26 citations · 33 across the 5 of their papers we have counts for
10 papers · 1 filter
Quantum teleportation of quantum causal structures
Marius Krumm, Philippe Allard Guérin, Thomas Zauner +1
Quantum teleportation is a very helpful information-theoretic protocol that allows to transfer an unknown arbitrary quantum state from one location to another without having to tra…
Qubits are not observers -- a no-go theorem
Časlav Brukner
The relational approach to quantum states asserts that the physical description of quantum systems is always relative to something or someone. In relational quantum mechanics (RQM)…
Comment on "Revisiting dynamics of quantum causal structures --when can causal order evolve?''
Esteban Castro-Ruiz, Flaminia Giacomini, Časlav Brukner
In the last few years, there has been increasing interest in quantum processes with indefinite causal order. Process matrices are a convenient framework to study such processes. Re…
Quantum Temporal Superposition: the case of QFT
Laura J. Henderson, Alessio Belenchia, Esteban Castro-Ruiz +4
Quantum field theory is completely characterized by the field correlations between spacetime points. In turn, some of these can be accessed by locally coupling to the field simple…
Quantum clocks and the temporal localisability of events in the presence of gravitating quantum systems
Esteban Castro-Ruiz, Flaminia Giacomini, Alessio Belenchia +1
The standard formulation of quantum theory relies on a fixed space-time metric determining the localisation and causal order of events. In general relativity, the metric is influen…
Information Content of the Gravitational Field of a Quantum Superposition
Alessio Belenchia, Robert M. Wald, Flaminia Giacomini +3
When a massive quantum body is put into a spatial superposition, it is of interest to consider the quantum aspects of the gravitational field sourced by the body. We argue that in…