Floquet Prethermal Phase Protected by U(1) Symmetry on a Superconducting Quantum Processor

Abstract

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' symmetries, such as global $U(1)$ symmetry, can even show dynamical stability with symmetry-protection. Here we experimentally demonstrate a $U(1)$ symmetry-protected prethermal phase, via performing a digital-analog quantum simulation on a superconducting quantum processor. The dynamical stability of this phase is revealed by its robustness against external perturbations. We also find that the spin glass order parameter in this phase is stabilized by the interaction between the spins. Our work reveals a promising prospect in discovering emergent quantum dynamical phases with digital-analog quantum simulators.

14 pages, 4 figures, and supplementary materials

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Cited by in corpus (14)

• Suppression of crosstalk in superconducting qubits using dynamical decoupling
• Observation of a symmetry-protected topological time crystal with superconducting qubits
• Long-lived topological time-crystalline order on a quantum processor
• Dynamical quantum phase transitions in a noisy lattice gauge theory
• Time Crystal in a Single-mode Nonlinear Cavity
• Fractional resonances and prethermal states in Floquet systems
• Superconducting Quantum Simulation for Many-Body Physics beyond Equilibrium
• Steering spin fluctuations in lattice systems via two-tone Floquet engineering
• Floquet Amorphous Topological Orders in a One-dimensional Rydberg Glass
• Tunable quantum interference effects in Floquet two- and three-level systems
• Stable many-body resonances in open quantum systems
• Quantum simulation of quantum mechanical system with spatial noncommutativity
• Discrete time crystals enhanced by Stark potentials in Rydberg atom arrays
• Ancilla assisted Discrete Time Crystals in Non-interacting Spin Systems