Observation of critical phase transition in a generalized Aubry-André-Harper model on a superconducting quantum processor with tunable couplers

  1. Hao Li,
  2. Yong-Yi Wang,
  3. Yun-Hao Shi,
  4. Kaixuan Huang,
  5. Xiaohui Song,
  6. Gui-Han Liang,
  7. Zheng-Yang Mei,
  8. Bozhen Zhou,
  9. He Zhang,
  10. Jia-Chi Zhang,
  11. Shu Chen,
  12. Shiping Zhao,
  13. Ye Tian,
  14. Zhan-Ying Yang,
  15. Zhongcheng Xiang,
  16. Kai Xu,
  17. Dongning Zheng,
  18. and Heng Fan
Quantum simulation enables study of many-body systems in non-equilibrium by mapping to a controllable quantum system, providing a new tool for computational intractable problems. Here,

Observation of dynamical quantum phase transition by a superconducting qubit simulation

  1. Xue-Yi Guo,
  2. Chao Yang,
  3. Yu Zeng,
  4. Yi Peng,
  5. He-Kang Li,
  6. Hui Deng,
  7. Yi-Rong Jin,
  8. Shu Chen,
  9. Dongning Zheng,
  10. and Heng Fan
A dynamical quantum phase transition can occur in time evolution of sudden quenched quantum systems across phase transition. It corresponds to nonanalytic behavior at a critical time

Topological edge states and pumping in a chain of coupled superconducting qubits

  1. Xiu Gu,
  2. Shu Chen,
  3. and Yu-xi Liu
Topological insulators have inspired the study with various quantum simulators. Exploiting the tunability of the qubit frequency and qubit-qubit coupling, we show that a superconducting