Experimental Observation of Equilibrium and Dynamical Quantum Phase Transitions via Out-of-Time-Ordered Correlators.

@article{Nie2020ExperimentalOO,
  title={Experimental Observation of Equilibrium and Dynamical Quantum Phase Transitions via Out-of-Time-Ordered Correlators.},
  author={Xinfang Nie and Bo-Bo Wei and X. Chen and Z. Zhang and X. Zhao and Chudan Qiu and Y. Tian and Y. Ji and Tao Xin and D. Lu and Jie-shoun Li},
  journal={Physical review letters},
  year={2020},
  volume={124 25},
  pages={
          250601
        }
}
  • Xinfang Nie, Bo-Bo Wei, +8 authors Jie-shoun Li
  • Published 2020
  • Physics, Mathematics, Medicine
  • Physical review letters
  • The out-of-time-ordered correlators (OTOC), a fundamental concept for quantifying quantum information scrambling, has recently been suggested to be an order parameter to dynamically detect both equilibrium quantum phase transitions (EQPTs) and dynamical quantum phase transitions (DQPTs). Here we report the first experimental observation of EQPTs and DQPTs in a quantum spin chain via quench dynamics of OTOC on a nuclear magnetic resonance quantum simulator. We observe that the quench dynamics of… CONTINUE READING

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