Nonclassicality of photon-added squeezed vacuum states

By applying the bosonic creation operator to squeezedvacuum states, this paper introduces a new kind of quantum states:photon-added squeezed vacuum states. It also presents anexperimental approach to prepare these states, and investigatestheir quantum statistical properties by the numerical method. Theresults indicate that these states reveal some interestingnon-classical properties, such as anti-bunching effects,squeezing effects and negativities of the relevant Wignerfunctions.