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Quantum secret sharing based on reusable Greenberger-Horne-Zeilinger states as secure carriers

2003; American Physical Society; Volume: 67; Issue: 4 Linguagem: Inglês

10.1103/physreva.67.044302

1538-4446

Saber Bagherinezhad, Vahid Karimipour,

Quantum Computing Algorithms and Architecture

We introduce a protocol for quantum secret sharing based on reusable entangled states. The entangled state between the sender and the receiver acts only as a carrier to which data bits are entangled by the sender and disentangled from it by the receivers, all by local actions of simple gates. We also show that the interception by Eve or the cheating of one of the receivers introduces a quantum bit error rate larger than 25% which can be detected by comparing a subsequence of the bits.