Entanglement of multiphoton states in polarization and quadrature variables
Mikhail Vladimirovich Fedorov · Laser Physics · 2019
Abstract A brief overview of entanglement characterization is given in the cases of biphoton and multiphoton polarization states. The importance of the approach is stressed based on the Schmidt decomposition. This method is applied to the characterization of the quadrature entanglement in two-mode multiphoton states. The fruitfulness of this approach is illustrated by a series of examples.