From Bell’s theorem to the device-independent quantum information scenario
Antonio Acin (ICFO, Barcelona)
| Quand ? |
Le 23/03/2026, de 11:00 à 12:00 |
|---|---|
| Où ? | Salle Condorcet |
| S'adresser à | Tommaso Roscilde |
| Participants |
Antonio Acin |
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Bell’s theorem proved the existence of quantum correlations with no classical analogue. After reviewing this fundamental result, we show how Bell non-local correlations are the crucial ingredient for device-independent quantum information applications. In this paradigm, devices are seen as uncharacterised quantum black boxes processing classical information and protocols are built without requiring any device modelling. This device-independent property guarantees that the protocol performance is self-certified and, in particular, provides the strongest form of quantum security. We conclude by discussing applications of the device-independent formalism in other fields, such as quantum foundations or many-body physics.