Continuous-variable quantum computing on encrypted data

Research output: Contribution to journalJournal article – Annual report year: 2016Researchpeer-review

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The ability to perform computations on encrypted data is a powerful tool for protecting a client's privacy, especially in today's era of cloud and distributed computing. In terms of privacy, the best solutions that classical techniques can achieve are unfortunately not unconditionally secure in the sense that they are dependent on a hacker's computational power. Here we theoretically investigate, and experimentally demonstrate with Gaussian displacement and squeezing operations, a quantum solution that achieves the security of a user's privacy using the practical technology of continuous variables. We demonstrate losses of up to 10 km both ways between the client and the server and show that security can still be achieved. Our approach offers a number of practical benefits (from a quantum perspective) that could one day allow the potential widespread adoption of this quantum technology in future cloud-based computing networks.
Original languageEnglish
Article number13795
JournalNature Communications
Volume7
Number of pages7
ISSN2041-1723
DOIs
Publication statusPublished - 2016
CitationsWeb of Science® Times Cited: No match on DOI

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