Blind quantum computation for QFT on multi-qubit states. (arXiv:1801.00080v1 [quant-ph])

Blind quantum computing (BQC) allows a client who does not have complex
quantum technologies can delegate her quantum computing to a server who has
fully fledged quantum computers without knowing anything about her quantum
inputs, algorithms and outputs. In this paper, we mainly study how to hide
quantum fourier transform (QFT) performed on multi-qubit states. We first give
the equivalently quantum circuits of QFT performed on
Greenberg-Horne-Zeilinger(GHZ) entangled states. Next, we extend this result to
multi-qubit quantum states. At last, we give the analysis and proof of the
blindness and correctness.

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