Linear optical scheme to demonstrate genuine multipartite entanglement for single-particleWstates Academic Article uri icon


  • We consider the method of entanglement witness operator to verify genuine multipartite entanglement for single-particle W states involving N parties. In particular, linear optical schemes using photodetectors and beam splitters are proposed to implement two different types of witness operator in experiment. The first scheme that requires only a single measurement setting is shown to detect genuine multipartite entanglement for the overall efficiency beyond 1-1/N. On the other hand, the second scheme with N+1 measurement settings achieves success at a significantly lowered efficiency than 1-1/N. © 2008 The American Physical Society.

published proceedings

  • Physical Review A

author list (cited authors)

  • Nha, H

citation count

  • 10

complete list of authors

  • Nha, Hyunchul

publication date

  • June 2008