Experimental Analysis of a Four-Qubit Photon Cluster State
Abstract
Linear-optics quantum logic operations enabled the observation of a four-photon cluster state. We prove genuine four-partite entanglement and study its persistency, demonstrating remarkable differences from the usual Greenberger-Horne-Zeilinger (GHZ) state. Efficient analysis tools are introduced in the experiment, which will be of great importance in further studies on multiparticle entangled states.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 2005
- DOI:
- arXiv:
- arXiv:quant-ph/0508128
- Bibcode:
- 2005PhRvL..95u0502K
- Keywords:
-
- 03.67.Mn;
- 03.65.Ud;
- 03.67.Hk;
- Entanglement production characterization and manipulation;
- Entanglement and quantum nonlocality;
- Quantum communication;
- Quantum Physics
- E-Print:
- 5 pages, 4 figures, submitted