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math.CT2021
Composable constraints
Matt Wilson, Augustin Vanrietvelde
We introduce a notion of compatibility between constraint encoding and compositional structure. Phrased in the language of category theory, it is given by a "composable constraint…
quant-ph2021★ 13 cited
Universal control of quantum processes using sector-preserving channels
Augustin Vanrietvelde, Giulio Chiribella
No quantum circuit can turn a completely unknown unitary gate into its coherently controlled version. Yet, coherent control of unknown gates has been realised in experiments, makin…