23–27 Jun 2025
Università degli Studi Federico II, Napoli
Europe/Rome timezone

State updates and useful qubits in relativistic quantum information

25 Jun 2025, 09:55
30m
Accademia Pontaniana

Accademia Pontaniana

Corso Umberto I, 40 - 80138 Napoli (NA)

Speaker

Eduardo Martín-Martínez (University of Waterloo)

Description

What happens when one measures a quantum system in a relativistic setting? We will address the challenge of consistently updating quantum states after selective measurements in a relativistic spacetime. Standard updates along the future lightcones preserve causality but break correlations between causally disconnected parties, whereas updates along the past lightcone can either imply retrocausality or not respect the causal propagation of information. We introduce a minimal extension of multipartite states to encode subsystem-specific contextual information.

Primary author

Eduardo Martín-Martínez (University of Waterloo)

Presentation materials

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