A5101622810- Quantum and electron transport phenomena
- Quantum Information and Cryptography
- Semiconductor materials and devices
- Quantum Computing Algorithms and Architecture
- Surface and Thin Film Phenomena
- Photonic and Optical Devices
- Organic Electronics and Photovoltaics
- IoT and Edge/Fog Computing
- Advancements in Semiconductor Devices and Circuit Design
- Vehicular Ad Hoc Networks (VANETs)
- Physics of Superconductivity and Magnetism
- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Semiconductor materials and interfaces
- Industrial Vision Systems and Defect Detection
- Drilling and Well Engineering
- Traffic control and management
- Matrix Theory and Algorithms
- Metal Forming Simulation Techniques
- Energy Efficient Wireless Sensor Networks
- Engineering Diagnostics and Reliability
- Coal Properties and Utilization
- GaN-based semiconductor devices and materials
- Electromagnetic Scattering and Analysis
- Elevator Systems and Control
University of Colorado Boulder
2020-2023
National Institute of Standards and Technology
2020-2022
Beijing University of Posts and Telecommunications
2021-2022
Dalian University of Technology
2020-2021
Shandong Academy of Sciences
2018-2020
China University of Mining and Technology
2020
Qilu University of Technology
2018-2020
Changchun University of Science and Technology
2019
Tsinghua University
2013
Transmon qubits are ubiquitous in the pursuit of quantum computing using superconducting circuits. However, they have some drawbacks that still need to be addressed. Most importantly, scalability transmons is limited by large device footprint needed reduce participation lossy capacitive parts circuit. In this work, we investigate and evaluate losses an alternative geometry, namely, merged-element transmon (mergemon). To end, replace external shunt capacitor a traditional with intrinsic...
Nitrogen is widely used to prevent the spontaneous combustion of coal in underground mines. A combustion-prone seam was studied investigate restraining effect nitrogen on oxidation different stages, based non-isothermal thermogravimetry-differential scanning calorimetry (TG-DSC) and electron paramagnetic resonance (EPR) experiments. We found that key feature temperatures grow steadily with increasing environment, resulting longer stages. The most significant finding there a stagnation...
The speed of elementary quantum gates, particularly two-qubit ultimately sets the limit on at which circuits can operate. In this work, we experimentally demonstrate commonly used gates nearly fastest possible allowed by physical interaction strength between two superconducting transmon qubits. We achieve implementing experimental designed using a machine-learning-inspired optimal control method. Importantly, our method only requires single-qubit drive to be moderately larger than an...
Epitaxially grown superconductor/dielectric/superconductor trilayers have the potential to form high-performance superconducting quantum devices and may even allow scalable computing with low-surface-area qubits such as merged-element transmon. In this work, we measure power-independent loss two-level-state (TLS) of epitaxial, wafer-bonded, substrate-removed Al/GaAs/Al by measuring lumped element microwave resonators at millikelvin temperatures down single-photon powers. The device is...
High-fidelity single- and two-qubit gates are essential building blocks for a fault-tolerant quantum computer. While there has been much progress in suppressing single-qubit gate errors superconducting qubit systems, still suffer from error rates that orders of magnitude higher. One limiting factor is the residual ZZ-interaction, which originates coupling between computational states higher-energy states. this interaction usually viewed as nuisance, here we experimentally demonstrate it can...
To decrease the impact of Partially Observable MDP on deep reinforcement learning performance intersection signal control, A is proposed in this paper with utilizing real-time GPS data as well control traffic lights single intersection. We integrate network (DRQN) recurrent neural (RNN) and apply network, experience pool greedy strategy strategy. It solves problem overestimation target Q value insufficient long-term standard control. The comparison was made between method Deep Q-Network...
A merged-element transmon (MET) device based on silicon (Si) fins is proposed, and the first steps to form such a “FinMET” are demonstrated. This new application of fin technology capitalizes anisotropic etch Si(111) relative Si(110) define atomically flat, high aspect ratio Si tunnel barriers with epitaxial superconductor contacts parallel sidewall surfaces. process circumvents challenges associated growth low-loss insulating lattice matched superconductors. By implementing low-loss,...
In recent years, artificial intelligence and automotive industry have developed rapidly, autonomous driving has gradually become the focus of industry. road networks, problem proximity detection refers to detecting whether two moving objects are close each other or not in real time. However, battery life computing capability mobile devices limited actual scene, which results high latency energy consumption. Therefore, it is a tough determine relationship between users with low this article,...
Due to their unique properties as lossless, nonlinear circuit elements, Josephson junctions lie at the heart of superconducting quantum information processing. Previously, we demonstrated a two-layer, submicrometer-scale overlap junction fabrication process suitable for qubits with long coherence times. Here, extend micrometer-scale junctions. This allows us fabricate other devices. For example, demonstrate an overlap-junction-based parametric amplifier that uses only 2 layers. efficient...
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Increasing the density of superconducting circuits requires compact components, however, superconductor-based capacitors typically perform worse as dimensions are reduced due to loss at surfaces and interfaces. Here, parallel plate composed aluminum-contacted, crystalline silicon fins shown be a promising technology for use in by evaluating performance lumped element resonators transmon qubits. High aspect ratio Si-fin having widths below $300nm$ with an approximate total height 3$\mu$m...
This paper presents a system in package (SiP) application of integrated passive device (IPD) filters based on silicon substrate. Four kinds IPD filters, mainly constructed with planar spiral inductors and metal-insulator-metal (MIM) capacitors, were designed integrated. Moreover, the process flow is detailed described. Through comparison between simulation results experiment results, thick Cu metal layer together BCB dielectric material proved to be proper approach modify filter's Q factor.
The ultrafast excited-state relaxation dynamics of indolo[3,2-b]carbazole (ICZ) molecules were investigated in thin films and single crystals. In the ICZ film, singlet fission (SF) was directly observed both from upper excited states SN within 480–850 fs vibrational levels state S1 6–11 ps, which fully suppressed intramolecular charge transfer (CT) process S1. crystal, exciton through SF polaron formation compete timescale (<30 fs), is accompanied by a thermally induced broadening S1–SN...
The speed of elementary quantum gates, particularly two-qubit ultimately sets the limit on at which circuits can operate. In this work, we experimentally demonstrate commonly used gates nearly fastest possible allowed by physical interaction strength between two superconducting transmon qubits. We achieve implementing experimental designed using a machine learning inspired optimal control method. Importantly, our method only requires single-qubit drive to be moderately larger than an...
Artificial intelligence and the automobile business have grown significantly in recent years, autonomous driving has progressively been industry's focus. The problem of proximity detection road networks refers to determining if two moving objects are close one other real time. However, world, mobile devices' battery life computing capabilities restricted, resulting excessive latency energy usage. As a result, relationship between users with low usage is difficult task. We formalize joint...
For correlation between attribute values in the pickling process, characteristics of property value within a certain range, introducing genetic algorithm BP neural network weights and thresholds for global optimization, optimized model process after skin embryo quality classification. Experimental results show that can improve classification calculation accuracy convergence rate, 9.16% increase over mean square error (MSE) is not optimized, bayesian decision tree algorithm, were higher than...
Rolling bearing is one of the important part industrial equipment, its affects reliability whole industry system. So, rolling fault diagnosis becomes more important. Nowadays, experts sometimes use fuzzy numbers to describe modes information. The triangular ordered with an extra orientation can be easier express In this article, firstly, we give definition numbers, operational laws and vertex distance between numbers. Secondly, arithmetic operator variant coefficient method calculate expert...