Detection of Spin Correlations in Optical Lattices by Light Scattering

TL;DR

This paper presents a method to detect and analyze spin correlations in atoms within optical lattices by measuring photon correlations emitted during light scattering, aiding quantum state characterization.

Contribution

It introduces a novel approach to reconstruct spin correlations in optical lattices through light scattering and photon correlation measurements.

Findings

Successfully detects spin correlations in quantum magnetic phases.

Characterizes cluster states using photon correlation measurements.

Provides a new tool for quantum state analysis in optical lattices.

Abstract

We show that spin correlations of atoms in an optical lattice can be reconstructed by coupling the system to the light, and by measuring correlations between the emitted photons. This principle is the basis for a method to characterize states in quantum computation and simulation with optical lattices. As examples, we study the detection of spin correlations in a quantum magnetic phase, and the characterization of cluster states.