Experimental Multiparticle Entanglement Swapping for Quantum Networking
Abstract
This Letter reports the first experimental demonstration of Greenberger-Horne-Zeilinger (GHZ) entanglement swapping. We start with three pairs of entangled photons. Upon projection of three single photons, each from an entangled pair, into a GHZ state, the other three originally independent photons are entangled in a GHZ state—creation of multiparticle entanglement without any direct interaction. This scheme may facilitate networks for quantum telephone exchange, multiparty quantum communication and distributed quantum computation.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 2009
- DOI:
- Bibcode:
- 2009PhRvL.103b0501L
- Keywords:
-
- 03.67.Bg;
- 03.67.Mn;
- 42.50.Ex;
- 42.50.Xa;
- Entanglement production and manipulation;
- Entanglement production characterization and manipulation;
- Optical implementations of quantum information processing and transfer;
- Optical tests of quantum theory