Correlations: What They Tell Us About Quantum Gases


Speaker: Dr Andrew Truscott (Australian National University)
Date: 16th March 2012

The idea of single particle interference is ubiquitous throughout quantum theory.  However, in 1956, when Robert Hanbury Brown and Richard Twiss proposed the use of two particle quantum interference (two body correlations) as a method of measuring the angular size of stars their ideas were met with scepticism.  It took almost a decade, before the seminal work of Glauber showed that multiparticle interference was allowed within the framework of quantum theory, and furthermore that the most fundamental property of a quantum field, its coherence, is defined by analysing many body correlation functions.
In this talk I will explain our recent experiments in which we have used higher order correlation functions (many particle interference) to probe the properties of ultracold/degenerate atom clouds.