Preparation of entangled states with linear optical interferometers

The lecture will outline a model of photon interference in a linear optical scheme. The method of preparation of entangled two-qubit Bell states will be considered, as well as preparation of two-qubit states with parameterized entanglement. In the case of preparation of one of the 4 Bell states, the probability of preparation of 4 single photons 1/9 was demonstrated, which is 50