Showing 2018Show all
3 papers · 1 filter
quant-ph2018
Communication through quantum-controlled noise
Philippe Allard Guérin, Giulia Rubino, Časlav Brukner
In a recent series of works [Ebler et al. Phys. Rev. Lett. 120, 120502 (2018); arXiv:1809.06655v2; arXiv:1810.10457v2], it has been proposed that the quantum superposition of causa…
quant-ph2018
Composition rules for quantum processes: a no-go theorem
Philippe Allard Guérin, Marius Krumm, Costantino Budroni +1
A quantum process encodes the causal structure that relates quantum operations performed in local laboratories. The process matrix formalism includes as special cases quantum mecha…
quant-ph2018
Observer-dependent locality of quantum events
Philippe Allard Guérin, Časlav Brukner
In general relativity, the causal structure between events is dynamical, but it is definite and observer-independent; events are point-like and the membership of an event A in the…