Characterizing the Entanglement in an Optical System
Jeffrey Hyde · OhioLink ETD Center (Ohio Library and Information Network) · 2009
Quasiprobability distributions, entanglement measures and correlation functions all give information about entanglement in a quantum state.We are studying these with the goal of using this knowledge to experimentally determine the presence and type of entanglement.The approach we take is to study a well-known system, an optical parametric oscillator (OPO), which consists of a crystal with a χ (2) nonlinearity within an optical cavity.A 50-50 beamsplitter is placed in front of one of the OPO's output modes.We simulate its time evolution, calculating entanglement measures, correlation functions and quasiprobability distributions.These are used to characterize the entangled states it produces.The use of this entanglement for teleportation of a quantum state is also considered.