A5085501039- Quantum and electron transport phenomena
- Quantum Computing Algorithms and Architecture
- Topological Materials and Phenomena
- Quantum many-body systems
- Quantum Information and Cryptography
- Mechanical and Optical Resonators
- Physics of Superconductivity and Magnetism
- Photonic and Optical Devices
- Acoustic Wave Resonator Technologies
- Analog and Mixed-Signal Circuit Design
Czech Academy of Sciences, Institute of Physics
2025
Chinese Academy of Sciences
2024-2025
University of Chinese Academy of Sciences
2023-2025
Institute of Physics
2023-2025
Quantum simulation of different exotic topological phases quantum matter on a noisy intermediate-scale (NISQ) processor is attracting growing interest. Here, we develop one-dimensional 43-qubit superconducting processor, named Chuang-tzu, to simulate and characterize emergent states. By engineering diagonal Aubry-André-Harper (AAH) models, experimentally demonstrate the Hofstadter butterfly energy spectrum. Using Floquet engineering, verify existence zero modes in commensurate off-diagonal...
Topological phases are robust against weak perturbations, but break down when disorder becomes sufficiently strong. However, moderate can also induce topologically nontrivial phases. Thouless pumping, as a (1+1)D counterpart of the integer quantum Hall effect, is one simplest manifestations topology. Here, we report experimental observations competition and interplay between pumping on 41-qubit superconducting processor. We improve Floquet engineering technique to realize cycles adiabatic by...
We have proposed and experimentally verified a tunable interqubit coupling scheme for large-scale integration of superconducting qubits. The key feature the is insertion connecting pads between qubit element. In such way, distance two qubits can be increased considerably to few millimeters, leaving enough space arranging control lines, readout resonators, other necessary structures. provides more wiring flip-chip process reduces crosstalk from lines use term coupler with capacitively pad...
Thouless pumping, a dynamical version of the integer quantum Hall effect, represents quantized charge pumped during an adiabatic cyclic evolution. Here we report experimental observations nontrivial topological pumping that is induced by disorder even topologically trivial trajectory. With 41-qubit superconducting processor, develop Floquet engineering technique to realize cycles simultaneously varying on-site potentials and hopping couplings. We demonstrate in presence show its breakdown as...
A hybrid system with tunable coupling between phonons and qubits shows great potential for advancing quantum information processing. In this work, we demonstrate strong a surface acoustic wave (SAW) resonator transmon qubit based on galvanic-contact flip-chip technique. The strength varies from $2\pi\times$7.0 MHz to -$2\pi\times$20.6 MHz, which is extracted different vacuum Rabi oscillation frequencies. phonon-induced ac Stark shift of the at strengths also shown. Our approach offers good...
A hybrid system with tunable coupling between phonons and qubits shows great potential for advancing quantum information processing. In this work, we demonstrate strong a surface acoustic wave resonator transmon qubit based on the galvanic-contact flip-chip technique. The strength varies from 2π× 7.0 to −2π× 20.6 MHz, which is extracted different vacuum Rabi oscillation frequencies. phonon-induced ac Stark shift of at strengths also shown. Our approach offers good experimental platform...
Quantum simulation of different exotic topological phases quantum matter on a noisy intermediate-scale (NISQ) processor is attracting growing interest. Here, we develop one-dimensional 43-qubit superconducting processor, named as Chuang-tzu, to simulate and characterize emergent states. By engineering diagonal Aubry-Andr$\acute{\mathrm{e}}$-Harper (AAH) models, experimentally demonstrate the Hofstadter butterfly energy spectrum. Using Floquet engineering, verify existence zero modes in...
We have proposed and experimentally verified a tunable inter-qubit coupling scheme for large-scale integration of superconducting qubits. The key feature the is insertion connecting pads between qubit element. In such way, distance two qubits can be increased considerably to few millimeters, leaving enough space arranging control lines, readout resonators other necessary structures. provides more wiring flip-chip process reduces crosstalk from lines use term Tunable Coupler with Capacitively...
Characterizing the nature of hydrodynamical transport properties in quantum dynamics provides valuable insights into fundamental understanding exotic non-equilibrium phases matter. Simulating infinite-temperature on large-scale complex systems remains an outstanding challenge. Here, using a controllable and coherent superconducting simulator, we experimentally realize analog circuit, which can efficiently prepare Haar-random states, probe spin at infinite temperature. We observe diffusive...