• Corpus ID: 251223602

Device-independent certification of indefinite causal order in the quantum switch

  title={Device-independent certification of indefinite causal order in the quantum switch},
  author={Tein van der Lugt and Jonathan Barrett and Giulio Chiribella},
Quantum theory is compatible with scenarios in which the order of operations is indefinite. Experimental investigations of such scenarios, all of which have been based on a process known as the quantum switch, have provided demonstrations of indefinite causal order conditioned on assumptions on the devices used in the laboratory. But is a device-independent certification possible, similar to the certification of entanglement through Bell inequalities? Despite previous evidence suggesting a negative… 
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