Entanglement generation in continuously coupled parametric generators
Jiří Herec, Jaromı́r Fiurášek, Ladislav Mišta · Journal of Optics B Quantum and Semiclassical Optics · 2003
We investigate a compact source of entanglement. This device is composed of a pair of linearly coupled nonlinear waveguides operating by means of degenerate parametric downconversion. For the vacuum state at the input the generalized squeeze variance and logarithmic negativity are used to quantify the amount of nonclassicality and entanglement of output beams. Squeezing and entanglement generation for various dynamical regimes of the device are discussed. The influence of losses is investigated in detail.