Enhancing tripartite photon-phonon-magnon entanglement by synergizing parametric amplifications

• URL: http://arxiv.org/abs/2412.18732v1
• Date: Wed, 25 Dec 2024 01:35:12 GMT
• Title: Enhancing tripartite photon-phonon-magnon entanglement by synergizing parametric amplifications
• Authors: Yan Wang, Jin-Lei Wu, Ya-Feng Jiao, Tian-Xiang Lu, Hui-Lai Zhang, Li-Ying Jiang, Le-Man Kuang, Hui Jing,
• Abstract summary: Tripartite entanglement as a remarkable resource in quantum information science has been extensively investigated in hybrid quantum systems. We propose how to enhance the tripartite entanglement by exploiting a synergistic effect of the optical parametric amplification (OPA) and mechanical parametric amplification (MPA) Our work provides a promising method for manipulating the entanglement with easy tunability and may serve as a useful tool for the enhancement and protection of fragile quantum resources.
• Score: 3.3510191261319036
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• Abstract: Tripartite entanglement as a remarkable resource in quantum information science has been extensively investigated in hybrid quantum systems, whereas it is generally weak and prone to be suppressed by noise, restricting its practical application in quantum technologies. Here, we propose how to enhance the tripartite entanglement among magnons, photons and phonons in a hybrid cavity-magnon optomechanical system by exploiting a synergistic effect of the optical parametric amplification (OPA) and mechanical parametric amplification (MPA). We find that in the case of individually applying the OPA or MPA, the tripartite entanglement can be enhanced by several folds. Remarkably, upon suitably tuning the phase matching of the two parametric fields presented simultaneously, the strengths of the entanglement can be further enhanced due to the constructive interference between the OPA and MPA. We also show that our method can improve the robustness of the entanglement against thermal noise. Our work provides a promising method for manipulating the entanglement with easy tunability and may serve as a useful tool for the enhancement and protection of fragile quantum resources.

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