Entanglement of identical particles and reference phase uncertainty
| dc.creator | Vaccaro, John A. | |
| dc.creator | Anselmi, Fabio | |
| dc.creator | Wiseman, Howard M. | |
| dc.date | 2003-11-06 | |
| dc.date | 2004-02-17 | |
| dc.date.accessioned | 2026-07-07T06:08:15Z | |
| dc.date.available | 2026-07-07T06:08:15Z | |
| dc.description | We have recently introduced a measure of the bipartite entanglement of identical particles, E_P, based on the principle that entanglement should be accessible for use as a resource in quantum information processing. We show here that particle entanglement is limited by the lack of a reference phase shared by the two parties, and that the entanglement is constrained to reference-phase invariant subspaces. The super-additivity of E_P results from the fact that this constraint is weaker for combined systems. A shared reference phase can only be established by transferring particles between the parties, that is, with additional nonlocal resources. We show how this nonlocal operation can increase the particle entanglement. | |
| dc.description | 8 pages, no figures. Invited talk given at EQIS'03, Kyoto, September, 2003. Minor typos corrected, 1 reference added | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0311028 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0311028 | |
| dc.identifier | International Journal of Quantum Information, Vol. 1, No. 4 (2003) 427-441 | |
| dc.identifier | doi:10.1142/S0219749903000346 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/91564 | |
| dc.subject | Quantum Physics | |
| dc.title | Entanglement of identical particles and reference phase uncertainty | |
| dc.type | text |