Experimental realization of a three-qubit entangled W state |
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| Authors: | Eibl Manfred Kiesel Nikolai Bourennane Mohamed Kurtsiefer Christian Weinfurter Harald |
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| Affiliation: | Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany. |
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| Abstract: | We report on the experimental observation of the three-photon polarization-entangled W state using spontaneous parametric down-conversion. This state is inequivalent to the Greenberger-Horne-Zeilinger state under stochastic local operations and classical communications and thus is the representative of the second class of genuine tripartite entanglement. We study the characteristic features of entanglement and demonstrate the high degree of two-photon entanglement in the W state. |
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