Steering Interchange of Polariton Branches via Coherent and Incoherent Dynamics

TL;DR

This paper presents a systematic method to control and manipulate polariton branches in cavity QED systems, revealing new insights into quantum phase transitions and spectral asymmetries through coherent and incoherent dynamics.

Contribution

It introduces a novel approach to control polariton interchange in non-equilibrium Jaynes-Cummings systems, advancing quantum simulation capabilities.

Findings

Controlled polariton interchange between states

Revealed transition insights between Mott Insulator and Superfluid phases

Analyzed absorption spectrum asymmetries under loss conditions

Abstract

Controlling light-matter based quantum systems in the strong coupling regime allows for exploring quantum simulation of many-body physics in nowadays architectures. For instance, the atom-field interaction in a cavity QED network provides control and scalability for quantum information processing. Here, we propose the control of single- and two-body Jaynes-Cummings systems in a non-equilibrium scenario, which allows us to establish conditions for the coherent and incoherent interchange of polariton branches. Our findings provide a systematic approach to manipulate polaritons interchange, that we apply to reveal new insights in the transition between Mott Insulator- and Superfluid-like states. Furthermore, we study the asymmetry in the absorption spectrum by triggering the cavity and atomic losses as a function of the atom-cavity detuning and photon's hopping.