The entanglement of indistinguishable particles shared between two parties

2002/10/31 by H. M. Wiseman, John A. Vaccaro · 1 citation
Physics and Astronomy · #quant-ph

paper · pdf · doi:10.1103/physrevlett.91.097902

published as Phys. Rev. Lett. {\bf 91}, 097902 (2003) · 4 + epsilon pages. No figures. This published version is slightly modified from the original

arxiv created 2003/08/27 · arxiv updated 2009/12/01

Abstract

Using an operational definition we quantify the entanglement, E_P, between two parties who share an arbitrary pure state of N indistinguishable particles. We show that E_P ≤ E_M, where E_M is the bipartite entanglement calculated from the mode-occupation representation. Unlike E_M, E_P is \em super-additive. For example, E_P =0 for any single-particle state, but the state \ket1\ket1, where both modes are split between the two parties, has E_P = 1/2. We discuss how this relates to quantum correlations between particles, for both fermions and bosons.

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