684 citations · 3.4k across the 49 of their papers we have counts for
5 papers · 1 filter
A no-go theorem for superpositions of causal orders
Fabio Costa
The causal order of events need not be fixed: whether a bus arrives before or after another at a certain stop can depend on other variables -- like traffic. Coherent quantum contro…
Classical communication through quantum causal structures
Kaumudibikash Goswami, Fabio Costa
Quantum mechanics allows operations to be in indefinite causal order. Recently there have been active discussions on enhanced communication strategies through exotic causal structu…
Time-travelling billiard-ball clocks: a quantum model
Lachlan G. Bishop, Fabio Costa, Timothy C. Ralph
General relativity predicts the existence of closed timelike curves (CTCs), along which an object could travel to its own past. A consequence of CTCs is the failure of determinism,…
Effect of environment on the interferometry of clocks
Harshit Verma, Magdalena Zych, Fabio Costa
Quantum interference of "clocks", namely of particles with time-evolving internal degrees of freedom (DOFs), is a promising avenue to test genuine general relativistic effects in q…
Reversible dynamics with closed time-like curves and freedom of choice
Germain Tobar, Fabio Costa
The theory of general relativity predicts the existence of closed time-like curves (CTCs), which theoretically would allow an observer to travel back in time and interact with thei…