Robust quantum correlations in out-of-equilibrium matter-light systems

Abstract

High precision macroscopic quantum control in interacting light-matter systems remains a significant goal toward novel information processing and ultra-precise metrology. We show that the out-of-equilibrium behavior of a paradigmatic light-matter system (Dicke model) reveals two successive stages of enhanced quantum correlations beyond the traditional schemes of near-adiabatic and sudden quenches. The first stage features magnification of matter-only and light-only entanglement and squeezing due to effective non-linear self-interactions. The second stage results from a highly entangled light-matter state, with enhanced superradiance and signatures of chaotic and highly quantum states. We show that these new effects scale up consistently with matter system size, and are reliable even in dissipative environments.

14 pages, 6 figures

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• Quantum fluctuations and correlations in open quantum Dicke models
• Nonadiabatic dynamics of the excited states for the Lipkin-Meshkov-Glick model
• Critical relaxation with overdamped quasiparticles in open quantum systems
• Robust quantum correlations in out-of-equilibrium matter-light systems
• Quantum Hysteresis in Coupled Light-Matter Systems
• Pulsed Generation of Quantum Coherences and Non-classicality in Light-Matter Systems
• Polaron-transformed dissipative Lipkin-Meshkov-Glick Model
• Wiseman-Milburn Control for the Lipkin-Meshkov-Glick Model
• Transport through a quantum critical system: A thermodynamically consistent approach
• Energy transfer in $N$-component nanosystems enhanced by pulse-driven vibronic many-body entanglement
• Dynamics of Entanglement and the Schmidt Gap in a Driven Light-Matter System