Entanglement Detection in Optical Lattices of Bosonic Atoms with Collective Measurements

Details Entanglement Detection in Optical Lattices of Bosonic Atoms with Collective Measurements Entanglement Detection in Optical Lattices of Bosonic Atoms with Collective Measurements

2003-10-06

arxiv.org/abs/quant-ph/0310039v4

Physical Review A 69, 052327 (2004)

Physics

Quantum Physics

5 pages, revtex4, no figures; changes before publication

Scientific paper

10.1103/PhysRevA.69.052327

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.

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