Useful entanglement from the Pauli principle
arXiv:quant-ph/0608141 · doi:10.1103/PhysRevB.76.113304
Abstract
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.
5 pages, 3 figures. V2: accepted version - text improved, 4 pages, 2 figs
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