Entanglement detection by Bragg scattering
Chiara Macchiavello, Giovanna Morigi · Physical Review A · 2013
We show how to measure the structural witnesses proposed previously [P. Krammer et al., Phys. Rev. Lett. 103, 100502 (2009)] for detecting entanglement in a spin chain using photon scattering. The procedure allows one to measure the two-point correlation function of the spin array. This proposal could be performed in existing experimental platforms, realizing ion chains in Paul traps or atomic arrays in optical lattices.