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Useful entanglement from the Pauli principle

Daniel Cavalcanti·L. M. Moreira·Franklin Matinaga·Marcelo O. Terra Cunha·Marcelo Franca Santos
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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.

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Daniel Cavalcanti, L. M. Moreira, Franklin Matinaga, Marcelo O. Terra Cunha, Marcelo Franca Santos. 2007-09-29. Useful entanglement from the Pauli principle. https://doi.org/10.1103/physrevb.76.113304

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