This paper studies how random phase （namely, noise-perturbed phase） effects the dynamical behaviours of a simple model of power system which operates in a stable regime far away from chaotic behaviour in the absence...This paper studies how random phase （namely, noise-perturbed phase） effects the dynamical behaviours of a simple model of power system which operates in a stable regime far away from chaotic behaviour in the absence of noise. It finds that when the phase perturbation is weak, chaos is absent in power systems. With the increase of disturbed intensity σ, power systems become unstable and fall into chaos as σ further increases. These phenomena imply that random phase can induce and enhance chaos in power systems. Furthermore, the possible mechanism behind the action of random phase is addressed.展开更多
Chirped random-phase gratings are designed to produce experimentally a super-bunched focusing effect with a high bunching peak value of g(2)(0)=15.38±0.05 and a high visibility of 92.5%,greatly surpassing the the...Chirped random-phase gratings are designed to produce experimentally a super-bunched focusing effect with a high bunching peak value of g(2)(0)=15.38±0.05 and a high visibility of 92.5%,greatly surpassing the theoretical bunching peak of 2 of thermal light.Both slit-width-chirped and period-chirped random-phase gratings are studied theoretically and experimentally.The full width at half-maximum of the super-bunched curve decreases significantly with an increase in the slit number,focusing the photon pairs within a decreasing spot size.This super-bunched focusing effect can be useful for improving the resolution and the visibility of the correlation image simultaneously.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 10862001,10947011 and 70571017)
文摘This paper studies how random phase （namely, noise-perturbed phase） effects the dynamical behaviours of a simple model of power system which operates in a stable regime far away from chaotic behaviour in the absence of noise. It finds that when the phase perturbation is weak, chaos is absent in power systems. With the increase of disturbed intensity σ, power systems become unstable and fall into chaos as σ further increases. These phenomena imply that random phase can induce and enhance chaos in power systems. Furthermore, the possible mechanism behind the action of random phase is addressed.
基金National Natural Science Foundation of China(91750204,11774182,61475077)Higher Education Discipline Innovation Project(B07013)Fundamental Research Funds for the Central Universities。
文摘Chirped random-phase gratings are designed to produce experimentally a super-bunched focusing effect with a high bunching peak value of g(2)(0)=15.38±0.05 and a high visibility of 92.5%,greatly surpassing the theoretical bunching peak of 2 of thermal light.Both slit-width-chirped and period-chirped random-phase gratings are studied theoretically and experimentally.The full width at half-maximum of the super-bunched curve decreases significantly with an increase in the slit number,focusing the photon pairs within a decreasing spot size.This super-bunched focusing effect can be useful for improving the resolution and the visibility of the correlation image simultaneously.
