Secure assisted quantum computation

Details Secure assisted quantum computation Secure assisted quantum computation

2001-11-07

arxiv.org/abs/quant-ph/0111046v2

Quantum Information and Computation 5, 456 (2005)

Physics

Quantum Physics

11 pages, 5 figures; v2: published version

Scientific paper

Suppose Alice wants to perform some computation that could be done quickly on a quantum computer, but she cannot do universal quantum computation. Bob can do universal quantum computation and claims he is willing to help, but Alice wants to be sure that Bob cannot learn her input, the result of her calculation, or perhaps even the function she is trying to compute. We describe a simple, efficient protocol by which Bob can help Alice perform the computation, but there is no way for him to learn anything about it. We also discuss techniques for Alice to detect whether Bob is honestly helping her or if he is introducing errors.

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