A5101695516- Quantum Information and Cryptography
- Particle Detector Development and Performance
- Physics of Superconductivity and Magnetism
- Quantum and electron transport phenomena
- Astrophysics and Cosmic Phenomena
- Advanced Frequency and Time Standards
- Radiation Detection and Scintillator Technologies
- Quantum Computing Algorithms and Architecture
- Advanced Thermodynamics and Statistical Mechanics
- Quantum Mechanics and Applications
- Advanced Algebra and Geometry
- Algebraic Geometry and Number Theory
- Homotopy and Cohomology in Algebraic Topology
- Cold Atom Physics and Bose-Einstein Condensates
- IoT-based Smart Home Systems
- Semiconductor Quantum Structures and Devices
- Radio Frequency Integrated Circuit Design
- Quantum chaos and dynamical systems
- Advancements in PLL and VCO Technologies
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Magnetic confinement fusion research
- Superconducting and THz Device Technology
- Quantum many-body systems
Southern University of Science and Technology
2024-2025
Quantum (Australia)
2024
Guilin University of Electronic Technology
2024
University of Science and Technology of China
2015-2023
Forschungszentrum Jülich
2023
Institute of Plasma Physics
2023
Chinese Academy of Sciences
2023
Institut de Mathématiques de Jussieu-Paris Rive Gauche
2013
Université Paris Cité
2013
<title>Abstract</title> Quantum metrology has emerged as a powerful tool for timekeeping, field sensing, and precision measurements within fundamental physics. With the advent of distributed quantum metrology, its capabilities have been extended to probing spatially parameters across networked systems. However, generating necessary non-local entanglement remains significant challenge, inherent incompatibility in multi-parameter estimation affects ultimate performance. Here we use...
Superconducting qubits are a promising platform for building fault-tolerant quantum computers, with recent achievement showing the suppression of logical error increasing code size. However, leakage into noncomputational states, common issue in practical systems including superconducting circuits, introduces correlated errors that undermine correction (QEC) scalability. Here, we propose and demonstrate reduction scheme utilizing tunable couplers, widely adopted ingredient large-scale...
Abstract As superconducting quantum computing continues to advance at an unprecedented pace, there is a compelling demand for the innovation of specialized electronic instruments that act as crucial conduits between processors and host computers. Here, we introduce Microwave Measurement Control System (M 2 CS) dedicated large-scale processors. M CS features compact modular design balances overall performance, scalability flexibility. Electronic tests show key metrics comparable commercial...
The Large High Altitude Air Shower Observatory is in the R&D phase, which Water Cherenkov Detector Array an important part. signals of Photo-Multiplier Tubes would vary from single photo electron to 4000 electrons, and both high precision charge time measurement required. To simplify signal processing chain, charge-to-time conversion method employed. A prototype front-end readout ASIC designed fabricated Chartered 0.35 μ m CMOS technology, integrates disctrimination converts input...
Superconducting qubits are a promising platform for building fault-tolerant quantum computers, with recent achievement showing the suppression of logical error increasing code size. However, leakage into non-computational states, common issue in practical systems including superconducting circuits, introduces correlated errors that undermine QEC scalability. Here, we propose and demonstrate reduction scheme utilizing tunable couplers, widely adopted ingredient large-scale processors....
Superconducting transmon qubits have established as a leading candidate for quantum computation, well flexible platform exploring exotic phases and dynamics. However, physical coupling naturally yields isotropic transverse interactions between qubits, restricting their access to diverse that require spatially dependent interactions. Here, we demonstrate the simultaneous realization of both pairing (XX-YY) hopping (XX+YY) by Floquet engineering. The coherent superposition these enables...
Random fluctuations caused by environmental noise can lead to decoherence in quantum systems. Exploring and controlling such dissipative processes is both fundamentally intriguing essential for harnessing systems achieve practical advantages deeper insights. In this Letter, we first demonstrate the diffusive dynamics assisted controlled dephasing superconducting circuits, contrasting with coherent evolution. We show that enhance localization a qubit array quasiperiodic order, even regime...
As superconducting quantum computing continues to advance at an unprecedented pace, there is a compelling demand for the innovation of specialized electronic instruments that act as crucial conduits between processors and host computers. Here, we introduce Microwave Measurement Control System (M2CS) dedicated large-scale processors. M2CS features compact modular design balances overall performance, scalability, flexibility. Electronic tests show key metrics comparable commercial instruments....
Quantum metrology has emerged as a powerful tool for timekeeping, field sensing, and precision measurements within fundamental physics. With the advent of distributed quantum metrology, its capabilities have been extended to probing spatially parameters across networked systems. However, generating necessary non-local entanglement remains significant challenge, inherent incompatibility in multi-parameter estimation affects ultimate performance. Here we use superconducting network with...
Large-scale superconducting quantum computers require massive numbers of high-performance cryogenic low-noise amplifiers (cryo-LNA) for qubit readout. Here we present a C-Band monolithic microwave integrated circuit (MMIC) cryo-LNA this purpose. This is based on 150 nm GaAs pseudomorphic high electron mobility transistor (pHEMT) process and implemented with three-stage cascaded architecture, where the first stage adopts careful impedance match to optimize noise return loss. The integration...
Abstract The edge turbulence characteristics and the induced radial transport have been investigated in localized mode (ELM) suppression by using <?CDATA $n = $?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>n</mml:mi> <mml:mo>=</mml:mo> </mml:math> 4 resonant magnetic perturbation coils on EAST, with ${q_{95}} <mml:mrow> <mml:msub> <mml:mi>q</mml:mi> <mml:mn>95</mml:mn> </mml:mrow> </mml:msub> 3.6 electron collisionality $\nu _{\text{e}}^* \approx...
Abstract We study the arithmetic of algebraic varieties defined over number fields by applying Lagrange interpolation to fibrations. Assuming finiteness Tate–Shafarevich group a certain elliptic curve, we show, for Châtelet surface bundles curves, that violation Hasse principle being accounted Brauer–Manin obstruction is not invariant under an arbitrary finite extension ground field.
Time and charge measurements over a large dynamic range from 1 Photo Electron (P.E.) to 4000 P.E. are required for the Water Cherenkov Detector Array (WCDA), which is one of key components in Large High Altitude Air Shower Observatory (LHAASO). To simplify circuit structure readout electronics, front end ASIC was designed. Based on charge-to-time conversion method, output pulse width corresponds input signal information while time picked off through discriminator, thus can be digitized...
We study the Brauer-Manin obstruction to Hasse principle and weak approximation for 0-cycles on algebraic varieties that possess a fibration structure. The exactness of local-to-global sequence $(E)$ Chow groups was known only whose base is either curve or projective space. In present paper, we prove fibrations bases are Ch\^{a}telet surfaces models homogeneous spaces connected linear with stabilizers. require all fibres split most satisfy 0-cycles, generic fibre has 0-cycle degree $1$ exact fibres.