A5100360158- Quantum and electron transport phenomena
- Advancements in Semiconductor Devices and Circuit Design
- Quantum Information and Cryptography
- Semiconductor Quantum Structures and Devices
- Topological Materials and Phenomena
- Graphene research and applications
- Quantum optics and atomic interactions
- Quantum Computing Algorithms and Architecture
- Quantum many-body systems
- Cold Atom Physics and Bose-Einstein Condensates
- Semiconductor materials and devices
- Catalytic Processes in Materials Science
- Atomic and Subatomic Physics Research
- Quantum, superfluid, helium dynamics
- Neural Networks and Reservoir Computing
- Hydrocarbon exploration and reservoir analysis
- Magnetic properties of thin films
- Advanced Chemical Physics Studies
- Geochemistry and Geologic Mapping
- GaN-based semiconductor devices and materials
- High voltage insulation and dielectric phenomena
- Lightning and Electromagnetic Phenomena
- Data Management and Algorithms
- Plasmonic and Surface Plasmon Research
- Enzyme Catalysis and Immobilization
Chinese Academy of Sciences
2013-2025
Southwest University of Science and Technology
2025
Institute of Microelectronics
2023-2025
University of Science and Technology of China
2012-2024
Anyang Normal University
2024
Changchun Institute of Applied Chemistry
2024
CAS Key Laboratory of Urban Pollutant Conversion
2018-2023
Nanjing University
2021
Xi'an Aeronautical University
2020
China Southern Power Grid (China)
2019
Operation speed and coherence time are two core measures for the viability of a qubit. Strong spin-orbit interaction (SOI) relatively weak hyperfine make holes in germanium (Ge) intriguing candidates spin qubits with rapid, all-electrical coherent control. Here we report ultrafast single-spin manipulation hole-based double quantum dot hut wire (GHW). Mediated by strong SOI, Rabi frequency exceeding 540 MHz is observed at magnetic field 100 mT, setting record qubit control semiconductor...
Abstract Conventional MXene‐based thick electrodes with stacked and tortuous microstructures suffer from sluggish charge transport low‐utilization of active substances, thus a limited boost in areal energy density the assembled micro‐supercapacitors (MSCs). Herein, duplication wood‐like microstructure is realized MXene/Ag‐nanowires (AgNWs) hybrid aerogel electrode (WL‐M/A‐AE) via directional freeze‐drying technique. Benefitting uniform 3D vertically‐aligned microchannels as highways for ions...
Semiconductor quantum dots are promising hosts for qubits to build a processor. In the last twenty years, intensive researches have been carried out and diverse kinds of based on different types semiconductor were developed. Recent advances prove high fidelity single two qubit gates, even prototype algorithms. These breakthroughs motivate further research realizing fault tolerant computer. this paper we review main principles various dot latest associated experimental results. Finally future...
Hole spin qubits based on germanium (Ge) have strong tunable orbit interaction (SOI) and ultrafast qubit operation speed. Here we report that the Rabi frequency (f_Rabi) of a hole in Ge hut wire (HW) double quantum dot (DQD) is electrically tuned through detuning energy middle gate voltage (V_M). f_Rabi gradually decreases with increasing energy; contrary, positively correlated V_M. We attribute our results to change electric field SOI contribution excited state dots f_Rabi. further...
The ability to realize high-fidelity quantum communication is one of the many facets required build generic computing devices. In addition processing, sensing, and storage, transferring resulting states demands a careful design that finds no parallel in classical communication. Existing experimental demonstrations information transfer solid-state systems are largely confined small chains with few qubits, often relying upon non-generic schemes. Here, by using large-scale superconducting...
We prepared Al 2 O 3 -CeO -Pd catalysts containing trace amounts of Ce, which achieved 100% CO conversion at 160 °C and remained active during the 35 h durability test. This work provides ideas for designing highly stable catalytic materials.
Hole spins confined in semiconductor quantum dot systems have gained considerable interest for their strong spin-orbit interactions (SOIs) and relatively weak hyperfine interactions. Here, we experimentally demonstrate a tunable SOI double germanium ($\mathrm{Ge}$) hut wire (HW), which could help to enable fast all-electric spin manipulations while suppressing unwanted decoherence. Specifically, measure the transport spectra Pauli-spin-blockade regime double-quantum-dot device. By adjusting...
The Kerr-cat qubit is a bosonic in which multiphoton Schrödinger cat states are stabilized by applying two-photon drive to an oscillator with Kerr nonlinearity. suppressed bit-flip rate increasing size makes this promising candidate implement quantum error correction codes tailored for noise-biased qubits. However, achieving strong light-matter interactions necessary stabilizing and controlling has traditionally required microwave drives that heat the degrade its performance. In contrast,...
Realizing a strong coupling between spin and resonator is an important issue for scalable quantum computation in semiconductor systems. Benefiting from the advantages of spin–orbit strength long coherence time, Ge hut wire, which proposed to be site-controlled grown scalability, considered promising candidate achieve this goal. Here we present hybrid architecture on-chip superconducting microwave coupled holes dot. The charge stability diagram can obtained amplitude phase responses...
Ship detection is important for a wide range of applications. In this article, an airborne passive interferometric microwave sensor (PIMS) proposed as powerful complementary tool ship detection. The fundamental by the PIMS introduced. A specification called "the factor" addressed to quantitatively assess performance probability discussed and based on constant false-alarm rate (CFAR). Numerical simulations are performed demonstrate feasibility PIMS. impacts atmosphere sea wind also in terms...
Abstract 3D integration presents a potential technical solution to break the fundamental transistor density limit of ground rule scaling. Despite notable progress, unavoidable high thermal budget in conventional silicon‐transistor‐based results process complexity and degraded device performances. Herein, heterogeneous complementary metal‐oxide‐semiconductor field effect (CMOS FET) technology, integrating carbon nanotube (CNT) transistors into Si back‐end‐of‐line (BEOL) processes is...
Holes in nanowires have drawn significant attention recent years because of the strong spin–orbit interaction, which plays an important role constructing Majorana zero modes and manipulating qubits. Here, from strongly anisotropic leakage current spin blockade regime for a double dot, we extract full g-tensor find that field is plane with azimuthal angle 59° to axis nanowire. The direction indicates interaction along nanowire, may originated interface inversion asymmetry Ge hut wires. We...
Recent advancements of intermediate-scale quantum processors have triggered tremendous interest in the exploration practical advantage. The simulation fluid dynamics, a highly challenging problem classical physics but vital for applications, emerges as good candidate showing utility. Here, we report an experiment on digital unsteady flows, which consists encoding, evolution, and detection flow states, with superconducting processor. algorithm is based Hamiltonian using hydrodynamic...
We demonstrate new mechanisms for gate-tunable current partition at topological zero-line intersections in a graphene-based splitter. Based on numerical calculations of the nonequilibrium Green's functions and Landauer-B\"uttiker formula, we show that presence perpendicular magnetic field order few Teslas allows carrier sign dependent routing. In zero-field limit control routing can be achieved within range 10-$90%$ total incoming by tuning density tilted or modifying relative magnitude bulk...
Series of “Hopcalite” catalysts for low-temperature CO oxidation are prepared through a facile ultra-sonic spray pyrolysis approach. It has been found that the temperature and Cu/Mn atomic ratio in initial precursors show significant impacts on catalytic activity Cu-Mn-O catalysts. The catalyst synthesized at 550 °C with = 1/2 precursor (Cu1Mn2-550) shows highest towards (T100 63 °C; Ea 17.04 KJ mol−1), owing to formation CuMn2O4 phase poor crystallinity. synergistic effect Cu Mn species...
The germanium (Ge) hut wire system has strong spin-orbit coupling, a long coherence time due to very large heavy-light hole splitting, and the advantage of site-controlled large-scale positioning. These properties make Ge promising candidate for realization coupling spin superconducting resonators scalability multiple qubit coupling. We have coupled reflection line resonator double quantum dot (DQD) formed in wire. amplitude phase responses microwave revealed that charge stability diagrams...
The recent observations of a stable molecular condensate emerging from bosonic atoms and related "super-chemical" dynamics have raised an intriguing set questions.Here we provide microscopic understanding this unexpected stability in atom-molecule superfluids; show one essential element behind these phenomena is extremely narrow Feshbach resonance 133 Cs at 19.849G.Comparing theory experiment demonstrate how enables the dynamical creation large closed-channel fraction superfluid, appearing...
Quantum interference is a natural consequence of wave-particle duality in quantum mechanics, and widely observed at the atomic scale. One interesting manifestation coherent population trapping (CPT), first proposed three-level driven systems optical experiments. Here, we demonstrate CPT gate-defined semiconductor double dot (DQD), with some unique twists as compared to systems. Specifically, observe both nondriven situations. We further show that DQD could be used generate adiabatic state...
Tunability of an artificial quantum system is crucial to its capability process information. However, tunability usually poses significant demand on the design and fabrication a device. In this work, we demonstrate that Floquet engineering based longitudinal driving provides distinct possibilities in enhancing without needing additional resources. particular, study multilevel model gate-defined double dots, where coherent interference occurs when driven longitudinally. We develop effective...