All non-local states of identical particles, or when indistinguishability is a resource

Entanglement arising from symmetrisation of the wave function in the second-quantised theory is ubiquitous, but at the same time it is severely constrained by the inability to address individual particles. This raises the question of whether it can actually be turned into a useful resource for non-local correlations observable in the laboratory. I will that this is indeed possible, using only very modest passive linear-optical means, for almost every state of identical particles.

Based on: P. Blasiak and M. Markiewicz, Identical particles as a genuine non-local resource https://doi.org/10.1038/s41534-025-01086-x, npj Quantum Inf., 11 171 (2025).