Results for "M. Feng"

total 208184took 0.12s
Selective pulse implementation of two-qubit gates for spin-3/2 based fullerene quantum information processingNov 26 2003Jul 05 2004We propose two potentially practical schemes to carry out two-qubit quantum gates on endohedral fullerenes $N@C_{60}$ or $P@C_{60}$. The qubits are stored in electronic spin degrees of freedom of the doped atom $N$ or $P$. By means of the magnetic dipolar ... More
Single spin detection by qubit SWAP to a molecular nanomagnetDec 10 2004Mar 03 2005Spin state detection is a key but very challenging step for any spin-based solid-state quantum computing technology. In fullerene based quantum computer technologies, we here propose to detect the single spin inside a fullerene by transferring the quantum ... More
Readout scheme of the fullerene-based quantum computer by a single electron transistorJan 26 2004Aug 04 2004The readout of the quantum spin state is a challenge for any spin-based quantum computing implementation. We propose a scheme, based on the achieved technique of single electron transistor (SET), to implement the readout of electronic spin state inside ... More
Fast multi-orbital equation of motion impurity solver for dynamical mean field theoryAug 11 2011Aug 25 2011We propose a fast multi-orbital impurity solver for the dynamical mean field theory (DMFT). Our DMFT solver is based on the equations of motion (EOM) for local Green's functions and constructed by generalizing from the single-orbital case to the multi-orbital ... More
Sudden death and birth of entanglement beyond the Markovian approximationMar 25 2009Apr 19 2009We investigate the entanglement dynamics of two initially entangled qubits interacting independently with two uncorrelated reservoirs beyond the Markovian approximation. Quite different from the Markovian reservoirs [C. E. Lopez et al., Phys. Rev. Lett. ... More
Advanced multi-orbital impurity solver for dynamical mean field theory based on the equation of motion approachAug 15 2011Aug 25 2011We propose an improved fast multi-orbital impurity solver for the dynamical mean field theory (DMFT) based on equations of motion (EOM) of Green's functions and decoupling scheme. In this scheme the inter-orbital Coulomb interactions are treated fully ... More
Entanglement preservation for multilevel systems under non-ideal pulse controlMay 18 2010We investigate how to effectively preserve the entanglement between two noninteracting multilevel oscillators coupled to a common reservoir under non-ideal pulse control. A universal characterization using fidelity is developed for the behavior of the ... More
Investigation of on-site inter-orbital single electron hoppings in general multi-orbital systemsOct 18 2011Jan 27 2012A general multi-orbital Hubbard model, which includes on-site inter-orbital electron hoppings, is introduced and studied. It is shown that the on-site inter-orbital single electron hopping is one of the most basic interactions. Two electron spin-flip ... More
A layered multiple importance sampling scheme for focused optimal Bayesian experimental designMar 26 2019We develop a new computational approach for "focused" optimal Bayesian experimental design with nonlinear models, with the goal of maximizing expected information gain in targeted subsets of model parameters. Our approach considers uncertainty in the ... More
Universal scaling in the Knight shift anomaly of doped periodic Anderson modelFeb 02 2017We report a Dynamical Cluster Approximation (DCA) investigation of the doped periodic Anderson model (PAM) to explain the universal scaling in the Knight shift anomaly predicted by the phenomenological two-fluid model and confirmed in many heavy-fermion ... More
Quasilocal Center-of-MassMar 25 2004Apr 27 2004Gravitating systems have no well-defined local energy-momentum density. Various quasilocal proposals have been made, however the center-of-mass moment (COM) has generally been overlooked. Asymptotically flat graviating systems have 10 total conserved ... More
On the Critical Capacity of the Hopfield ModelDec 21 2000We estimate the critical capacity of the zero-temperature Hopfield model by using a novel and rigorous method. The probability of having a stable fixed point is one when $\alpha\le 0.113$ for a large number of neurons. This result is an advance on all ... More
Strong-Coupling Behavior of Two $t-J$ Chains with Interchain Single-Electron HoppingJan 12 1994Jan 13 1994Using the fermion-spin transformation to implement spin-charge separation of constrained electrons, a model of two $t-J$ chains with interchain single-electron hopping is studied by abelian bosonization. After spin-charge decoupling the charge dynamics ... More
Constraining Photon Portal Dark Matter with Texono and Coherent DataOct 30 2017Nov 08 2018Dark matter may reside in sector without Standard Model (SM) gauge interactions. One way in which such a dark sector can still impact SM particles through non-gravitational interactions is via the "photon portal" in which a dark photon kinetically mixes ... More
Exact solution of quantum dynamics of a cantilever coupling to a single trapped ultracold ionSep 22 2005Dec 21 2005The quantum behavior of a precooled cantilever can be probed highly efficiently by coupling to a trapped ultracold ion, in which a fast cooling of the cantilever down to the ground vibrational state is possible. We solve the dynamics of the coupling system ... More
Lower ground state due to counter-rotating wave interaction in trapped ion systemApr 02 2007We consider a single ion confined in a trap under radiation of two traveling waves of lasers. In the strong-excitation regime and without the restriction of Lamb-Dicke limit, the Hamiltonian of the system is similar to a driving Jaynes-Cummings model ... More
The most generalized analytical approximation to the solution of single-mode spin-boson model without rotating-wave approximationMay 04 2009The single-mode spin-boson model (SMSBM) has extensive application in different subfields of physics. In the absence of rotating-wave approximation (RWA), we try to solve SMSBM analytically. We argue that the analytical expression obtained is the most ... More
Strong-Coupling Behavior of Two $t-J$ Chains with Interchain Single Electron HoppingJan 29 1994Using the fermion-spin transformation to implement spin-charge separation of constrained electrons, a model of two $t-J$ chains with interchain single-electron hopping is studied by abelian bosonization. After spin-charge decoupling the charge dynamics ... More
Dynamical behavior of a large complex systemDec 01 2006Limit theorems for a linear dynamical system with random interactions are established. These theorems enable us to characterize the dynamics of a large complex system in details and assess whether a large complex system is stable or unstable, answering ... More
On the Nevanlinna characteristic of f(z+η) and difference equations in the complex planeSep 12 2006May 09 2008We investigate the growth of the Nevanlinna Characteristic of f(z+\eta) for a fixed \eta in this paper. In particular, we obtain a precise asymptotic relation between T(r,f(z+\eta) and T(r,f), which is only true for finite order meromorphic functions. ... More
Supersymmetry and the Linear ColliderOct 29 2002We present a pedagogical introduction to supersymmetry and supersymmetric models and give an overview of the potential of the linear collider for studying them. If supersymmetry is found, its discovery will bring with it many more questions than answers. ... More
Three dimensional cooling and detecting of a nanosphere with a single cavityJul 06 2010Dec 20 2010We propose an experimental scheme to cool and measure the three-dimensional (3D) motion of an optically trapped nanosphere in a cavity. Driven by three lasers on TEM00, TEM01, and TEM10 modes, a single cavity can cool a trapped nanosphere to the quantum ... More
Rheology of Thickly-Coated Granular-Fluid SystemsDec 17 2018We investigate the link between particle-scale dynamics and bulk behaviors of thickly-coated particle-fluid flows using computational simulations. We find that, similar to dense fully-saturated slurries, the form the rheology takes in these systems can ... More
The readout of the fullerene-based quantum computing by a scanning tunneling microscopeOct 11 2006We consider to detect the electron spin of a doped atom, i.e., a nitrogen or a phosphorus, caged in a fullerene by currently available technique of the scanning tunneling microscope (STM), which actually corresponds to the readout of a qubit in the fullerene-based ... More
The Electronic Structure of CaCuO$_2$ From the B3LYP Hybrid FunctionalDec 24 2002The electronic structure of the infinite layer compound CaCuO$_2$ has been calculated with the B3LYP hybrid density functional. The mixing of the Hartree-Fock exchange in the exchange-correlation energy separated the bands crossing Fermi energy to form ... More
Accurate First-Principles Electrochemical Phase Diagrams for Ti Oxides from Density Functional CalculationsNov 17 2015Developing an accurate simulation method for the electrochemical stability of solids, as well as understanding the physics related with its accuracy, is critically important for improving the performance of compounds and predicting the stability of new ... More
Stability of the dynamics of an asymmetric neural networkDec 01 2006We study the stability of the dynamics of a network of n neurons intercting linearly through a random gaussian matrix of excitatory and inhibitory type. Using the aproach developed in a previous paper we show some interesting properties of the dynamic ... More
A Recursive Method to Calculate UV-divergent Parts at One-Loop Level in Dimensional RegularizationFeb 05 2012Feb 20 2012A method is introduced to calculate the UV-divergent parts at one-loop level in dimensional regularization. The method is based on the recursion, and the basic integrals are just the scaleless integrals after the recursive reduction, which involve no ... More
Universal quantum computation with quantum-dot cellular automata in dephasing-free subspaceJan 30 2008Aug 22 2008We investigate the possibility to have electron-pairs in dephasing-free subspace (DFS), by means of the quantum-dot cellular automata (QCA) and single-spin rotations, to carry out a high-fidelity and deterministic universal quantum computation. We show ... More
$Apart: A Generalized Mathematica Apart FunctionApr 11 2012Aug 20 2012We have generalized the \textsc{Mathematica} function \texttt{Apart} from 1 to $N$ dimension, the generalized function \texttt{\$Apart} can decompose any linear dependent elements in $\mathcal{V}_{x}^*$ to irreducible ones. The elements in $\mathcal{V}_{x}^*$ ... More
Automated One-loop Computation in Quarkonium Process within NRQCD FrameworkJul 22 2013In last decades, it has been realized that the next-to-leading order corrections may become very important, and sometimes requisite, for some processes involving quarkoinum production or decay, e.g., $e^+e^- \to J/\psi + \eta_c$ and $J/\psi \to 3\gamma$. ... More
Robust Defense Strategy for Gas-Electric Systems Against Malicious AttacksMar 02 2016Mar 23 2016This paper proposes a methodology to identify and protect vulnerable components of connected gas and electric infrastructures from malicious attacks, and to guarantee a resilient operation by deploying valid corrective actions (while accounting for the ... More
Key Reconciliation with Low-Density Parity-Check Codes for Long-Distance Quantum CryptographyFeb 24 2017Apr 17 2017The speed at which two remote parties can exchange secret keys over a fixed-length fiber-optic cable in continuous-variable quantum key distribution (CV-QKD) is currently limited by the computational complexity of post-processing algorithms for key reconciliation. ... More
A new method to measure the virial factors in the reverberation mapping of AGNsDec 08 2015Nov 20 2016Based on the gravitational redshift, one prediction of Einstein's general relativity theory, of broad optical emission lines in active galactic nuclei (AGNs), a new method is proposed to estimate the virial factors $f$ in measuring black hole masses $M_{\rm{RM}}$ ... More
Influences of Radiation Pressures on Mass Estimates of Supermassive Black Holes in AGNsMay 12 2015Oct 06 2015In this paper, we investigate the influences of two continuum radiation pressures of the central engines on the black hole mass estimates for 40 active galactic nuclei (AGNs) with high accretion rates. The two continuum radiation pressure forces, usually ... More
Rotating Solutions in Critical Lovelock GravitiesSep 28 2016For appropriate choices of the coupling constants, the equations of motion of Lovelock gravities up to order n in the Riemann tensor can be factorized such that the theories admits a single (A)dS vacuum. In this paper we construct two classes of exact ... More
High-precision evaluation of Wigner's d-matrix by exact diagonalizationJul 16 2015Oct 05 2015The precise calculations of the Wigner's d-matrix are important in various research fields. Due to the presence of large numbers, direct calculations of the matrix using the Wigner's formula suffer from loss of precision. We present a simple method to ... More
Matrix Product Representation of Locality Preserving UnitariesApr 06 2017The matrix product representation provides a useful formalism to study not only entangled states, but also entangled operators in one dimension. In this paper, we focus on unitary transformations and show that matrix product operators that are unitary ... More
Quantum-memory-assisted entropic uncertainty principle under noiseMar 15 2012The measurement outcomes of two incompatible observables on a particle can be precisely predicted when it is maximally entangled with a quantum memory, as quantified recently [Nature Phys. 6, 659 (2010)]. We explore the behavior of the uncertainty relation ... More
Dissipative dynamics of quantum discord under quantum chaotic environmentOct 19 2010We investigate the dissipative dynamics of quantum discord in a decoherence model with two initially entangled qubits in addition to a quantum kicked top. The two qubits are uncoupled during the period of our study and one of them interacts with the quantum ... More
Efficient generation of entangled photons by cavity QEDJul 14 2006A potential scheme is proposed to generate complete sets of entangled photons in the context of cavity quantum electrodynamics (QED). The scheme includes twice interactions of atoms with cavities, in which the first interaction is made in two-mode optical ... More
Black hole in a superconducting plasmaMar 19 2019The generalized vortical formalism provides an electrodynamic description for superconducting states---in the generalized vortical formalism, a superconducting state may be defined by the vanishing of an appropriate generalized vorticity and characterized ... More
Nonlinear elasticity of disordered fiber networksJul 27 2015Disordered biopolymer gels have striking mechanical properties including strong nonlinearities. In the case of athermal gels (such as collagen-I) the nonlinearity has long been associated with a crossover from a bending dominated to a stretching dominated ... More
Percolation-induced exponential scaling in the large current tails of random resistor networksSep 12 2012Sep 25 2013There is a renewed surge in percolation-induced transport properties of diverse nano-particle composites (cf. RSC Nanoscience & Nanotechnology Series, Paul O'Brien Editor-in-Chief). We note in particular a broad interest in nano-composites exhibiting ... More
In Silico Design, Extended Molecular Dynamic Simulations and Binding Energy Calculations for a New Series of Dually Acting Inhibitors against EGFR and HER2May 29 2013Starting from the lead structure we have identified in our previous works, we are extending our insight understanding of its potential inhibitory effect against both EGFR and HER2 receptors. Herein and using extended molecular dynamic simulations and ... More
Nuclear spin qubits in a trapped-ion quantum computerApr 26 2009Physical systems must fulfill a number of conditions to qualify as useful quantum bits (qubits) for quantum information processing, including ease of manipulation, long decoherence times, and high fidelity readout operations. Since these conditions are ... More
Quantum information processing with a single photon by input-output process regarding low-Q cavitiesFeb 09 2009Both cavity QED and photons are promising candidates for quantum information processing. We consider a combination of both candidates with a single photon going through spatially separate cavities to entangle the atomic qubits, based on the input-output ... More
Efficient and High-Fidelity Generation of Atomic Cluster State with Cavity-QED and Linear OpticsMar 14 2007We propose a scheme to generate cluster states of atomic qubits by using cavity quantum electrodynamics (QED) and linear optics, in which each atom is confined in a resonant optical cavity with two orthogonally polarized modes. Our scheme is robust to ... More
Cluster-state preparation and multipartite entanglement analyzer with fermionsDec 09 2005Dec 13 2005Quantum cluster states and entangled state analyzers are essential to measurement-based quantum computing. We propose to generate a quantum cluster-state and to make multipartite entanglement analyzer by using noninteracting free electrons or conduction ... More
TESTING SUPERSYMMETRY AT THE NEXT LINEAR COLLIDERFeb 09 1995Feb 09 1995Up to now, almost all discussion of supersymmetry at future colliders has been concerned with particle searches. However, if candidates for supersymmetric particles are found, there is much more that we will want to know about them. Supersymmetry predicts ... More
Alignment and Nonlinear Elasticity in Biopolymer GelsFeb 12 2014Oct 14 2014We present a Landau type theory for the non-linear elasticity of biopolymer gels with a part of the order parameter describing induced nematic order of fibers in the gel. We attribute the non-linear elastic behavior of these materials to fiber alignment ... More
Small Interplanetary Magnetic Flux RopeMar 26 2019Small interplanetary magnetic flux ropes (SIMFRs) are often detected by space satellites in the interplanetary space near 1 AU. These ropes can be fitted by a cylindrically symmetric magnetic model. The durations of SIMFRsare usually <12 h, and the diameters ... More
Robustness of the Entangled States $2 \times N \times M$ Against Qubit LossApr 15 2019A quantum system may suffer from local noises in experiment, and be disturbed partially or completely. In practice, sometimes the multipartite quantum system lose some parts due to local noises, and in this case it is interesting to know whether the residual ... More
Analog Superconducting Quantum Simulator for Holstein PolaronsJul 03 2013Dec 04 2013We propose an analog quantum simulator for the Holstein molecular-crystal model based on a superconducting circuit QED system in the dispersive regime. By varying the driving field on the superconducting resonators, one can readily access both the adiabatic ... More
Bits from Photons: Oversampled Image Acquisition Using Binary Poisson StatisticsJun 06 2011Dec 05 2011We study a new image sensor that is reminiscent of traditional photographic film. Each pixel in the sensor has a binary response, giving only a one-bit quantized measurement of the local light intensity. To analyze its performance, we formulate the oversampled ... More
Implementation of three-qubit Grover search in cavity QEDJul 03 2007Using resonant interaction of three Rydberg atoms with a single-mode microwave cavity, we consider a realization of three-qubit Grover search algorithm in the presence of weak cavity decay, based on a previous idea for three-qubit quantum gate [Phys. ... More
Proposed method for direct measurement of non-Markovian character of the qubits coupled to bosonic reservoirsDec 15 2009Mar 24 2010The non-Markovianity is a recently proposed characterization of the non-Markovian behavior in an open quantum system, based on which we first present a practical idea for directly measuring the non-Markovian character of a single qubit coupled to a zero-temperature ... More
Generation of N-qubit W state with rf-SQUID qubits by adiabatic passageDec 19 2006A simple scheme is presented to generate n-qubit W state with rf-superconducting quantum interference devices (rf-SQUIDs) in cavity QED through adiabatic passage. Because of the achievable strong coupling for rf-SQUID qubits embedded in cavity QED, we ... More
Predicting exotic molecular states composed of nucleon and P-wave charmed mesonJun 29 2014Aug 07 2014In this work, we study the interaction between a nucleon and a $P$-wave charmed meson in the $T$ doublet by exchanging a pion. Our calculations indicate that a nucleon and a $P$-wave charmed meson with $J^P=0^+$ or $J^P=1^+$ in the $T$ doublet can form ... More
Optimal Control of Wireless Computing NetworksOct 27 2017Augmented information (AgI) services allow users to consume information that results from the execution of a chain of service functions that process source information to create real-time augmented value. Applications include real-time analysis of remote ... More
Supercharge optical arraysSep 15 2018Oct 06 2018We introduce the notion of a supercharge optical array synthesized according to supersymmetric charge operators. Starting from an arbitrary array, mathematical supersymmetry transformation can be used systematically to create a zero-energy physical state ... More
Preconditioned Steepest Descent Methods for some Nonlinear Elliptic Equations Involving p-Laplacian TermsJul 06 2016Nov 24 2016We describe and analyze preconditioned steepest descent (PSD) solvers for fourth and sixth-order nonlinear elliptic equations that include p-Laplacian terms on periodic domains in 2 and 3 dimensions. The highest and lowest order terms of the equations ... More
An energy stable fourth order finite difference scheme for the Cahn-Hilliard equationDec 17 2017In this paper we propose and analyze an energy stable numerical scheme for the Cahn-Hilliard equation, with second order accuracy in time and the fourth order finite difference approximation in space. In particular, the truncation error for the long stencil ... More
Quantum interferometry with binary-outcome measurements in the presence of phase diffusionApr 04 2014Jul 09 2014Optimal measurement scheme with an efficient data processing is important in quantum-enhanced interferometry. Here we prove that for a general binary outcome measurement, the simplest data processing based on inverting the average signal can saturate ... More
Matching Collinear and Small-x Factorization Calculations for Inclusive Hadron Production in pA CollisionsMay 24 2014Jul 17 2014We construct a theoretical framework to match the formulas for forward inclusive hadron productions in pA collisions in the small-x saturation formalism and collinear factorization. The small-x calculation can be viewed as a power series in $Q_s^2/k_\perp^2$, ... More
Magnetothermal and magnetorotational instabilities in hot accretion flowsNov 24 2010Jan 14 2011In a hot, dilute, magnetized accretion flow, the electron mean-free path can be much greater than the Larmor radius, thus thermal conduction is anisotropic and along magnetic field lines. In this case, if the temperature decreases outward, the flow may ... More
Bell-state preparation for fullerene based electron spins in distant peapod nanotubesSep 18 2008We propose a potentially practical scheme, in combination with the Bell-state analyzer [Zhang et al., Phys. Rev. A 73, 014301 (2006)], to generate Bell states for two electron spins confined, respectively, in two distant fullerenes. To this end, we consider ... More
Generation of entangled photons by trapped ions in microcavities under a magnetic field gradientSep 21 2005We propose a potential scheme to generate entangled photons by manipulating trapped ions embedded in two-mode microcavities, respectively, assisted by a magnetic field gradient. By means of the spin-spin coupling due to the magnetic field gradient and ... More
Simple scheme for two-qubit Grover search in cavity QEDJul 14 2005Following the proposal by F. Yamaguchi et al.[Phys. Rev. A 66, 010302 (R) (2002)], we present an alternative way to implement the two-qubit Grover search algorithm in cavity QED. Compared with F. Yamaguchi et al.'s proposal, with a strong resonant classical ... More
Non-iterative recomputation of dense layers for performance improvement of DCNNSep 14 2018An iterative method of learning has become a paradigm for training deep convolutional neural networks (DCNN). However, utilizing a non-iterative learning strategy can accelerate the training process of the DCNN and surprisingly such approach has been ... More
Analysis of a Mixed Finite Element Method for a Cahn-Hilliard-Darcy-Stokes SystemDec 04 2013Dec 21 2013In this paper we devise and analyze a mixed finite element method for a modified Cahn-Hilliard equation coupled with a non-steady Darcy-Stokes flow that models phase separation and coupled fluid flow in immiscible binary fluids and diblock copolymer melts. ... More
Optimal Dynamic Cloud Network ControlAug 31 2017Distributed cloud networking enables the deployment of a wide range of services in the form of interconnected software functions instantiated over general purpose hardware at multiple cloud locations distributed throughout the network. We consider the ... More
A Second-Order Energy Stable Backward Differentiation Formula Method for the Epitaxial Thin Film Equation with Slope SelectionJun 06 2017Jun 27 2017In this paper, we study a novel second-order energy stable Backward Differentiation Formula (BDF) finite difference scheme for the epitaxial thin film equation with slope selection (SS). One major challenge for the higher oder in time temporal discretization ... More
Graphene on metal surface: gap opening and n-dopingDec 25 2007Graphene grown on metal surface, Cu(111), with a boron nitride(BN) buffer layer is studied for the first time. Our first-principles calculations reveal that charge is transferred from the copper substrate to graphene through the BN buffer layer which ... More
Z=110--111 Elements and the Stability of Heavy and Superheavy ElementsNov 29 1995The recent discovery of isotopes with Z=110--111 suggests evidence for (1) a monopole--monopole interaction that does not appear explicitly in Nilsson--Strutinsky mass systematics, and (2) a competition between $SU(2)$ and $SU(3)$ dynamical symmetries ... More
Preparation of cluster states and W states with superconducting- quantum-interference-device qubits in cavity QEDAug 14 2006We propose schemes to create cluster states and W states by many superconducting-quantum-interference-device (SQUID) qubits in cavities under the influence of the cavity decay. Our schemes do not require auxiliary qubits, and the excited levels are only ... More
Universal quantum computation with electronic qubits in decoherence-free subspaceOct 22 2007We investigate how to carry out universal quantum computation deterministically with free electrons in decoherence-free subspace by using polarizing beam splitters, charge detectors, and single-spin rotations. Quantum information in our case is encoded ... More
Teleportation with trapped ions in a magnetic field gradientJul 08 2005By means of the Ising terms generated by Coulomb interaction between ions and the magnetic field gradient, we carry out teleportation with insurance with trapped ions. We show the feasibility and the favorable feature of our scheme by comparing with the ... More
Hadronic Vacuum Polarization Contribution to g-2 from the LatticeDec 21 2011We give a short description of the present situation of lattice QCD simulations. We then focus on the computation of the anomalous magnetic moment of the muon using lattice techniques. We demonstrate that by employing improved observables for the muon ... More
Supersymmetry-guided method for mode selection and optimization in coupled systemsJun 05 2018Single-mode operation of coupled systems such as optical-fiber bundles, lattices of photonic waveguides, or laser arrays requires an efficient method to suppress unwanted super-modes. Here, we propose a systematic supersymmetry-based approach to selectively ... More
Toric Duality as Seiberg Duality and Brane DiamondsSep 07 2001Jul 24 2002We use field theory and brane diamond techniques to demonstrate that Toric Duality is Seiberg duality for N=1 theories with toric moduli spaces. This resolves the puzzle concerning the physical meaning of Toric Duality as proposed in our earlier work. ... More
Observability of Earth-skimming Ultra-high Energy NeutrinosMay 08 2001Apr 19 2002Neutrinos with energies above 10^8 GeV are expected from cosmic ray interactions with the microwave background and are predicted in many speculative models. Such energetic neutrinos are difficult to detect, as they are shadowed by the Earth, but rarely ... More
Contrasting behavior of the structural and magnetic properties in Mn- and Fe-doped In$_2$O$_3$ filmsMay 21 2013We have observed room temperature ferromagnetism (FM) in In$_2$O$_3$ thin films doped with either 5 at.% Mn or Fe, prepared by pulsed laser deposition (PLD) at substrate temperatures ranging from 300 to 600$\,^{\circ}{\rm C}$. The dependence of saturation ... More
Complex short pulse and coupled complex short pulse equationsDec 22 2013Feb 13 2015In the present paper, we propose a complex short pulse equation and a coupled complex short equation to describe ultra-short pulse propagation in optical fibers. They are shown to be integrable due to the existence of Lax pairs and infinite number of ... More
Next-to-leading-order QCD corrections to gluon fragmentation into ${}^1S_0^{(1,8)}$ quarkoniaOct 09 2018Within the NRQCD factorization framework, we compute the next-to-leading-order QCD corrections to the gluon fragmentation into the ${}^1S_0^{(1,8)}$ Fock components of a quarkonium, at the lowest order in velocity expansion. We follow the operator definition ... More
Quantum mechanical NMR implementation of DNA algorithm for satisfiability problemFeb 02 2008DNA computation could in principle solve the satisfiability (SAT) problem due to the operations in parallel on extremely large numbers of strands. We demonstrate some quantum gates corresponding to the DNA ones, based on which an implementation of DNA ... More
Deterministically entangling distant nitrogen-vacancy centers by a nanomechanical cantileverJul 31 2009Aug 27 2009We present a practical scheme by global addressing to deterministically entangle negatively charged nitrogen-vacancy (N-V) centers in distant diamonds using a nano-mechanical cantilever with the magnetic tips strongly coupled to the N-V electron spins. ... More
Measurement of neutron total cross-sections of 209Bi at the Pohang Neutron FacilityJun 06 2014Measurements of neutron total cross-sections of natural bismuth in the neutron energy region from 0.1 eV to 100 eV have been performed by using the time-of-flight method at the Pohang Neutron Facility, which consists of an electron linear accelerator, ... More
Chebyshev-type cubature formulas for doubling weights on spheres, balls and simplexesMay 13 2017Jul 13 2017This paper proves that given a doubling weight $w$ on the unit sphere $\mathbb{S}^{d-1}$ of $\mathbb{R}^d$, there exists a positive constant $K_w$ such that for each positive integer $n$ and each integer $N\geq \max_{x\in \mathbb{S}^{d-1}} \frac {K_w} ... More
Normal-state pseudogap and electron flat dispersion in copper oxide materialsJun 06 2000The anomalous momentum and doping dependence of the electron spectral function and electron dispersion for copper oxide materials in the underdoped regime are studied within the t-J model. It is shown that the electron spectrum is changed with dopings, ... More
FormLink/FeynCalcFormLink : Embedding FORM in Mathematica and FeynCalcDec 14 2012Dec 17 2012FORM, a symbolic manipulation system, has been widely used in a lot of calculations for High Energy Physics due to its high performance and fficient design. Mathematica, another computational software program, has also widely been used, but more for reasons ... More
Pseudogap effects on the charge dynamics in the underdoped copper oxide materialsMay 13 2002Within the t-J model, the charge dynamics of copper oxide materials in the underdoped regime is studied based on the fermion-spin theory. It is shown that both in-plane charge dynamics and c-axis charge dynamics are mainly governed by the scattering from ... More
Are Antiprotons Forever?Jun 29 1995Oct 12 1995Up to one million antiprotons from a single LEAR spill have been captured in a large Penning trap. Surprisingly, when the antiprotons are cooled to energies significantly below 1 eV, the annihilation rate falls below background. Thus, very long storage ... More
Electromagnetic form factors of spin 1/2 doubly charmed baryonsJul 03 2018We study the electromagnetic form factors of the doubly charmed baryons, using covariant chiral perturbation theory within the extended on-mass-shell (EOMS) scheme. Vector-meson contributions are also taken into account. We present results for the baryon ... More
EmotioNet Challenge: Recognition of facial expressions of emotion in the wildMar 03 2017This paper details the methodology and results of the EmotioNet challenge. This challenge is the first to test the ability of computer vision algorithms in the automatic analysis of a large number of images of facial expressions of emotion in the wild. ... More
Nuclear Shell Model Calculations with Fundamental Nucleon-Nucleon InteractionsMay 16 1995Some fundamental Nucleon-Nucleon interactions and their applications to finite nuclei are reviewed. Results for the few-body systems and from Shell-Model calculations are discussed and compared to point out the advantages and disadvantages of the different ... More
The fermion dynamical symmetry model for the even--even and even--odd nuclei in the Xe--Ba regionOct 08 1995The even--even and even--odd nuclei $^{126}$Xe-$^{132}$Xe and $^{131}$Ba-$^{137}$Ba are shown to have a well-realized $SO_8 \supset SO_6 \supset SO_3$ fermion dynamical symmetry. Their low-lying energy levels can be described by a unified analytical expression ... More
Observing momentum disturbance in double-slit "which-way" measurementsMay 05 2018Making a "which-way" measurement (WWM) to identify which slit a particle goes through in a double-slit apparatus will reduce the visibility of interference fringes. There has been a long-standing controversy over whether this can be attributed to an uncontrollable ... More
Timescale Analysis of Spectral LagsJul 21 2004A technique for timescale analysis of spectral lags performed directly in the time domain is developed. Simulation studies are made to compare the time domain technique with the Fourier frequency analysis for spectral time lags. The time domain technique ... More
Spatially Resolved Thermometry of Resistive Memory DevicesJun 07 2017The operation of resistive and phase-change memory (RRAM and PCM) is controlled by highly localized self-heating effects, yet detailed studies of their temperature are rare due to challenges of nanoscale thermometry. Here we show that the combination ... More