QUANTUM STATISTIC PROPERTIES OF SUPERPOSITION OF THE EXCITED TWO-MODE SQUEEZED VACUUM STATES
叠加激发双模压缩真空态的量子统计特性

The superposition state from the excited two mode squeezed vacuum states is constructed,and its nonclassical properties are studied.Under certain conditions,as the phase difference changes,the mean photon number of the superposition state exhibits oscillating phenomenon of collapses and revivals in a manner similar to that of Rabi oscillation,sub Poissonian photon statistical character and phase squeezing of the field in the superposition states are stronger than ones in the single excited two mode squeezed vacuum state.