Taming identical particles for discerning the genuine non-locality
arXiv:2002.03784 · doi:10.1007/s11128-021-03024-0
Abstract
This work provides a comprehensive approach to analyze the entanglement between subsystems generated by identical particles, based on the symmetric/exterior algebra (SEA) and microcausality. Our method amends the no-labeling approach (NLA) to quantify any type of identical particles' entanglement, especially fermions with the parity superselection rule. We can analyze the non-local properties of identical particles' states in a fundamentally equivalent way to those for non-identical particles, which is achieved by the factorizability of the total Hilbert space of identical particles. This formal correspondence between identical and non-identical particle systems turns out to be useful for quantifying the non-locality generated by identical particles, such as the maximal CHSH inequality violation and the GHJW theorem of identical particles.
arXiv commentREVTeX, 8 pages,; (v2) minor corrections and clarifications; (v3) 12 pages, substantial revision with a new author; (v4) explains the correction of partial trace defined in no-labeling approach (NLA); (v5) close to the accepted version to Quantum Information Processing
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