Experimental Demonstration of Four-Party Quantum Secret Sharing

S. Gaertner, C. Kurtsiefer, M. Bourennane, and H. Weinfurter
Phys. Rev. Lett. 98, 020503 – Published 12 January 2007

Abstract

Secret sharing is a multiparty cryptographic task in which some secret information is split into several pieces which are distributed among the participants such that only an authorized set of participants can reconstruct the original secret. Similar to quantum key distribution, in quantum secret sharing, the secrecy of the shared information relies not on computational assumptions, but on laws of quantum physics. Here, we present an experimental demonstration of four-party quantum secret sharing via the resource of four-photon entanglement.

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  • Received 26 June 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.020503

©2007 American Physical Society

Authors & Affiliations

S. Gaertner1,2, C. Kurtsiefer3, M. Bourennane4, and H. Weinfurter1,2

  • 1Sektion Physik, Ludwig-Maximilians-Universität, 80799 München, Germany
  • 2Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany
  • 3Department of Physics, National University of Singapore, 117542 Singapore, Singapore
  • 4Physics Department, Stockholm University, S-10691 Stockholm, Sweden

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Issue

Vol. 98, Iss. 2 — 12 January 2007

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