A5082058572- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Quantum and electron transport phenomena
- Neural Networks and Reservoir Computing
- Quantum many-body systems
- Quantum Mechanics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Thermodynamics and Statistical Mechanics
- Glioma Diagnosis and Treatment
- Ga2O3 and related materials
- Atomic and Subatomic Physics Research
- Quantum-Dot Cellular Automata
- Physics of Superconductivity and Magnetism
- Coding theory and cryptography
- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Advanced Data Storage Technologies
- Crustacean biology and ecology
- Hematological disorders and diagnostics
- ZnO doping and properties
- Chalcogenide Semiconductor Thin Films
- Orthopedic Infections and Treatments
- Cognitive Computing and Networks
- Peripheral Nerve Disorders
- Distributed and Parallel Computing Systems
QuantumCTek (China)
2025
University of Science and Technology of China
2009-2023
Hefei National Center for Physical Sciences at Nanoscale
2017-2023
Beijing Academy of Quantum Information Sciences
2020-2022
Capital Medical University
2018-2022
Beijing Children’s Hospital
2022
CAS Key Laboratory of Urban Pollutant Conversion
2019-2021
Chinese Academy of Sciences
2005-2020
Beijing Institute of Neurosurgery
2018
Scaling up to a large number of qubits with high-precision control is essential in the demonstrations quantum computational advantage exponentially outpace classical hardware and algorithmic improvements. Here, we develop two-dimensional programmable superconducting processor, Zuchongzhi, which composed 66 functional tunable coupling architecture. To characterize performance whole system, perform random circuits sampling for benchmarking, system size 56 20 cycles. The cost simulation this...
Simulating quantum walkers Quantum walks are the mechanical analogs of classical random walks, describing propagation a walker across lattice, and find application in developing algorithms for simulating many-body systems. Gong et al. used an 8-by-8 two-dimensional (2D) superconducting qubit square lattice containing 62 functional qubits to show how multiple (two) traverse 2D array, interfering as they go. The authors were also able program paths that follow, demonstrating Mach-Zehnder...
Quantum walks on a superconducting circuit generate large-scale quantum superposed states. This allows for classically unavailable applications, such as simulating many-body systems, and also yields algorithms exponentially faster than classical computation. Yan et al. demonstrate of one two strongly correlated microwave photons in one-dimensional array 12 qubits with short-range interactions. The scalability the platform could lead to implementations simulation complex systems. Science ,...
Quantum error correction is a critical technique for transitioning from noisy intermediate-scale quantum (NISQ) devices to fully fledged computers. The surface code, which has high threshold rate, the leading code two-dimensional grid architecture. So far, repeated capability of not been realized experimentally. Here, we experimentally implement an error-correcting distance-3 consists 17 qubits, on \textit{Zuchongzhi} 2.1 superconducting processor. By executing several consecutive cycles,...
We report the preparation and verification of a genuine 12-qubit entanglement in superconducting processor. The processor that we designed fabricated has qubits lying on 1D chain with relaxation times ranging from 29.6 to 54.6 μs. fidelity was measured be above 0.5544±0.0025, exceeding multipartite threshold by 21 statistical standard deviations. After thermal cycling, state further improved 0.707±0.008. Our entangling circuit generate linear cluster states is depth invariant number uses...
In the relentless pursuit of quantum computational advantage, we present a significant advancement with development Zuchongzhi 3.0. This superconducting computer prototype, comprising 105 qubits, achieves high operational fidelities, single-qubit gates, two-qubit and readout fidelity at 99.90%, 99.62%, 99.13%, respectively. Our experiments an 83-qubit, 32-cycle random circuit sampling on 3.0 highlight its superior performance, achieving 1×10^{6} samples in just few hundred seconds. task is...
Superconducting circuits have emerged as a powerful platform of quantum simulation, especially for emulating the dynamics many-body systems, because their tunable interaction, long coherence time, and high-precision control. Here in experiments, we construct Bose-Hubbard ladder with array 20 qubits on 24-qubit superconducting processor. We investigate theoretically demonstrate experimentally single- double-excitation states distinct behaviors, indicating uniqueness ladder. observe linear...
Understanding various phenomena in nonequilibrium dynamics of closed quantum many-body systems, such as thermalization, information scrambling, and nonergodic dynamics, is crucial for modern physics. Using a ladder-type superconducting processor, we perform analog simulations both the XX-ladder model one-dimensional XX model. By measuring local observables, entanglement entropy, tripartite mutual information, signal thermalization scrambling ladder. In contrast, show that chain, free...
We experimentally study the ergodic dynamics of a 1D array 12 superconducting qubits with transverse field, and identify regimes strong weak thermalization different initial states. observe convergence local observable to its thermal expectation value in strong-thermalizaion regime. For thermalization, exhibits an oscillation around value, which can only be attained by time average. also demonstrate that entanglement entropy concurrence characterize thermalization. Our work provides...
Abstract Entangling gates with error rates reaching the threshold for quantum correction have been reported CZ using adiabatic longitudinal control based on interaction between |11〉 and |20〉 states. Here, we design implement nonadiabatic gates, which outperform in terms of speed fidelity, gate times $$1.25/(2\sqrt 2 g_{01,10})$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>1.25</mml:mn> <mml:mo>∕</mml:mo> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:msqrt>...
Entanglement is crucial for quantum networks and computation, yet maintaining high-fidelity entangled states hindered by decoherence resource-intensive purification methods. Here, we experimentally demonstrate entanglement pumping, utilizing bosonic error correction (QEC) codes as long-coherence-time storage qubits. By repetitively generating with short-coherence-time qubits injecting it into QEC-protected logical qubits, our approach effectively preserves entanglement. Through detection to...
High-fidelity two-qubit gates are essential for the realization of large-scale quantum computation and simulation. Tunable coupler design is used to reduce problem parasitic coupling frequency crowding in many-qubit systems thus thought be advantageous. Here we an extensible 5-qubit system which center transmon qubit can couple every four near-neighboring qubits via a capacitive tunable experimentally demonstrate high-fidelity controlled-phase (CZ) gate by manipulating central one qubit....
The development of high-fidelity two-qubit quantum gates is essential for digital computing. Here, we propose and realize an all-microwave parametric Controlled-Z (CZ) by coupling strength modulation in a superconducting Transmon qubit system with tunable couplers. After optimizing the design coupler together control pulse numerically, experimentally realized 100 ns CZ gate high fidelity 99.38%$ \pm$0.34% error being 0.1%. We note that our are not affected distortion do need correction,...
Superconducting quantum processors are manufactured based on a semiconductor process, which makes qubit integration possible. At the same time, this kind of exhibits high-performance fidelity and decoherence time requires programmable arbitrary waveform generator (AWG). This paper presents implementation an AWG with sampling rate two-gigabit samples per second as well 16-bit vertical resolution digital-to-analog converters. The AWGs designed for scaled-up usage scenario by integrating them...
Dynamic quantum computing can support error correction circuits to build a large general-purpose computer, which requires electronic instruments perform the closed-loop operation of readout, processing, and control within 1% qubit coherence time. In this paper, we present low-latency readout electronics for dynamic superconducting computing. The use analog-to-digital converter capture analog signals, field-programmable gate array (FPGA) process digital general I/O resources FPGA forward...
Digital-to-analog converter (DAC) and analog-to-digital (ADC) as an important part of the superconducting quantum computer are used to control readout qubit states. The complexity instrument manipulation increases rapidly number qubits grows. Low-speed data transmission, imperfections realistic instruments coherent gradually highlighted which have become bottlenecks in scaling up qubits. To deal with challenges, we present a solution this study. Based on client-server (C/S) model, develop...
Larvae of Ibla cumingi from Daya Bay, China were cultured in the laboratory. Larval development includes six naupliar stages and a non-feeding cypris stage following ground patterns cirripeds. reached nine days at ∼25°C after hatching. Morphological features including cephalic shield, frontal horns, labrum, abdominal process, antennules, antennae mandibles all nauplii described illustrated using light microscopy. A full morphological description cyprid larvae was provided scanning electron...
Superconducting quantum computer is manufactured based on semiconductor process which makes qubits integration possible. At the same time, this kind of qubit exhibits high performance fidelity, de-coherence scalability and requires a programmable arbitrary waveform generator (AWG). This paper presents implementation an AWG composed two gigabit samples per second (GSPS) sampling rate, 16 bit vertical resolution digital to analog converters (DACs). The integrated with separate microwave...