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Search: WFRF:(Kashefi Elham)

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  • Douce, Tom, et al. (author)
  • Probabilistic fault-tolerant universal quantum computation and sampling problems in continuous variables
  • 2019
  • In: Physical Review A. - 2469-9934 .- 2469-9926. ; 99:1
  • Journal article (peer-reviewed)abstract
    • Continuous-variable (CV) devices are a promising platform for demonstrating large-scale quantum information protocols. In this framework we define a general quantum computational model based on a CV hardware. It consists of vacuum input states, a finite set of gates-including non-Gaussian elements-and homodyne detection. We show that this model incorporates encodings sufficient for probabilistic fault-tolerant universal quantum computing. Furthermore, we show that this model can be adapted to yield sampling problems that cannot be simulated efficiently with a classical computer, unless the polynomial hierarchy collapses. This allows us to provide a simple paradigm for experiments to probe quantum advantage relying on Gaussian states, homodyne detection, and some form of non-Gaussian evolution. We finally address the recently introduced model of instantaneous quantum computing in CV, and prove that the hardness statement is robust with respect to some experimentally relevant simplifications in the definition of that model.
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  • Result 1-2 of 2
Type of publication
conference paper (1)
journal article (1)
Type of content
peer-reviewed (2)
Author/Editor
Ferrini, Giulia, 198 ... (2)
Markham, Damian (2)
Douce, Tom (2)
Kashefi, Elham (2)
van Loock, Peter (2)
University
Chalmers University of Technology (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Engineering and Technology (1)
Year
2019 (2)

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