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Classical multiparty computation using quantum resources

Clementi, M; Pappa, A; Eckstein, A; Walmsley, IA; Kashefi, E; Barz, S; (2017) Classical multiparty computation using quantum resources. Physical Review A , 96 (6) , Article 062317. 10.1103/PhysRevA.96.062317. Green open access

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Abstract

In this work, we demonstrate a way to perform classical multiparty computing among parties with limited computational resources. Our method harnesses quantum resources to increase the computational power of the individual parties. We show how a set of clients restricted to linear classical processing are able to jointly compute a nonlinear multivariable function that lies beyond their individual capabilities. The clients are only allowed to perform classical xor gates and single-qubit gates on quantum states. We also examine the type of security that can be achieved in this limited setting. Finally, we provide a proof-of-concept implementation using photonic qubits that allows four clients to compute a specific example of a multiparty function, the pairwise

Type: Article
Title: Classical multiparty computation using quantum resources
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevA.96.062317
Publisher version: https://doi.org/10.1103/PhysRevA.96.062317
Language: English
Additional information: © 2017 American Physical Society. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Optics, Physics, Atomic, Molecular & Chemical, Physics
URI: http://discovery.ucl.ac.uk/id/eprint/10041267
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