Comparison of nonclassicality between photon-added and photon-subtracted squeezed vacuum states

In this paper,we introduce photon-added and photon-subtracted squeezed vacuum state (PASV and PSSV) and obtain their normalized factors,which have the similar forms involved in Lengendre polynomials.Moreover,we give the compact expressions of Wigner function,which are related to single-variable Hermite polynomials.Especially,we compare their nonclassicality in terms of Mandel Q-factor and the negativity of Wigner function.