Multi-party Quantum Computation

Details Multi-party Quantum Computation Multi-party Quantum Computation

2001-11-06

arxiv.org/abs/quant-ph/0111030v1

Physics

Quantum Physics

Masters Thesis. Based on Joint work with Claude Crepeau and Daniel Gottesman. Full version is in preparation

Scientific paper

We investigate definitions of and protocols for multi-party quantum computing in the scenario where the secret data are quantum systems. We work in the quantum information-theoretic model, where no assumptions are made on the computational power of the adversary. For the slightly weaker task of verifiable quantum secret sharing, we give a protocol which tolerates any t < n/4 cheating parties (out of n). This is shown to be optimal. We use this new tool to establish that any multi-party quantum computation can be securely performed as long as the number of dishonest players is less than n/6.

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