Tunable Optical Response and Fast (Slow) Light in Optomechanical System with Phonon Pump

Singh, Shailendra Kumar; Parvez, M. Sultan; Abbas, Talib M.; Peng, Jiaxin; Mazaheri, Mehdi; Asjad, Muhammad Imran

doi:10.2139/ssrn.3988019

Cited by 1 publication

(1 citation statement)

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“…Notably, cavity optomechanics (COM) [2,3], highlights the complex interaction between electromagnetic fields and mechanical motion through radiation pressure, and thereby presents a possibility of creating macroscopic quantum states. Over the past decade, considerable advancements have been carried out in optomechanical systems to generate macroscopic quantum states in massive mechanical oscillators [4,5]. These achievements incorporate the successful realization of finding entangled states involving both mechanical oscillators and electromagnetic fields [6], as well as entangled states between two mechanical oscillators [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Generation of entanglement and quantum steering via Josephson parametric amplifier in a dual cavity-magnon system

Hidki,

Lakhfif,

Nassik

et al. 2024

Phys. Scr.

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In the two microwave (MW) cross-shaped cavity magnon system, we describe a method to produce multipartite entanglement and quantum steering. To achieve squeezed states of the magnons, a Josephson parametric amplifier (JPA) creates a squeezed vacuum field that drives the two cavities. We theoretically demonstrate that the cavity-cavity entanglement can be generated at the resonance point, however, increasing the cavity and magnon decay rates generate the cavity-magnon entanglement. By changing the squeezing parameter and increasing the decay rates, we can transfer the cavity-cavity entanglement to cavity-magnon entanglement. Furthermore, the cavity-cavity entanglement (survive up to 2.8K) was not only found to be much stronger but also more robust as compared to cavity-magnon entanglement (survive up to 0.4K). More importantly, the genuine photon-magnon-photon tripartite entanglement could be achieved, which is robust against thermal fluctuations and depends strongly on the squeezing parameter. Furthermore, for the current dual cavity-magnon system, two-way quantum steering is found when the optomagnonical couplings are equal. The current study offers a straightforward and practical method for achieving multipartite quantum correlations.

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