April 22 2013

New article: Phys. Rev. A 87, 044301 (2013)

Entanglement detection by Bragg scattering
C. Macchiavello and G. Morigi
Phys. Rev. A 87, 044301 (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.

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