Spin Squeezed Atoms: A Macroscopic Entangled Ensemble Created by Light

Abstract

We report on the experimental observation of a spin squeezed ensemble of 107 cold atoms. This macroscopic ensemble is generated via quantum state transfer from nonclassical light to atoms.Received 21 January 1999DOI:https://doi.org/10.1103/PhysRevLett.83.1319©1999 American Physical Society