摘要: In this chapter we outline the central arguments and themes of thesis. Specifically, briefly discuss well-known EPR paradox related Bell inequalities. The remainder is devoted to an introduction key physical systems theoretical techniques used in particular, cover processes spontaneous four-wave mixing spin-changing collisions (spinor) Bose-Einstein condensates. We also Wigner positive P phase-space representation quantum mechanics give a detailed discussion how these representations can be stochastically simulate large multi-mode systems.