Floquet engineered inhomogeneous quantum chaos in critical systems

• URL: http://arxiv.org/abs/2405.01642v1
• Date: Thu, 2 May 2024 18:04:39 GMT
• Title: Floquet engineered inhomogeneous quantum chaos in critical systems
• Abstract summary: We study universal chaotic dynamics of periodically driven critical systems described by spatially inhomogeneous conformal field theories. We show that the onset of quantum chaotic correlations, captured by the Lyapunov exponent of out-of-time-order correlators (OTOCs), is set by the Hawking temperature of emergent Floquet horizons.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study universal chaotic dynamics of a large class of periodically driven critical systems described by spatially inhomogeneous conformal field theories. By employing an effective curved spacetime approach, we show that the onset of quantum chaotic correlations, captured by the Lyapunov exponent of out-of-time-order correlators (OTOCs), is set by the Hawking temperature of emergent Floquet horizons. Furthermore, scrambling of quantum information is shown to be strongly inhomogeneous, leading to transitions from chaotic to non-chaotic regimes by tuning driving parameters. We finally use our framework to propose a concrete protocol to simulate and measure OTOCs in quantum simulators, by designing an efficient stroboscopic backward time evolution.

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