Details

Autor(en) / Beteiligte

• Cunha, Marcelo O. Terra
• Dunningham, Jacob A
• Vedral, Vlatko

Titel

Entanglement in single-particle systems

Ist Teil von

• Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences, 2007-09, Vol.463 (2085), p.2277-2286

Ort / Verlag

London: The Royal Society

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We address some of the most commonly raised questions about entanglement, especially with regard to the so-called occupation number entanglement. To answer unambiguously whether entanglement can exist in a one-atom delocalized state, we propose an experiment capable of showing violations of Bell's inequality using only this state and local operations. We review previous discussions for one-photon non-locality and propose a specific experiment for creating one-atom entangled states, showing that the superselection rule of atom number can be overcome. As a by-product, this experiment suggests a means of creating an entangled state of two different chemical species. By comparison with a massless system, we argue that there should be no fundamental objection to such a superposition and its creation may be within reach of present technology.