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Full tunability and quantum coherent dynamics of a driven multilevel system
Yuan Zhou, Sisi Gu, Ke Wang +5
Tunability of an artificial quantum system is crucial to its capability to process quantum information. However, tunability usually poses significant demand on the design and fabri…
Realization of high-fidelity CZ gates in extensible superconducting qubits design with a tunable coupler
Yangsen Ye, Sirui Cao, Yulin Wu +20
High-fidelity two-qubits gates are essential for the realization of large-scale quantum computation and simulation. Tunable coupler design is used to reduce the problem of parasiti…
Quantum Computational Advantage via 60-Qubit 24-Cycle Random Circuit Sampling
Qingling Zhu, Sirui Cao, Fusheng Chen +50
To ensure a long-term quantum computational advantage, the quantum hardware should be upgraded to withstand the competition of continuously improved classical algorithms and hardwa…
Floquet Prethermal Phase Protected by U(1) Symmetry on a Superconducting Quantum Processor
Chong Ying, Qihao Guo, Shaowei Li +22
Periodically driven systems, or Floquet systems, exhibit many novel dynamics and interesting out-of-equilibrium phases of matter. Those phases arising with the quantum systems' sym…
Perspective on witnessing entanglement in hybrid quantum systems
Yingqiu Mao, Ming Gong, Kae Nemoto +2
Hybrid quantum systems aim at combining the advantages of different physical systems and to produce novel quantum devices. In particular, the hybrid combination of superconducting…
Strong quantum computational advantage using a superconducting quantum processor
Yulin Wu, Wan-Su Bao, Sirui Cao +51
Scaling up to a large number of qubits with high-precision control is essential in the demonstrations of quantum computational advantage to exponentially outpace the classical hard…
Unveiling non-Abelian statistics of vortex Majorana bound states in iron-based superconductors using fermionic modes
Ming Gong, Yijia Wu, Hua Jiang +2
Motivated by the recent experiments that reported the discovery of vortex Majorana bound states (vMBSs) in iron-based superconductors, we establish a portable scheme to unveil the…
Minimal setup for non-Abelian braiding of Majorana zero modes
Jie Liu, Wenqin Chen, Ming Gong +2
Braiding Majorana zero modes (MZMs) is the key procedure toward topological quantum computation. However, the complexity of the braiding manipulation hinders its experimental reali…
Quantum deleting and cloning in a pseudo-unitary system
Yucheng Chen, Ming Gong, Peng Xue +2
In conventional quantum mechanics, quantum no-deleting and no-cloning theorems indicate that two different and nonorthogonal states cannot be perfectly and deterministically delete…
Ruling out real-valued standard formalism of quantum theory
Ming-Cheng Chen, Can Wang, Feng-Ming Liu +13
Standard quantum theory was formulated with complex-valued Schrodinger equations, wave functions, operators, and Hilbert spaces. Previous work attempted to simulate quantum systems…
Observation of strong and weak thermalization in a superconducting quantum processor
Fusheng Chen, Zheng-Hang Sun, Ming Gong +22
We experimentally study the ergodic dynamics of a 1D array of 12 superconducting qubits with a transverse field, and identify the regimes of strong and weak thermalization with dif…
Quantum walks on a programmable two-dimensional 62-qubit superconducting processor
Ming Gong, Shiyu Wang, Chen Zha +33
Quantum walks are the quantum mechanical analogue of classical random walks and an extremely powerful tool in quantum simulations, quantum search algorithms, and even for universal…
Observation of thermalization and information scrambling in a superconducting quantum processor
Qingling Zhu, Zheng-Hang Sun, Ming Gong +22
Understanding various phenomena in non-equilibrium dynamics of closed quantum many-body systems, such as quantum thermalization, information scrambling, and nonergodic dynamics, is…