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Experimental demonstration of 4 party quantum secret sharing and multiparty quantum key distribution

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5 Author(s)
S. Gaertner ; Max-Planck-Inst. fur Quantenoptik, Garching, Germany ; M. Bourennane ; M. Eibl ; C. Kurtsiefer
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A polarization entangled 4-photon state is shown to be directly created by parametric down-conversion. How this state can be used for quantum secret sharing is discussed. Quantum key distribution is distributed to 3 of the 4 parties. Experimental implementation of this multiparty quantum secure communication schemes and demonstration of a 4-party quantum secret-sharing protocol are presented.

Published in:

Quantum Electronics Conference, 2003. EQEC '03. European

Date of Conference:

22-27 June 2003