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Paper detail

Closed timelike curves in measurement-based quantum computation

Many results have been recently obtained regarding the power of hypothetical closed time-like curves (CTCs) in quantum computation. Here we show that the one-way model of measurement-based quantum computation encompasses in a natural way the CTC model proposed by Bennett, Schumacher and Svetlichny. We identify a class of CTCs in this model that can be simulated deterministically and point to a fundamental limitation of Deutsch's CTC model which leads to predictions conflicting with those of the one-way model.

preprint2010arXivOpen access
Raphael Dias da SilvaErnesto F. GalvaoElham Kashefi
quant-ph
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Raphael Dias da SilvaErnesto F. GalvaoElham Kashefi

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