<正> In this paper,we conduct an investigation into magnon self-squeezing states in a ferromagnet.In thesestates,the quantum fluctuations of the spin components can be lower than the zero-point quantum fluctuati...<正> In this paper,we conduct an investigation into magnon self-squeezing states in a ferromagnet.In thesestates,the quantum fluctuations of the spin components can be lower than the zero-point quantum fluctuations ofthe coherent states.Through calculating the expectation values of spin fluctuations we gain the condition of achievingmagnon self-squeezing.We introduce the mean-field theory for dealing with the nonlinear interaction term of Hamiltonianof magnon system.展开更多
基金The project supported by National Natural Science Foundation of China under Grant Nos .19847004 and 10474025
文摘<正> In this paper,we conduct an investigation into magnon self-squeezing states in a ferromagnet.In thesestates,the quantum fluctuations of the spin components can be lower than the zero-point quantum fluctuations ofthe coherent states.Through calculating the expectation values of spin fluctuations we gain the condition of achievingmagnon self-squeezing.We introduce the mean-field theory for dealing with the nonlinear interaction term of Hamiltonianof magnon system.
