Controlling the dynamics of atomic correlations via the coupling to a dissipative cavity

Abstract

We analyze the relaxation dynamics in an open system, composed by a quantum gas of bosons in a lattice interacting via both contact and global interactions. We report the onset of periodic oscillations of the atomic coherences exhibiting hallmarks of synchronization after a quantum quench. The dynamical behavior exhibits the many-body collapse and revival of atomic coherences and emerges from the interplay of the quantum dissipative nature of the cavity field and the presence of a (approximate) strong symmetry in the dissipative system. We further show that the approximate symmetry can dynamically self-organize. We argue that the approximate symmetry can be tailored to obtain long-lived coherences. These insights provide a general recipe to engineer the dynamics of globally-interacting systems.

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• Master Equation for a Quantum Gas of Polarizable Particles in Cavities
• Few-Photon Fluorescence from Ultracold Bosons in an Optical Cavity
• Dissipative Generation of Currents by Nonreciprocal Local and Global Environments