Deterministic generation and distribution of genuine multipartite entanglement in macroscopic acoustic resonators.

Genuine multipartite entanglement involving up to six modes was generated and transferred across macroscopic acoustic resonators with fidelities up to 0.912.

• Why it matters: Creating scalable, complex multimode entanglement is essential for advancing quantum information processing, but it remains challenging due to control and verification difficulties.
• What they did: The study involved preparing and transferring genuine multimode entangled states across two acoustic resonators, achieving fidelities of 0.912, 0.790, 0.570 for state creation and 0.785, 0.601 for transfer.
• The result: This scalable, hardware-efficient approach enables deterministic control of complex mechanical states, advancing the development of large-scale mechanical quantum networks.