Multi-agent blind quantum computation without universal cluster state

06/27/2022

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by   Shuxiang Cao, et al.

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Blind quantum computation (BQC) protocols enable quantum algorithms to be executed on third-party quantum agents while keeping the data and algorithm confidential. The previous proposals for measurement-based BQC require preparing a highly entangled cluster state. In this paper, we show that such a requirement is not necessary. Our protocol only requires pre-shared bell pairs between delegated quantum agents, and there is no requirement of any classical or quantum information exchange between agents during the execution. Our proposal requires fewer quantum resources than previous proposals by removing the universal cluster state.