Higher-order amplitude squeezing
Evgeny V Shchukin, W. Vogel · Journal of Physics Conference Series · 2006
A brief review of nonclassicality conditions in terms of moments of the creation and annihilation operators is given. By introducing k -th power amplitude squeezing, the notions of ordinary quadrature squeezing and amplitude-squared squeezing are generalized. Minimum uncertainty states are considered as a special class of k -th power amplitude squeezed states. These states can be characterized by a special, rather simple nonclassicality condition.