Coherent Atom-Phonon Interaction through Mode Field Coupling in Hybrid Optomechanical Systems

TL;DR

This paper introduces a new mode field coupling mechanism in hybrid optomechanical systems, enabling tripartite interactions among a quantum emitter, optical mode, and mechanical oscillator, with potential for quantum state control and cooling.

Contribution

It proposes a novel mode field coupling approach that facilitates strong atom-phonon interactions and quantum state manipulation in multimode optomechanical systems.

Findings

Achieves atom-phonon coupling via mode field coupling.

Enables quantum state swapping and nonclassical state creation.

Allows mechanical ground-state cooling in the bad-cavity regime.

Abstract

We propose a novel type of optomechanical coupling which enables a tripartite interaction between a quantum emitter, an optical mode and a macroscopic mechanical oscillator. The interaction uses a mechanism we term mode field coupling: mechanical displacement modifies the spatial distribution of the optical mode field, which in turn modulates the atom-photon coupling rate. In properly designed multimode optomechanical systems, we can achieve situations in which mode field coupling is the only possible interaction pathway for the system. This enables, for example, swapping of a single excitation between emitter and phonon, creation of nonclassical states of motion and mechanical ground-state cooling in the bad-cavity regime. Importantly, the emitter-phonon coupling rate can be enhanced through an optical drive field, allowing active control of strong atom-phonon coupling for realistic experimental parameters.