A5006951653- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Diamond and Carbon-based Materials Research
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Nuclear physics research studies
- Mechanical and Optical Resonators
- Advanced Fiber Laser Technologies
- High-pressure geophysics and materials
- Medical Imaging Techniques and Applications
- Photonic and Optical Devices
- Particle Accelerators and Free-Electron Lasers
- Force Microscopy Techniques and Applications
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Quantum Information and Cryptography
- Radiation Detection and Scintillator Technologies
- Superconducting Materials and Applications
- Radio Astronomy Observations and Technology
- Plasma Diagnostics and Applications
University of Chinese Academy of Sciences
2016-2025
Wuhan University
2023-2025
Institute of High Energy Physics
2014-2024
University of Science and Technology of China
2018-2024
Peking University
2019-2024
Chinese Academy of Sciences
2008-2024
Chongqing Vocational Institute of Engineering
2023
Wenzhou University
2023
University of Groningen
2023
Shanghai Jiao Tong University
2021
Light has shown an incredible capability in precision measurement based on optomechanic interaction high vacuum by isolating environment noises. However, there are still obstructions, such as displacement and mass estimation error, highly hampering the improvement of absolute accuracy at nanoscale. Here, we present a nonlinearity metrology to precisely measure position nanoparticle with optical levitation under ${10}^{\ensuremath{-}5}\text{ }\text{ }\mathrm{mbar}$. By controlling oscillation...
Neuromorphic computing has shown remarkable capabilities in silicon-based artificial intelligence, which can be optimized by using Mott materials for functional synaptic connections. However, the research efforts focus on two-terminal synapses and envisioned networks controlled circuits, is difficult to develop integrate. Here, we propose a dynamic network with laser-controlled conducting filaments based electric field-induced local insulator-metal transition of vanadium dioxide. Quantum...
The first dedicated search for the rare neutral-kaon decay $K_L^0\to\pi^0\nu\bar{\nu}$ has been carried out in E391a experiment at KEK 12-GeV proton synchrotron. final upper limit of 2.6 $\times 10^{-8}$ 90% confidence level was set on branching ratio decay.
Abstract The accurate radio frequency (RF) ranging and localizing of objects has benefited the researches including autonomous driving, Internet Things, manufacturing. Quantum receivers have been proposed to detect signal with ability that can outperform conventional measurement. As one most promising candidates, solid spin shows superior robustness, high spatial resolution miniaturization. However, challenges arise from moderate response a RF signal. Here, by exploiting coherent interaction...
In this paper, a multiparameter optical fiber sensor based on the vernier effect of parallel cascaded Sagnac interferometer (SI) and Fabry-Perot (FPI) is designed experimentally demonstrated for temperature, strain, humidity measurements. The proposed comprised single-mode (SMF) fusion spliced to polarization-maintaining (PMF) SI an SMF hollow capillary (HCF) FPI. Combining sensing characteristics two hybrid interferometers can realize complementary advantages in three-parameter measurements...
Focusing electromagnetic field to enhance the interaction with matter has been promoting researches and applications of nano electronics photonics. Usually, evanescent-wave coupling is adopted in various structures materials confine into a subwavelength space. Here, based on direct confined electron oscillations nanowire, we demonstrate tight localization microwave down 10-6λ. A hybrid nanowire-bowtie antenna further designed focus free-space this deep-subwavelength Detected by nitrogen...
Experimental realization of a universal set quantum logic gates with high fidelity is critical to quantum-information processing, which always challenging due the inevitable interaction between system and environment. Geometric computation noise immune, thus, offers robust way enhance control fidelity. Here, we experimentally implement recently proposed extensible nonadiabatic holonomic solid spins in diamond at room temperature, maintains both flexibility resilience against decoherence...
The different \ensuremath{\beta}-delayed particle-decay modes of $^{31}\mathrm{Ar}$ are investigated by means a new silicon-detector telescope. Identification two-proton decay, and three-proton decay observed for the first time, is made possible Monte Carlo simulations detector response. Other single-proton branches also investigated, none energetically allowed \ensuremath{\beta}-\ensuremath{\alpha} \ensuremath{\beta}-p\ensuremath{\alpha} found. Finally, results this experiment compared to...
We experimentally demonstrate fast and high-fidelity geometric control of a quantum system with the brachistochrone method on hybrid spin registers in diamond. Based time-optimal universal control, single gates fidelities over $99.2%$ state nitrogen-vacancy center are realized average durations shortened by $21.5%$ compared conventional method. The fidelity two-qubit gate exceeds $96.5%$ registers. With set available, we implement entanglement-enhanced phase estimation algorithm Heisenberg...
The use of nanophotonics for optical manipulation has continuously attracted interest in both fundamental research and practical applications, due to its significantly enhanced capabilities at the nanoscale. In this work, we showed that plasmonic particles can be trapped off-axis location Gaussian beams assisted by surface plasmon resonance. displacement tuned sub-wavelength scale incident light beams. Based on these, propose a superfast orbital rotation continuous-wave laser beam realized...
High spatial resolution and low perturbation are required for mapping the electromagnetic field at nanoscale, to provide crucial information about local light-matter interaction. Using optical superresolution microscopy detection via a nitrogen-vacancy center in diamond, this work demonstrates far-field noninvasive sensing of with high accuracy approximately 50 nm. As is sensitive various physical quantities, multifunctional quantum nanoscope anticipated.
Nitrogen-vacancy centers in diamond are attractive as quantum sensors owing to their remarkable optical and spin properties under ambient conditions. Here we experimentally demonstrated a hybrid fiber-based thermometer coupled with nitrogen-vacancy center ensemble permanent magnet, where the temperature sensitivity was improved by converting variation magnetic field change based on thermal-demagnetization of magnet. We have achieved both large working range (room 373 K) millikelvin (1.6...
The performance of thinner-THGEMs (Thick Gaseous Electron Multipliers) with 0.2 mm thickness, hole diameter, 0.7 pitch and a narrow (5 ∼ 20 μm) rim has been studied. In general, the prototype gain 1 × 103 4 one single thinner-THGEM in Ar/iC4H10 (97:3) works stably at high rates. A curved parallax-free gas detector based on developed for diffraction studies, tested Beijing Synchrotron Radiation Facility (BSRF). result shows an angular resolution 0.148 degree can be achieved direct current...
The motion control of a levitated nanoparticle plays central role in optical levitation for fundamental studies and practical applications. Here, we presented digital parametric feedback cooling based on square wave modulation by switching trapping laser intensity between two levels. effects the depth signal phase result were investigated detail. Using such method, center-of-mass temperature all three motional degrees freedom can be cooled to dozens millikelvin. flexibility agility pave way...
Optical levitation in vacuum has been proved as a promising platform for precision measurement and research on microscopic thermodynamics the macroscopic quantum system. The performance of these applications is highly determined by detection trapped particle's displacement, which linked with signal through calibration coefficient. However, it still challenge to get coefficient medium vacuum. Here, we present nonlinear method obtain high accuracy fill pressure gap between 5×10−3 50 mbar. By...
Nonequilibrium thermodynamics provides a general framework for understanding nonequilibrium processes, particularly in small systems that are typically far from equilibrium and dominated by fluctuations. However, the experimental investigation of remains challenging due to lack approaches precisely manipulate states dynamics. Here, shaping effective potential energy, we propose method construct steady state (NESS) with arbitrary energy distribution. Using well-designed energy-dependent...
The rare decay K0(L) --> pi0 nu nu-bar was studied with the E391a detector at KEK 12-GeV proton synchrotron. Based on 9.4 x 10^9 K0L decays, an upper limit of 8.1 10^{-7} obtained for branching fraction 90% confidence level. We also set a X (X invisible particles) process; varied from 7.0 to 4.0 10^{-5} mass ranging 50 MeV/c^2 200 MeV/c^2.
Forward-scattering-light interferometry has become the most commonly used position detection scheme in optical levitation systems. Usually, three-set detectors are required to obtain three-dimensional motion information. Here, we simplify one set by inserting a Dove prism. We investigate role of prism measurement process with an system vacuum. The relationship between power spectral density and rotation angle is experimentally demonstrated analyzed. This work shows that can greatly reduce...
Optical detection of spin state has been widely used for the solid qubit in application quantum information processing. The signal contrast determines accuracy manipulation, sensitivity sensing and resolution imaging. Here, we demonstrated a time-gated fluorescence method enhancing nitrogen vacancy (NV) center diamond. By adjusting delay between time gate excitation laser pulse, improved both signal-to-noise ratio NV detection. An enhancement 1.86 times was reached contrast. Utilizing...