Fabrication of the Photon-depleted Squeezed Vacuum States and Associated Squeezing Effects

A kind of new quantum states is fabricated by acting on the squeezed vacuum state with the operator +-1 and the squeezing effects of the two quadrature components of the states are discussed.The results show that the squeezing characteristic of the quantum states are correlated with the times of the operator act on the squeezed vacuum state.The two quadrature components of the states produce the squeezing effects in different range of the squeezing parameter η respectively when the operator +-1 act on the squeezed vacuum state one time only as well as for all the even times.The squeezing effects gradually weaken when the times of the operator act on the squeezed vacuum state added.