Nonreciprocal entanglement in molecular optomechanical system

• URL: http://arxiv.org/abs/2501.14045v1
• Date: Thu, 23 Jan 2025 19:23:06 GMT
• Title: Nonreciprocal entanglement in molecular optomechanical system
• Authors: K. B. Emale, Jia-Xin Peng, A. Sohail, P. Djorwe, A. -H. Abdel-Aty, N. Alessa, K. S. Nisar, S. G. Nana Engo,
• Abstract summary: We find that nonreciprocal photon-vibration entanglement and nonreciprocal vibration-vibration entanglement can exist in our system at high temperatures. Our work finds applications in quantum information transmission.
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• Abstract: We proposed a theoretical scheme to investigate how to generate the nonreciprocal bipartite entanglement between cavity mode and vibrational modes in a molecular cavity optomechanical system. Our system consists of $\mathcal{N}$ molecules within a spinning whispering-gallery-mode (WGM) resonator whose vibrations can be strongly entangled with an auxiliary cavity and plasmonic cavity. We find that nonreciprocal photon-vibration entanglement and nonreciprocal vibration-vibration entanglement can exist in our system at high temperatures. These nonreciprocal entanglements are induced by the Sagnac-Fizeau effect. The two types of nonreciprocal entanglements can be enhanced by spinning the WGM resonator in the CCW direction. This ensures that the optical photon is driven by blue-detuned driving field. Moreover, we find that the vibration-vibration entanglement can be greatly enhanced as the number of the molecules increases. Our work finds applications in quantum information transmission

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