Lucas Vieira - Nonclassical temporal correlations under finite-memory constraints

Nonclassical temporal correlations under finite-memory constraints

Ce séminaire, donné par Lucas Vieira, aura lieu le 11 March 2026, à 13:0. Il aura lieu en salle 25-26/105.

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Résumé

The existence of nonclassical correlations is one of the most surprising predictions of quantum mechanics. These have been the subject of intense research, especially in the case of spatially separated systems. However, physical phenomena unfold not only in space, but also in time. What do we know about the nonclassicality of temporal correlations? How do they differ from their spatial counterpart? This talk covers some recent results investigating temporal correlations arising from sequential operations on a single system. In particular, we examine how the resulting temporal correlations are fundamentally constrained when this system is finite-dimensional, corresponding to a finite amount of memory. To this end we employ the framework of finite-state machines, recently introduced in the study of temporal correlations without the traditional assumption of noninvasive classical measurements. This approach allows classical and quantum theory to be compared on equal terms, establishing a precise notion of genuinely nonclassical temporal correlations.