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arXiv · 1204.3370

Quantum walks with encrypted data

Peter P. Rohde·Joseph F. Fitzsimons·Alexei Gilchrist
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Abstract

In the setting of networked computation, data security can be a significant concern. Here we consider the problem of allowing a server to remotely manipulate client supplied data, in such a way that both the information obtained by the client about the server's operation and the information obtained by the server about the client's data are significantly limited. We present a protocol for achieving such functionality in two closely related models of restricted quantum computation -- the Boson sampling and quantum walk models. Due to the limited technological requirements of the Boson scattering model, small scale implementations of this technique are feasible with present-day technology.

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Peter P. Rohde, Joseph F. Fitzsimons, Alexei Gilchrist. 2012-04-16. Quantum walks with encrypted data. https://doi.org/10.1103/physrevlett.109.150501

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