2003/10/31 by Geza Toth, G. Tóth · 2 citations
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #Quantum Mechanics and Applications #cond-mat #quant-ph
paper · pdf · doi:10.1103/physreva.69.052327
published as Physical Review A 69, 052327 (2004) · 5 pages, revtex4, no figures; changes before publication
openalex publication_date 2004/05/24 · arxiv created 2004/05/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The minimum requirements for entanglement detection are discussed for a spin chain in which the spins cannot be individually accessed. The methods presented detect entangled states close to a cluster state and a many-body singlet state, and seem to be viable for experimental realization in optical lattices of two-state bosonic atoms. The entanglement criteria are based on entanglement witnesses and on the uncertainty of collective observables.