Observation of three-particle entanglement

Matthew Daniell

Dik Bouwmeester

Jian-Wei Pan

Harald Weinfurter

Anton Zeilinger

pp. 239-243

in: Daniel Greenberger, Anton Zeilinger (eds), Epistemological and experimental perspectives on quantum physics, Berlin, Springer, 1999

Abstract

We present here the experimental setup used to observe a three particle entangled state. Such a state is interesting from a both a fundamental and technological point of view. When used together with the GHZ (Greenberger, Horne and Zeilinger) argument, it provides a non-statistical test of the existence of elements of reality. Or, by itself it is also an important tool in many quantum information schemes such as cryptography and computing.