Monogamy of quantum steering in exciton--cavity optomechanical system

Abstract:In this work, we study a theoretical scheme to investigate the monogamy of quantum steering in a hybrid exciton--cavity optomechanical (EOM) system. Within the Gaussian-state formalism, we quantify the steerability among the exciton, photon, and mechanical modes in both the steady-state and dynamical regimes. We establish and verify CKW-type monogamy inequalities for Gaussian steering and demonstrate that the distribution of bipartite steering among the three modes can be controlled through the system parameters. We further examine the influence of thermal noise and temporal evolution on the steering properties and the corresponding monogamy relations. Our results show that increasing the temperature generally suppresses the strength of Gaussian steering and modifies the degree of steering sharing imposed by the CKW-type monogamy relations. In contrast, in the dynamical regime, the steerability can increase with evolution time over suitable temporal windows, indicating that the transient dynamics can be exploited to enhance quantum correlations. These results highlight the potential of hybrid exciton--optomechanical platforms for controllable quantum correlations and provide a promising route toward the generation and manipulation of multipartite quantum resources.

Quantum Physics (quant-ph); Other Condensed Matter (cond-mat.other); Optics (physics.optics)

arXiv:2610.15233 [quant-ph]

(or arXiv:2610.15233v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2610.15233 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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