Nonlinearly induced steady-state photon–phonon entanglement of a dissipative coupled system is studied in the bistable regime. Quantum dynamical characteristics are analysed by solving the mean-field and fluctuation ...Nonlinearly induced steady-state photon–phonon entanglement of a dissipative coupled system is studied in the bistable regime. Quantum dynamical characteristics are analysed by solving the mean-field and fluctuation equations of the system. It is shown that dissipative coupling can induce bistable behaviour for the effective dissipation of the system.Under suitable parameters, one of the steady states significantly reduces the dissipative effect of the system. Consequently,a larger steady-state entanglement can be achieved compared to linear dynamics. Furthermore, the experimental feasibility of the parameters is analysed. Our results provide a new perspective for the implementation of steady-state optomechanical entanglement.展开更多
Basic innovation,with universities as a key driver,is essential for advancing core technologies in the manufacturing industry.This study used a manufacturing technologies initiative as a natural experiment,combining f...Basic innovation,with universities as a key driver,is essential for advancing core technologies in the manufacturing industry.This study used a manufacturing technologies initiative as a natural experiment,combining funding and its outcomes data from the National Natural Science Foundation of China to construct a difference-in-differences model.It found that the Frontiers in Manufacturing Technologies Initiative had a positive effect on university innovation,particularly by increasing the number of university patents.Mechanism analysis showed that the policy mainly encouraged university innovation through university-industry collaboration.The effect was more salient in universities with stronger basic research capabilities and those whose research fields matched strategic emerging industries covered by the initiative.This study underscores the crucial role of the Frontiers in Manufacturing Technologies Initiative in enhancing university-led innovation.It highlights the effectiveness of industry-academia partnerships in advancing technology,particularly in emerging strategic industries.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant No. 12074206)the Natural Science Foundation of Zhejiang Province of China (Grant No.LY22A040005)supported by the National Natural Science Foundation of China (Grant No. 22103043)。
文摘Nonlinearly induced steady-state photon–phonon entanglement of a dissipative coupled system is studied in the bistable regime. Quantum dynamical characteristics are analysed by solving the mean-field and fluctuation equations of the system. It is shown that dissipative coupling can induce bistable behaviour for the effective dissipation of the system.Under suitable parameters, one of the steady states significantly reduces the dissipative effect of the system. Consequently,a larger steady-state entanglement can be achieved compared to linear dynamics. Furthermore, the experimental feasibility of the parameters is analysed. Our results provide a new perspective for the implementation of steady-state optomechanical entanglement.
基金support from the China Center for Special Economic Zone Research of Shenzhen University,Interdisciplinary Innovation Team Project for High-level University PhaseⅢConstruction of Shenzhen University(No.24JCXK02)the National Natural Science Foundation of China(No.72403167).
文摘Basic innovation,with universities as a key driver,is essential for advancing core technologies in the manufacturing industry.This study used a manufacturing technologies initiative as a natural experiment,combining funding and its outcomes data from the National Natural Science Foundation of China to construct a difference-in-differences model.It found that the Frontiers in Manufacturing Technologies Initiative had a positive effect on university innovation,particularly by increasing the number of university patents.Mechanism analysis showed that the policy mainly encouraged university innovation through university-industry collaboration.The effect was more salient in universities with stronger basic research capabilities and those whose research fields matched strategic emerging industries covered by the initiative.This study underscores the crucial role of the Frontiers in Manufacturing Technologies Initiative in enhancing university-led innovation.It highlights the effectiveness of industry-academia partnerships in advancing technology,particularly in emerging strategic industries.
