferromagnets with Magnetic FieldsFeb 08 2018May 14 2019The symmetry considerations that imply a non-zero anomalous Hall effect (AHE) in certain non-collinear antiferromagnets also imply both non-zero orbital magnetization and a net spin magnetization. We have explicitly evaluated the orbital magnetizations ... More
Dynamical Signature of Symmetry Fractionalization in Frustrated MagnetsMar 29 2018Jul 22 2018The nontrivialness of quantum spin liquid (QSL) typically manifests in the non-local observables that signifies their existence, however, this fact actually casts shadow on detecting QSL with experimentally accessible probes. Here, we provide a solution ... More
Enhancement of the thermoelectric effect due to the Majorana zero modes coupled to one quantum-dot systemJan 26 2018By considering Majorana zero modes to laterally couple to the quantum dot, we evaluate the thermoelectric effect in one single-dot system. The calculation results show that if one Majorana zero mode couples to the dot, the thermoelectric effect will exhibit ... More
Fully discrete needlet approximation on the sphereFeb 20 2015Jul 06 2016Spherical needlets are highly localized radial polynomials on the sphere $\mathbb{S}^{d}\subset \mathbb{R}^{d+1}$, $d\ge 2$, with centers at the nodes of a suitable cubature rule. The original semidiscrete spherical needlet approximation of Narcowich, ... More
Dynamic phase transitions of a driven Ising chain in a dissipative cavitySep 08 2016We study the nonequilibrium quantum phase transition of an Ising chain in a dissipative cavity driven by an external transverse light field. When driving and dissipation are in balance, the system can reach a nonequilibrium steady state which undergoes ... More
${\bar{B}^{0}_{s}}$ and its excited meson production via top quark decays at the LHCJun 23 2015Oct 23 2015The masses of the $|(|b\bar{s})[n]\rangle$ quarkonium ($\bar{B}^{0}_{s}$ meson) under the B.T. potential, and the values of the Schr${\rm \ddot{o}}$dinger radial wave function of $|(|b\bar{s})[n]\rangle$ quarkonium at the origin, its first nonvanishing ... More
${\bar{B}^{0}_{s}}$ and its excited meson production via top quark decays at the LHCJun 23 2015Nov 10 2016In this paper, the masses of the $|(|b\bar{s})[n]\rangle$ quarkonium ($\bar{B}^{0}_{s}$ meson) under the B.T. potential, and the values of the Schr${\rm \ddot{o}}$dinger radial wave function of $|(|b\bar{s})[n]\rangle$ quarkonium at the origin, its first ... More
Well-posedness and blowup of the geophysical boundary layer problemMar 17 2019Under the assumption that the initial velocity and outflow velocity are analytic in the horizontal variable, the local well-posedness of the geophysical boundary layer problem is obtained by using energy method in the weighted Chemin-Lerner spaces. Moreover, ... More
Twin-field Quantum Key Distribution without Phase Post-SelectionJul 06 2018Nov 02 2018Twin-field quantum key distribution (TF-QKD) protocol and its variants, e.g. phase-matching (PM) QKD and TF-QKD based on sending or not sending, are highly attractive since they are able to overcome the well-known rate-loss limit for QKD protocols without ... More
Asymptotically exact solution of a local copper-oxide modelMar 16 1994We present an asymptotically exact solution of a local copper-oxide model abstracted from the multi-band models. The phase diagram is obtained through the renormalization-group analysis of the partition function. In the strong coupling regime, we find ... More
Gate-tuned Aharonov-Bohm interference of surface states in a quasi-ballistic Dirac semimetal nanowireJul 17 2017We report an observation of a topologically protected transport of surface carriers in a quasi-ballistic Cd3As2 nanowire.The nanowire is thin enough for the spin-textured surface carriers to form 1D subbands, demonstrating conductance oscillations with ... More
Twin-field Quantum Key Distribution without Phase Post-SelectionJul 06 2018Mar 22 2019Twin-field quantum key distribution (TF-QKD) protocol and its variants, e.g. phase-matching (PM) QKD and TF-QKD based on sending or not sending, are highly attractive since they are able to overcome the well-known rate-loss limit for QKD protocols without ... More
Local quantum critical behavior in magnetic Kondo impurity models with partially screened momentDec 21 2004Mar 24 2005In the strong coupling limit, an effective resonant level model is derived for the spin-1 underscreened Kondo impurity model. A local quantum critical behavior is induced by the formation of a bound state with partially screened magnetic moment, displaying ... More
Tuning linear and nonlinear optical properties of wurtzite GaN by c-axial stressSep 07 2009We study the linear and nonlinear optical properties of wurtzite GaN under c-axial stress field, using density functional theory calculations. The fully structural optimization at each c-axial strain was performed. The calculated dielectric functions ... More
An Efficient Network Intrusion Detection System Based on Feature Selection and Ensemble ClassifierApr 02 2019Since Internet is so popular and prevailing in human life, countering cyber threats, especially attack detection, is a challenging area of research in the field of cyber security. Intrusion detection systems (IDSs) are essential entities in a network ... More
Multiple Lifshitz transitions driven by short-range antiferromagnetic correlations in the two-dimensional Kondo lattice modelOct 21 2011With a mean field approach, the heavy Fermi liquid in the two-dimensional Kondo lattice model is carefully considered in the presence of short-range antiferromagnetic correlations. As the ratio of the local Heisenberg superexchange coupling to the Kondo ... More
A cost-effective shuffling method against DDoS attacks using Moving Target DefenseMar 25 2019Apr 01 2019Moving Target Defense(MTD) has emerged as a good solution to alter the asymmetric situation of attacks and defenses, shuffling-based moving target defense has been regarded as one of the most effective ways to mitigate DDoS attacks. However, previous ... More
Spin and quadruple correlations in the insulating nematic phase of spin-1 bosons on optical latticesJul 07 2005We consider the effective model of $H=-J_{1}\sum_{<i,j>}\mathbf{S}_{i}\cdot \mathbf{S}_{j}-J_{2}\sum_{<i,j>}(\mathbf{S}_{i}\cdot \mathbf{S}_{j}) ^{2}$, describing the Mott insulating phase with odd number of spin-1 bosons in optical lattices ($J_{2}>J_{1}>0$). ... More
Anomalous Resonance of the Symmetric Single-Impurity Anderson Model in the Presence of Pairing FluctuationsOct 05 1998We consider the symmetric single-impurity Anderson model in the presence of pairing fluctuations. In the isotropic limit, the degrees of freedom of the local impurity are separated into hybridizing and non-hybridizing modes. The self-energy for the hybridizing ... More
Two-channel Kondo model as a generalized one-dimensional inverse square long-range Haldane-Shastry spin modelJan 28 2000Majorana fermion representations of the algebra associated with spin, charge, and flavor currents have been used to transform the two-channel Kondo Hamiltonian. Using a path integral formulation, we derive a reduced effective action with long-range impurity ... More
Coexisting Kondo singlet state with antiferromagnetic long-range order: A possible ground state for Kondo insulatorsApr 25 2000Apr 29 2000The ground-state phase diagram of a half-filled anisotropic Kondo lattice model is calculated within a mean-field theory. For small transverse exchange coupling $J_{\perp}<J_{\perp c1}$, the ground state shows an antiferromagnetic long-range order with ... More
Pairing symmetry of heavy fermion superconductivity in the two-dimensional Kondo-Heisenberg lattice modelFeb 14 2016In the two-dimensional Kondo-Heisenberg lattice model away from half-filled, the local antiferromagnetic exchange coupling can provide the pairing mechanism of quasiparticles via the Kondo screening effect, leading to the heavy fermion superconductivity. ... More
Magnonic momentum transfer force on domain walls confined in spaceAug 05 2013Momentum transfer from incoming magnons to a Bloch domain wall is calculated using one dimensional continuum micromagnetic analysis. Due to the confinement of the wall in space, the dispersion relation of magnons is different from that of a single domain. ... More
Weak ferromagnetism with the Kondo screening effect in the Kondo lattice systemsJan 09 2013Apr 11 2013We carefully consider the interplay between ferromagnetism and the Kondo screening effect in the conventional Kondo lattice systems at finite temperatures. Within an effective mean-field theory for small conduction electron densities, a complete phase ... More
Reformulation of Boundary BF Theory Approach to Statistical Explanation of the Entropy of Isolated HorizonsJun 09 2015It is shown in this paper that the symplectic form for the system consisting of $D$-dimensional bulk Palatini gravity and SO$(1,1)$ BF theory on an isolated horizon as a boundary just contains the bulk term. An alternative quantization procedure for the ... More
$Z_c(3900)$ as a $D\bar{D}^*$ molecule from the pole counting ruleApr 29 2016Dec 19 2016A comprehensive study on the nature of the $Z_c(3900)$ resonant structure is carried out in this work. By constructing the pertinent effective Lagrangians and considering the important final-state-interaction effects, we first give a unified description ... More
Two-Carrier Transport Induced Hall Anomaly and Large Tunable Magnetoresistance in Dirac Semimetal Cd3As2 NanoplatesMay 13 2016Cd3As2 is a model material of Dirac semimetal with a linear dispersion relation along all three directions in the momentum space. The unique band structure of Cd3As2 makes it with both Dirac and topological properties. It can be driven into a Weyl semimetal ... More
Random Point Sets on the Sphere --- Hole Radii, Covering, and SeparationDec 23 2015Aug 09 2016Geometric properties of $N$ random points distributed independently and uniformly on the unit sphere $\mathbb{S}^{d}\subset\mathbb{R}^{d+1}$ with respect to surface area measure are obtained and several related conjectures are posed. In particular, we ... More
Covering of spheres by spherical caps and worst-case error for equal weight cubature in Sobolev spacesJul 31 2014Jul 26 2017We prove that the covering radius of an $N$-point subset $X_N$ of the unit sphere $S^d \subset R^{d+1}$ is bounded above by a power of the worst-case error for equal weight cubature $\frac{1}{N}\sum_{\mathbf{x} \in X_N}f(\mathbf{x}) \approx \int_{S^d} ... More
Existence of a weak solution to the fluid-structure interaction problem in 3DOct 20 2018Jun 04 2019We study a nonlinear fluid-structure interaction problem in which the fluid is described by the three-dimensional incompressible Navier-Stokes equations, and the elastic structure is modeled by the nonlinear plate equation which includes a generalization ... More
Existence of a weak solution to the fluid-structure interaction problem in 3DOct 20 2018We study a nonlinear fluid-structure interaction problem in which the fluid is described by the three-dimensional incompressible Navier-Stokes equations, and the elastic structure is modeled by the nonlinear plate equation which includes a generalization ... More
The entropy of isolated horizons in non-minimally coupling scalar field theory from BF theoryJul 31 2015In this paper, the entropy of isolated horizons in non-minimally coupling scalar field theory and in the scalar-tensor theory of gravitation is calculated by counting the degree of freedom of quantum states in loop quantum gravity. Instead of boundary ... More
The Entropy of Higher Dimensional Nonrotating Isolated Horizons from Loop Quantum GravitySep 03 2014In this paper, we extend the calculation of the entropy of the nonrotating isolated horizons in 4 dimensional spacetime to that in a higher dimensional spacetime. We show that the boundary degrees of freedom on an isolated horizon can be described effectively ... More
Swapping and permutation operators as entanglement witnesses for quantum Heisenberg spin-$s$ systemsJan 19 2006May 19 2006Using the SU($N$) representation of the group theory, we derive the general form of the spin swapping operator for the quantum Heisenberg spin-$s$ systems. We further prove that such a spin swapping operator is equal to the spin singlet pairing operator ... More
The Conformal Field Theory on the Horizon of BTZ Black HoleMar 27 2017In three dimensional spacetime with negative cosmology constant, the general relativity can be written as two copies of SO$(2,1)$ Chern-Simons theory. On a manifold with boundary the Chern-Simons theory induces a conformal field theory--WZW theory on ... More
Stochastic Burgers equation with fractional derivative driven by multiplicative noiseFeb 10 2017Jun 04 2017This article is devoted to the study of the existence and uniqueness of mild solution to time- and space-fractional stochastic Burgers equation perturbed by multiplicative white noise. The required results are obtained by stochastic analysis techniques, ... More
On the study of stochastic fractional-order differential equation systemsNov 23 2016In this article, the existence and uniqueness about the solution for a class of stochastic fractional-order differential equation systems are investigated, where the fractional derivative is described in Caputo sense. The fractional calculus, stochastic ... More
New Regularization-Renormalization Method in Quantum Electrodynamics and Qualitative Calculation on Lamb ShiftAug 25 1997A simple but effective method for regularization-renormalization (R-R) is proposed for handling the Feynman diagram integral (FDI) at one loop level in quantum electrodynamics (QED). The divergence is substituted by some constants to be fixed via experiments. ... More
BF theory explanation of the entropy for rotating isolated horizonsMay 14 2015Jul 05 2016In this paper, the isolated horizons with rotation are considered. It is shown that the symplectic form is the same as that in the nonrotating case. As a result, the boundary degrees of freedom can be also described by an SO$(1,1)$ BF theory. The entropy ... More
Metasurface-assisted phase-matching-free second harmonic generation in lithium niobate waveguidesAug 09 2017The phase-matching condition is a key aspect in nonlinear wavelength conversion processes, which requires the momenta of the photons involved in the processes to be conserved. Conventionally, nonlinear phase matching is achieved using either birefringent ... More
Topological transport in Dirac electronic systems: A concise reviewJan 18 2017Jan 19 2017Various novel physical properties have emerged in Dirac electronic systems, especially the topological characters protected by symmetry. Current studies on these systems have been greatly promoted by the intuitive concepts of Berry phase and Berry curvature, ... More
Spectral imaging with dual compressed sensingFeb 15 2015We experimentally demonstrated a spectral imaging scheme with dual compressed sensing. With the dimensions of spectral and spatial information both compressed, the spectral image of a colored object can be obtained with only a single point detector. The ... More
Covering of spheres by spherical caps and worst-case error for equal weight cubature in Sobolev spacesJul 31 2014We prove that the covering radius of an $N$-point subset $X_N$ of the unit sphere $\mathbb{S}^d \subset \mathbb{R}^{d+1}$ is bounded above by a power of the worst-case error for equal-weight cubature $\frac{1}{N}\sum_{\mathbf{x} \in X_N}f(\mathbf{x}) ... More
Insulator-to-metal phase transition in Yb-based Kondo insulatorsApr 22 2010The periodic Anderson lattice model for the crystalline electric field (CEF)split 4f quartet states is used to describe the Yb-based Kondo insulators/semiconductors. In the slave-boson mean-field approximation, we derive the hybridized quasiparticle bands, ... More
Design of a general scientific CCD simulation and test systemMay 28 2018In this paper, we introduce a general scientific CCD simulation and test system which can meet the test requirements of different types of CCD chips from E2V company, such as measuring different signals output from modules of a CCD controller including ... More
Kondo screening coexisting with ferromagnetic order as a possible ground state for Kondo lattice systemsOct 10 2009Mar 19 2010We consider the competition between the Kondo screening effect and ferromagnetic long-range order (FLRO) within a mean-field theory of the Kondo lattice model for low conduction electron densities $n_{c}$. Depending on the parameter values, several types ... More
Design of a general scientific CCD simulation and test systemMay 28 2018Mar 05 2019In this paper, we introduce a general scientific CCD simulation and test system which can meet the test requirements of different types of CCD chips from E2V company, such as measuring different signals output from modules of a CCD controller including ... More
Multi-partite quantum nonlocality and Bell-type inequalities in an infinite-order quantum phase transition of the one-dimensional spin-1/2 XXZ chainDec 17 2014In this paper, combined with infinite time-evolving block decimation (iTEBD) algorithm and Bell-type inequalities, we investigate multi-partite quantum nonlocality in an infinite one-dimensional quantum spin-1/2 XXZ system. High hierarchy of multipartite ... More
A bubble-induced ultrastable and robust single-photon emitter in hexagonal boron nitrideJun 02 2019Quantum emitters in van der Waals (vdW) materials have attracted lots of attentions in recent years, and shown great potentials to be fabricated as quantum photonic nanodevices. Especially, the single photon emitter (SPE) in hexagonal boron nitride (hBN) ... More
Magneto-transport in copper-doped noncentrosymmetric BiTeIJul 04 2013BiTeI exhibits large Rashba spin splitting due to its noncentrosymmetric crystal structure. The study of chemical doping effect is important in order to either tune the Fermi level or refine the crystal quality. Here, we report the magneto-transport measurement ... More
Improving the performance of Twin-Field Quantum Key DistributionJan 08 2019Feb 12 2019Twin-Field Quantum Key Distribution(TF-QKD) protocol and its variants, e.g., Phase-Matching QKD(PM-QKD), Sending-or-Not QKD and TF-QKD without phase post-selection, can overcome the rate-distance limit without the help of quantum repeaters. Among all ... More
A Scaling Phenomenon in Shannon Information Uncertainty Difference of fragments in Heavy-ion CollisionsOct 27 2015The Shannon information-entropy uncertainty (in brief as "information uncertainty") is used to analyze the fragments in the measured 140$A$ MeV $^{40, 48}$Ca + $^{9}$Be and $^{58, 64}$Ni + $^{9}$Be reactions. A scaling phenomenon is found in the information-uncertainty ... More
A Driver ASIC for Scientific CCD Detectors Using 180nm TechnologyMay 29 2018Jun 01 2018In order to achieve the driver function for several types of scientific CCD detector from E2V Co Ltd, and decreasing the size of electronics of CCD detector system, an Application-specified Integrated Circuit (ASIC) was designed. It provides multi-channel ... More
Design of a Non-vacuum-cooling Compact Scientific CCD CameraMay 28 2018CCD was born in Bell Laboratories in 1969 and has been widely used in various fields. Its ultra-low noise and high quantum efficiency make it work well in particle physics, high energy physics, nuclear physics and astrophysics. Nowadays, more and more ... More
Electric control of emergent magnonic spin current and dynamic multiferroicity in magnetic insulators at finite temperaturesFeb 13 2018Conversion of thermal energy into magnonic spin currents and/or effective electric polarization promises new device functionalities. A versatile approach is presented here for generating and controlling open circuit magnonic spin currents and an effective ... More
Intrinsic anomalous Hall effect in nickel: An GGA+U studyJul 16 2011Oct 13 2011The electronic structure and intrinsic anomalous Hall conductivity of nickel have been calculated based on the generalized gradient approximation (GGA) plus on-site Coulomb interaction (GGA+U) scheme. It is found that the intrinsic anomalous Hall conductivity ... More
Valence bond spin liquid state in two-dimensional frustrated spin-1/2 Heisenberg antiferromagnetsJun 30 2003Aug 08 2003Fermionic valence bond approach in terms of SU(4) representation is proposed to describe the $J_{1}-J_{2}$ frustrated Heisenberg antiferromagnetic (AF) model on a {\it bipartite} square lattice. A uniform mean field solution without breaking the translational ... More
Parameters optimization and real-time calibration of Measurement-Device-Independent Quantum Key Distribution Network based on Back Propagation Artificial Neural NetworkDec 20 2018Dec 21 2018The parameters choosing (such as probabilities of choosing X-basis or Z-basis, intensity of signal state and decoy state, etc.) and system calibrating will be more challenging when the number of users of a measurement-device-independent quantum key distribution(MDI-QKD) ... More
Twin-field quantum key distribution with discrete phase randomizationApr 15 2019Apr 23 2019Twin-field quantum key distribution (TF-QKD) and its variant protocols are highly attractive due to its advantage of overcoming the well-known rate-loss limit for QKD protocols, i.e. $R\leqslant log_2(1-\eta)$ with $\eta$ standing for the channel transmittance. ... More
Spin-orbit torque in Pt/CoNiCo/Pt symmetric devicesOct 09 2015Current induced magnetization switching by spin-orbit torques offers an energy-efficient means of writing information in heavy metal/ferromagnet (FM) multilayer systems. The relative contributions of field-like torques and damping-like torques to the ... More
The operational and control software of Multi-channel Antarctic Solar TelescopeJun 20 2018MARST (Multi-channel Antarctic Solar Telescope) aims to observe the Sun in multiple wavebands in Antarctica and will be China's first solar telescope in Antarctica. The telescope has two tubes, corresponding to Photosphere observation which uses 11 filters ... More
Improving the performance of Twin-Field Quantum Key DistributionJan 08 2019Twin-Field Quantum Key Distribution(TF-QKD) protocol and its variants, e.g., Phase-Matching QKD(PM-QKD), Sending-or-Not QKD and TF-QKD without phase post-selection, can overcome the rate-distance limit without the help of quantum repeaters. Among all ... More
Security proof for twin-field quantum key distribution with discrete phase randomizationApr 15 2019Twin-field quantum key distribution (TF-QKD) and its variant protocols are highly attractive due to its advantage of overcoming the well-known rate-loss limit for QKD protocols, i.e. $R\leqslant log_2(1-\eta)$ with $\eta$ standing for the channel transmittance. ... More
Polarization basis tracking scheme for quantum key distribution with revealed sifted key bitsAug 01 2016Aug 02 2016Calibration of the polarization basis between the transmitter and receiver is an important task in quantum key distribution (QKD). An effective polarization-basis tracking scheme will decrease the quantum bit error rate (QBER) and improve the efficiency ... More
Coherent perfect nanoabsorbers based on negative refractionFeb 08 2012Based on both analytical dipole model analyses and numerical simulations, we propose a concept of coherent perfect nanoabsorbers (CPNAs) for divergent beams. This concept makes use of the properties of a slab with negative refraction and small losses. ... More
Tunneling conductance of graphene ferromagnet-insulator-superconductor junctionsDec 23 2009We study the transport properties of a graphene ferromagnet-insulator superconductor (FIS) junction within the Blonder-Tinkham-Klapwijk formalism by solving spin-polarized Dirac-Bogoliubov-de-Gennes equation. We find that the retro and specular Andreev ... More