A5042536107- Quantum and electron transport phenomena
- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Quantum many-body systems
- Topological Materials and Phenomena
- Spectroscopy and Quantum Chemical Studies
- Physics of Superconductivity and Magnetism
- Atomic and Subatomic Physics Research
- Advanced Numerical Analysis Techniques
- Mitochondrial Function and Pathology
- Human-Automation Interaction and Safety
- Quality Function Deployment in Product Design
- Analytical Chemistry and Chromatography
- Technology Assessment and Management
- Immunotherapy and Immune Responses
- Advanced Glycation End Products research
- Metabolomics and Mass Spectrometry Studies
- Immune Cell Function and Interaction
- Air Traffic Management and Optimization
- Microfluidic and Bio-sensing Technologies
- Electrowetting and Microfluidic Technologies
- Energy Efficient Wireless Sensor Networks
- Interconnection Networks and Systems
- Quantum, superfluid, helium dynamics
- Aviation Industry Analysis and Trends
Collaborative Innovation Center of Advanced Microstructures
2019-2022
Nanjing University
2019-2022
Third Xiangya Hospital
2022
Central South University
2022
Wenzhou Medical University
2020
Georgia Institute of Technology
2011-2013
University of Wisconsin–Madison
2001
A Berry curvature is an imaginary component of the quantum geometric tensor (QGT) and well studied in many branches modern physics; however, metric as a real QGT less explored. Here, by using tunable superconducting circuits, we experimentally demonstrate two methods to directly measure for characterizing geometry topology underlying states parameter space. The first method probe transition probability after sudden quench, second one detect excitation rate under weak periodic driving....
Monopoles play a center role in gauge theories and topological matter. There are two fundamental types of monopoles physics: vector tensor monopoles. Examples include the Dirac monopole 3D Yang 5D, which have been extensively studied observed condensed matter or artificial systems. However, less studied, their observation has not reported. Here we experimentally construct tunable spin-1 Hamiltonian to generate then measure its unique features with superconducting quantum circuits. The energy...
Abstract Stimulated Raman adiabatic passage (STIRAP) is a widely used protocol to realize high-fidelity and robust quantum control in various systems. However, further application of this superconducting qubits limited by population leakage caused the only weak anharmonicity. Here, we introduce an optimally controlled shortcut-to-adiabatic (STA) technique speed-up STIRAP qudit. By modifying shapes pulses, experimentally fast (32 ns) (0.996 ± 0.005) state transfer. In addition, demonstrate...
Fast, robust two-qubit gate operation with low susceptibility to crosstalk are the key scalable quantum-information processing. A parametrically driven is inherently insensitive crosstalk, while superadiabatic control can speed up without losing accuracy. We propose and experimentally implement gates using parametric modulation on superconducting quantum circuits. Our results demonstrate preservation of adiabaticity at a close limit, in addition robustness against instability. controlled-$Z$...
Topology played an important role in physics research during the last few decades. In particular, quantum geometric tensor that provides local information about topological properties has attracted much attention. It will reveal interesting but have not been measured non-Abelian systems. Here, we use a four-qubit system superconducting circuits to construct degenerate Hamiltonian with parametric modulation. By manipulating periodic drivings, simulate Bernevig–Hughes–Zhang model and obtain...
Based on the geometrical nature of quantum phases, non-adiabatic holonomic control (NHQC) has become a standard technique for enhancing robustness in constructing gates. However, conventional approach NHQC is sensitive to instability, as it requires driving pulses cover fixed pulse area. Furthermore, even small-angle rotations, all operations need be completed with same duration time. Here we experimentally demonstrate time-optimal and unconventional (called TOUNHQC), which can optimize...
Pancreatic beta cells are highly susceptible to oxidative stress, which plays a crucial role in diabetes outcomes. Progress has been slow identify molecules that could be utilized enhance cell survival and function under stress. Itaconate, byproduct of the tricarboxylic acid cycle, both anti-inflammatory antioxidant properties. The effects itaconate on stress relatively unknown. We explored 4-octyl itaconate—a cell-permeable derivative itaconate—on MIN6 (a model) conditions caused by...
Coherent quantum state transfer is a vital step in information processing. Based on the stimulated Raman adiabatic passage (STIRAP), we realize robust between two superconducting qubits, mediated by tunable coupler. Utilizing parametric coupling techniques, construct STIRAP Hamiltonian modulating coupler frequency. A population fidelity of 95.1 (±2.0)% achieved and consistent with numerical simulation result 95.4%. By preparing initial maximal superposition one qubit, research how phase...
Possessing the noise-resilience feature, geometric phases have become important in robust quantum computation. Gates based on Abelian and non-Abelian been experimentally demonstrated different physical systems. However, previous proposals require cyclic evolution with a constant operation time even for small rotation angles, which set limit to gate time. Here, we realize noncyclic gates, where condition is removed proportional angle. With adiabatic process sped up by shortcut adiabaticity,...
Quasiparticles, especially the ones near Josephson junctions in superconducting qubits, are known as an important source of decoherence. By injecting quasiparticles into a quantum chip, we characterized diffusion feature by measuring energy relaxation time and residual excited-state population transmon qubit. From extracted transition rates, phenomenologically modeled quasiparticle circuit that contained “hot” nonequilibrium addition to low-energy ones.
We propose and demonstrate experimentally the arbitrary state-transfer in a qubit by using superadiabatic approach superconducting circuit. encode time-dependent dark state generated an applied microwave field, speeding up adiabatic evolution transitionless quantum driving algorithms. This is realized qutrit system, which consists of ancillary level. Furthermore, we analyze robustness implementation measure fidelity transfer operation randomized benchmarking technique.
Quantum adiabatic transfer is widely used in quantum computation and simulation. However, the speed limited by approximation condition, which hinders its application systems with a short decoherence time. Here we demonstrate state transfers that jump along geodesics one-qubit two-qubit superconducting transmons. This approach possesses advantages of speed, robustness, high-fidelity compared usual process. Our protocol provides feasible strategies for improving manipulation gate operation circuits.
The air transportation system is undergoing significant changes in order to be able face the future challenges such as environmental concerns and increase demand. Forecasts are essential plan make decisions on what improvements crucial. While there various forecast methodologies available, this study adopts agent-based modeling simulation technique a way generate demand forecasts. Since any mode subject competition interactions with other modes, multimodal perspective emphasized. existing...
Abstract Background Millions of adults have been reported with hyperlipemia in the world. It is still unclear whether plasma level essential amino acids (AAs) will be influenced by hyperlipemia. This study was aimed to investigate AAs levels and underlying metabolic relationship hyperlipidemic subjects. Methods An ultra-high performance liquid chromatography-tandem mass spectrometric (UPLC-MS/MS) method developed for determination phenylalanine (Phe), valine (Val), histidine (His),...
Herein, a two‐qubit system is experimentally simulated through four‐level superconducting circuit. By mapping the energy levels of to noncomposite system, some gates with designed microwave pulses, such as Hadamard and CNOT gates, are implemented. Furthermore, Shannon entropy measured log 2 uncertainty relation verified, which describes that single‐qudit possesses hidden quantum correlations.
Abstract Designing and fabricating large-scale superconducting quantum chips with increasing number of qubits is a pressing challenge for the computing. Here, we propose three-dimensional stacked chip architecture comprised building blocks. In which, two primary types blocks are qubit block coupling block. They designed as functional parts that can be utilized within same footprint across multiple levels stack in vertical direction. Common technological problems, such sensitivity capacitors...
Shortcuts to adiabaticity have been proved an effective routine for precise quantum state manipulation. Here, we experimentally demonstrate invariant-based shortcuts speed up the population transfer in a superconducting circuit. Through inverse engineering of Hamiltonian, realize this protocol single-qubit and two-qubit system. The Lewis–Risenfeld phase is characterized experimentally. Furthermore, investigate robustness scheme against amplitude frequency errors.
Scalable quantum computation demands high‐fidelity gate operation, which is required to be fast and robust. The geometric considered robust certain types of noises, while its duration time normally longer than a dynamical routine. Herein, universal nonadiabatic with shortened loop (NAGGSL) in superconducting circuit demonstrated. methods state tomography (QST) randomized benchmarking (RB) are used characterize the fidelity, proving that decoherence effect can reduced by this protocol....
Stimulated Raman adiabatic passage (STIRAP) is a widely used protocol to realize high-fidelity and robust quantum control in various systems. However, further application of this superconducting qubits limited by population leakage caused the only weak anharmonicity. Here we introduce an optimally controlled shortcut-to-adiabatic (STA) technique speed up STIRAP qudit. By modifying shapes pulses, experimentally fast (32 ns) state transfer. In addition, demonstrate that our against parameter...
In article number 2100500, Xinsheng Tan, Yang Yu, and co-workers use a four-level superconducting quantum loop to simulate two-qubit system. By mapping the energy levels of system non-composite system, simulations several gate operations, including CNOT Hadamard gate, are completed in convenient way. Furthermore, authors generate entangled states verify log2 entropic inequality. The results indicate that qudit is indeed huge platform for information.