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Many-region vacuum entanglement: Distilling a W state by Silman, J.; Reznik, B. is a scholarly article available to read on EtoBox.

What is Many-region vacuum entanglement: Distilling a W state about?

We investigate the correlations between any number of arbitrarily far-apart regions of the vacuum of the free Klein-Gordon field by means of its finite duration coupling to an equal number of localized detectors. We show that the correlations between any N such regions enable us to distill an N-partite W state, and therefore exhibit true $N$-fold entanglement. Furthermore, we show that for N=3, the correlations cannot be reproduced by a hybrid local-nonlocal hidden-variable model. For N >= 4 the issue remains open.

Author

Silman, J.; Reznik, B.

Published

2005

Language

EN