Marco Túlio Quintino

Distributed sampling, quantum communication witnesses, and measurement incompatibility

2019 · Physical Review A

We study prepare-and-measure experiments where the sender (Alice) receives trusted quantum inputs but has an untrusted state-preparation device and the receiver (Bob) has a fully untrusted measurement device. A distributed-sampling task naturally arises in this …

Detecting quantum non-breaking channels without entanglement

2021 · arXiv (Cornell University)

Quantum channels, which break entanglement, incompatibility, or nonlocality, are not useful for entanglement-based, one-sided device-independent, or device-independent quantum information processing, respectively. Here, we show that such breaking channels are related to certain temporal quantum correlations, …