Continuous Variable Tripartite Entanglement from Twin Nonlinearities


In this work, we analyse and compare the continuous variable tripartite entanglement available from the use of two concurrent or cascaded χ(2) nonlinearities. We examine both idealized travelling-wave models and more experimentally realistic intracavity models, showing that tripartite entangled outputs are readily producible. These may be a useful resource for applications such as quantum cryptography and teleportation.

Journal of Physics B: Atomic, Molecular and Optical Physics