Coherent generation and transfer of distant Bi- and tripartite entanglement in a hybrid atom-opto-magnomechanical system

Abstract

We propose a theoretical framework for generating and transferring macroscopic bipartite and tripartite entanglement in a hybrid magnon-microwave-atom-optomechanical system. This hybrid configuration includes five coupled modes: an optical cavity, a microwave cavity, a magnon mode, a mechanical oscillator, and an ensemble of two-level atoms. Entanglement is initially generated between the optical and mechanical modes by radiation pressure and then transferred to the atom-cavities and magnon-microwave subsystems through state-swap interactions. These entangled subsystems, in turn, mediate indirect entanglement between distant modes such as the atom-phonon, phonon-microwave, phonon-magnon, atom-magnon, magnon-optical, optical-microwave pairs, as well as the atom-magnon-phonon tripartite subsystem. We show that by tuning system parameters (including detunings, coupling strengths, and dissipation rates), the strength and stability of the entanglement can be significantly improved, even in the presence of thermal noise. This work provides a promising platform for achieving robust and long-range entanglement in hybrid multi-mode systems, with potential applications in quantum information technology.