Effect of inter-particle interaction in a free oscillation atomic interferometer

TL;DR

This paper explores how inter-particle interactions influence the creation of strongly correlated quantum states, including NOON states, in a free oscillation atomic interferometer, highlighting potential for quantum metrology enhancements.

Contribution

It demonstrates that varying inter-particle interactions and beam-splitter probabilities can generate a wide range of correlated states, including NOON states, in a simple interferometer setup.

Findings

Generation of NOON states through controlled interactions

Wide range of correlated quantum states achievable

Implications for quantum metrology

Abstract

We investigate the dynamics of two interacting bosons repeatedly scattering off a beam-splitter in a free oscillation atom interferometer. Using the inter-particle scattering length and the beam splitter probabilites as our control parameters, we show that even in a simple setup like this a wide range of strongly correlated quantum states can be created. This in particular includes the NOON state, which maximizes the quantum Fisher information and is a foremost state in quantum metrology.