# Generation of single entangled photon-phonon pairs via an atom-photon-phonon interaction

## TL;DR

This paper proposes a method to generate entangled photon-phonon pairs using an atom-photon-phonon interaction in a hybrid optomechanical system, with potential applications in quantum networks.

## Contribution

It introduces a novel approach to produce single entangled photon-phonon pairs through tripartite interactions, observable in both weak and strong coupling regimes.

## Key findings

- Photon and phonon blockade observed
- Photon-phonon entanglement demonstrated
- Potential for quantum network applications

## Abstract

Quantum blockade and entanglement play important roles in quantum information and quantum communication as quantum blockade is an effective mechanism to generate single photons (phonons) and entanglement is a crucial resource for quantum information processing. In this work, we propose a method to generate single entangled photon-phonon pairs in a hybrid optomechanical system. We show that photon blockade, phonon blockade, and photon-phonon correlation and entanglement can be observed via the atom-photon-phonon (tripartite) interaction, under the resonant atomic driving. The correlated and entangled single photons and single phonons, i.e., single entangled photon-phonon pairs, can be generated in both the weak and strong tripartite interaction regimes. Our results may have important applications in the development of highly complex quantum networks.