A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs

A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs

Blog Article

Abstract We demonstrate a new generation mechanism for polarisation- and colour-entangled photon pairs.In our approach we Potato Mashers tailor the phase-matching of a periodically poled KTP crystal such that two downconversion processes take place simultaneously.Relying on this effect, our source emits entangled bipartite photon states, emerging intrinsically from a single, unidirectionally pumped crystal with uniform poling period.

Its property of being maximally compact and luminous at the same time makes our source unique compared to ORG QUICK ROLLED OATS existing photon-entanglement sources and is therefore of high practical significance in quantum information experiments.