Useful entanglement from the Pauli principle
  We address the question whether identical-particle entanglement is a useful resource for quantum information processing. We answer this question positively by reporting a scheme to create entanglement using semiconductor quantum wells. The Pauli exclusion principle forces quantum correlations between the spins of two independent fermions in the conduction band. Selective electron-hole recombination then transfers this entanglement to the polarization of emitted photons, which can subsequently be used for quantum information tasks. 
Daniel Cavalcanti, L. M. Moreira, Franklin Matinaga, Marcelo O. Terra   Cunha, and Marcelo Franca Santos