Nonreciprocal entanglement in a molecular optomechanical system
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arXiv
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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866916766745100288 |
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| author | Berinyuy, E. Kongkui Peng, Jia-Xin Sohail, A. Djorwe, P. Abdel-Aty, A. -H. Alessa, N. Nisar, K. S. Engo, S. G. Nana |
| author_facet | Berinyuy, E. Kongkui Peng, Jia-Xin Sohail, A. Djorwe, P. Abdel-Aty, A. -H. Alessa, N. Nisar, K. S. Engo, S. G. Nana |
| contents | We propose a theoretical scheme to generate nonreciprocal bipartite entanglement between a cavity mode and vibrational modes in a molecular cavity optomechanical system. Our system consists of $\mathcal{N}$ molecules placed inside a spinning whispering-gallery-mode (WGM) resonator. The vibrational modes of these molecules are coupled to the WGM resonator mode (which is analogous to a plasmonic cavity) and the resonator is also coupled to an auxiliary optical cavity. We demonstrate that nonreciprocal photon-vibration entanglement and nonreciprocal vibration-vibration entanglement can be generated in this system, even at high temperatures. These nonreciprocal entanglements arise due to the Sagnac-Fizeau effect induced by the spinning WGM resonator. We find that spinning the WGM resonator in the counter-clockwise (CCW) direction enhances both types of nonreciprocal entanglement, especially under blue-detuned driving of the optical cavity mode. Furthermore, we show that vibration-vibration entanglement can be significantly enhanced by increasing the number of molecules. Our findings have potential applications in quantum information transmission and in the development of nonreciprocal quantum devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14045 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nonreciprocal entanglement in a molecular optomechanical system Berinyuy, E. Kongkui Peng, Jia-Xin Sohail, A. Djorwe, P. Abdel-Aty, A. -H. Alessa, N. Nisar, K. S. Engo, S. G. Nana Quantum Physics We propose a theoretical scheme to generate nonreciprocal bipartite entanglement between a cavity mode and vibrational modes in a molecular cavity optomechanical system. Our system consists of $\mathcal{N}$ molecules placed inside a spinning whispering-gallery-mode (WGM) resonator. The vibrational modes of these molecules are coupled to the WGM resonator mode (which is analogous to a plasmonic cavity) and the resonator is also coupled to an auxiliary optical cavity. We demonstrate that nonreciprocal photon-vibration entanglement and nonreciprocal vibration-vibration entanglement can be generated in this system, even at high temperatures. These nonreciprocal entanglements arise due to the Sagnac-Fizeau effect induced by the spinning WGM resonator. We find that spinning the WGM resonator in the counter-clockwise (CCW) direction enhances both types of nonreciprocal entanglement, especially under blue-detuned driving of the optical cavity mode. Furthermore, we show that vibration-vibration entanglement can be significantly enhanced by increasing the number of molecules. Our findings have potential applications in quantum information transmission and in the development of nonreciprocal quantum devices. |
| title | Nonreciprocal entanglement in a molecular optomechanical system |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2501.14045 |