Entanglement of Indistinguishable Particles Shared between Two Parties
Abstract
Using an operational definition we quantify the entanglement, EP, between two parties who share an arbitrary pure state of N indistinguishable particles. We show that EP=EM, where EM is the bipartite entanglement calculated from the mode-occupation representation. Unlike EM, EP is superadditive. For example, EP=0 for any single-particle state, but the state |1?|1?, where both modes are split between the two parties, has EP=1/2. We discuss how this relates to quantum correlations between particles, for both fermions and bosons.Using an operational definition we quantify the entanglement, EP, between two parties who share an arbitrary pure state of N indistinguishable particles. We show that EP=EM, where EM is the bipartite entanglement calculated from the mode-occupation representation. Unlike EM, EP is superadditive. For example, EP=0 for any single-particle state, but the state |1?|1?, where both modes are split between the two parties, has EP=1/2. We discuss how this relates to quantum correlations between particles, for both fermions and bosons.
View less >
View less >
Journal Title
Physical Review Letters
Volume
91
Issue
9
Publisher URI
Copyright Statement
© 2003 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal link for access to the definitive, published version.
Subject
Mathematical sciences
Physical sciences
Engineering