Probing non-equilibrium topological order on a quantum processor

Understand

Out-of-equilibrium phases in many-body systems constitute a new paradigm in quantum matter - they exhibit dynamical properties that may otherwise be forbidden by equilibrium thermodynamics.

• Among these non-equilibrium phases are periodically driven (Floquet) systems [1-5], which are generically difficult to simulate classically because of their high entanglement.
• Here we realize a Floquet topologically ordered state theoretically proposed in ref.
• [6], on an array of superconducting qubits.