A5036157046- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Quantum and electron transport phenomena
- Quantum many-body systems
- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Magnetic confinement fusion research
- Astro and Planetary Science
- Topological Materials and Phenomena
- Intracranial Aneurysms: Treatment and Complications
- Geomagnetism and Paleomagnetism Studies
- Traumatic Brain Injury and Neurovascular Disturbances
- Physics of Superconductivity and Magnetism
- Cerebrovascular and Carotid Artery Diseases
- Solar Thermal and Photovoltaic Systems
- Cold Atom Physics and Bose-Einstein Condensates
- Orbital Angular Momentum in Optics
- Nonlinear Photonic Systems
- Embedded Systems and FPGA Design
- Computational Fluid Dynamics and Aerodynamics
- Neural dynamics and brain function
- Microtubule and mitosis dynamics
- Surface and Thin Film Phenomena
- Dust and Plasma Wave Phenomena
- Photovoltaic System Optimization Techniques
Luoyang Normal University
2021-2024
Zhejiang University
2010-2023
Hunan Normal University
2020-2023
Purple Mountain Observatory
2018-2023
Chinese Academy of Sciences
2019
University of Science and Technology of China
2010-2019
Zhejiang University of Technology
2019
Non-Abelian anyons are exotic quasiparticle excitations hosted by certain topological phases of matter. They break the fermion-boson dichotomy and obey non-Abelian braiding statistics: their interchanges yield unitary operations, rather than merely a phase factor, in space spanned topologically degenerate wavefunctions. building blocks quantum computing. However, experimental observation characterizing statistics is notoriously challenging has remained elusive hitherto, spite various...
Non-Abelian topological orders offer an intriguing path towards fault-tolerant quantum computation, where information can be encoded and manipulated in a topologically protected manner immune to arbitrary local noises perturbations. However, realizing non-Abelian ordered states is notoriously challenging both condensed matter programmable systems, it was not until recently that signatures of statistics were observed through digital simulation approaches. Despite these exciting progresses,...
Based on a 'shortcut-to-adiabaticity' (STA) scheme, we theoretically design and experimentally realize set of high-fidelity single-qubit quantum gates in superconducting Xmon qubit system. Through precise microwave control, the is driven to follow fast 'adiabatic' trajectory with assistance counter-diabatic field correction derivative removal by adiabatic gates. The experimental measurements process tomography interleaved randomized benchmarking show that fidelities our STA are higher than...
With a counter-diabatic field supplemented to the reference control field, "shortcut adiabaticiy" (STA) protocol is implemented in superconducting phase qubit. The Berry measured short time scale good agreement with theoretical result acquired from an adiabatic loop. trajectory of qubit vector extracted, verifying alternatively by integrated solid angle. classical noise introduced amplitude or total field. mean under either almost equal that without noise, while variance can be described...
Abstract Nonadiabatic holonomic quantum computation has received increasing attention due to its robustness against control errors and high-speed realization. The original protocol of nonadiabatic one-qubit gates been experimentally demonstrated with a superconducting transmon qutrit. However, it requires two noncommuting complete an arbitrary gate, doubling the exposure time gate error sources thus leaving vulnerable environment-induced decoherence. Single-shot subsequently proposed realize...
In quantum information processing, the shortcut-to-adiabaticity (STA) protocol has been proposed to accelerate a system's adiabatic evolution by introducing an additional, counterdiabatic Hamiltonian. This is particularly suitable for realizing controlled-$Z$ ($C\phantom{\rule{0}{0ex}}Z$) gate, but Hamiltonian requires variable, complex coupling of qubits. By representation transformation and rescaling method, this work uses STA obtain high-fidelity $C\phantom{\rule{0}{0ex}}Z$ gate with two...
In a `shortcut-to-adiabaticity' (STA) protocol, the counter-diabatic Hamiltonian, which suppresses non-adiabatic transition of reference `adiabatic' trajectory, induces quantum uncertainty work cost in framework thermodynamics. Following theory derived recently [Funo et al 2017 Phys. Rev. Lett. 118 100602], we perform an experimental measurement STA statistics high-quality superconducting Xmon qubit. Through frozen-Hamiltonian and frozen-population techniques, experimentally realize...
Abstract Spermiogenesis is a highly ordered process in male germ cell differentiation. KIFC1, C-terminal kinesin, participates acrosome formation and nuclear shaping during spermiogenesis of mammals. In this paper we used Western Blot confocal microscopy to identify the existence distribution KIFC1 microtubules caridean shrimp Macrobrachium nipponense. first appears cytoplasm early spermatids, then co-localizes with punctate pattern. also diffusely present nucleus late spermatids. mid- have...
Abstract Electromagnetic waves (EMWs) below or near the proton gyrofrequency can be left-hand (LH) right-hand (RH) polarized waves, which are believed to fundamentally important in energization of plasma particles. Proton and alpha beams that associated with EMW activities ubiquitous space astrophysical plasmas. Based upon linear Vlasov theory, we study effect on LH RH instabilities driven by both presence beam populations a compensated-current system. The results show thresholds, real...
Abstract Streaming proton and alpha particles are permeating in the solar wind atmosphere. These considerably affect normal waves electron–proton–alpha plasmas, especially inducing electrostatic electromagnetic ion/ion beam instabilities. This paper gives a comprehensive investigation on stable unstable parallel-propagating wave modes plasmas with streaming particles. It illustrates that at large velocity condition, backward-propagating fast-magnetosonic/whistler (Alfvén/proton-beam or...
The experimental optimization of a two-qubit controlled-$Z$ (cz) gate is realized following two different data-driven gradient-ascent pulse engineering (GRAPE) protocols with the aim optimizing operator and output quantum state, respectively. For both GRAPE protocols, key computation gradients utilizes mixed information input $Z$-control measurement. With an imperfect initial in flattop waveform, our implementation shows that cz quickly improved fidelities subject to optimized pulses are...
Greenberger-Horne-Zeilinger (GHZ) states, as maximally entangled Schr\"{o}dinger cat play vital roles in the foundations of quantum physics and technology, but creating preserving these fragile states pose tremendous challenges. Discrete time crystals (DTCs), originally aimed at exploring exotic nonequilibrium matters, have raised significant scientific interest, whether this brilliant concept can lead to true applications remains unclear. Here we propose an efficient protocol suitable for...
Aneurysmal subarachnoid hemorrhage (aSAH) is a significant cause of morbidity and mortality throughout the world. Dynamic nomogram to predict prognosis elderly aSAH patients after endovascular coiling has not been reported. Thus, we aimed develop clinically useful dynamic risk 6-month unfavorable outcome in coiling. We conducted retrospective study including 209 admitted People's Hospital Hunan Province for from January 2016 June 2021. The main measure was (mRS ≥ 3). used multivariable...
Measurement-based feedback control is central in quantum computing and precise control. Here we realize a fast flexible field-programmable-gate-array-based superconducting Xmon qubit system. The latency of room-temperature electronics custom optimized to be as short 140 ns. Projective measurement signal produces tag actuate conditional pulse gate the qubit. In feed-forward process, measurement-based brought different target for two-qubit experiment, controls are simultaneously actuated...
Abstract Solar wind observations have shown that the drift velocity of proton beam relative to background is order local Alfvén velocity. The proton-beam instability has been suggested play an important role in decelerating beams. Most existing studies examined kinetic properties simple Maxwellian or drift-Maxwellian plasmas. In this paper, we systemically investigate effects temperature anisotropy on growth rates instabilities using linear Vlasov equations and nonlinear evolution these at...
Abstract Ion cyclotron waves (ICWs) can play important roles in the energization of plasma particles. Charged particle beams are ubiquitous space, and astrophysical plasmas effectively lead to generation ICWs. Based on linear kinetic theory, we consider excitation ICWs by ion electron a compensated-current system. We also investigate competition between reactive instabilities. The results show that both capable generating For driven beams, there is critical beam velocity, v bi c ,...
Abstract From soft X-ray emission, the solar flare temperatures are from several MK to dozens of times MK, which higher than preflare coronal temperatures. A combination heating mechanisms may contribute problem in loops. In this paper, we propose an important mechanism flaring loops heating, excited electron acoustic wave (EAW) by flare-accelerated fast beams can lead via collisionless Landau damping effect produced wave–particle resonant interaction. Taking account return-current beams,...
Abstract In this paper, two‐dimensional hybrid simulations are used to study wave excitation and evolution throughout a low‐Mach number quasi‐parallel shock. Simulation results show that fast magnetosonic waves, ion Bernstein waves with harmonics possible Alfven/ion cyclotron can be excited in the upstream region, their small phase velocities compared injected flow velocity convection shock front where they mode converted into several groups of downstream including Alfven along directions...
Kinetic Alfvén waves (KAWs) are dispersive (AWs) with a perpendicular wavelength comparable to the ion (ion–acoustic) gyroradius or electron inertial length and can play an important role in wave energy dissipation particle energization. In this paper, we investigate resonant mode conversion of AWs into KAWs for case arbitrary angle α between density gradient ambient plasma magnetic field inhomogeneous two-temperature magnetoplasma. The results show that sensitively depends on α, , parallel...
Abstract In this paper, we study low-frequency waves upstream of quasi-parallel shocks by using two-dimensional (2D) hybrid simulations. Simulation results show that reflected particles can backstream and form a superthermal particle component in plasmas an area just before the shock front. The interacts with incident result quasi-perpendicular fast magnetosonic comparable wave amplitudes, they have right-hand linear polarization, respectively. Further upstream, after being scattered these...
Solar wind observations often show that the drift velocity of a proton beam relative to background decreases with heliocentric distance. Proton-beam instability has been suggested play an important role in deceleration proton-beam velocity; effects electron temperature anisotropy on have not examined. Based general kinetic dispersion relation solver for magnetized plasma (PDRK), we investigate oblique Alfvén/ion-cyclotron (A/IC) and parallel magnetosonic/whistler (M/W) instabilities driven...