403 citations · 1.3k across the 44 of their papers we have counts for
6 papers · 1 filter
Quantum Shannon theory with superpositions of trajectories
Giulio Chiribella, Hlér Kristjánsson
Shannon's theory of information was built on the assumption that the information carriers were classical systems. Its quantum counterpart, quantum Shannon theory, explores the new…
Experimental transmission of quantum information using a superposition of causal orders
Yu Guo, Xiao-Min Hu, Zhi-Bo Hou +7
Communication in a network generally takes place through a sequence of intermediate nodes connected by communication channels. In the standard theory of communication, it is assume…
Quantum communication in a superposition of causal orders
Sina Salek, Daniel Ebler, Giulio Chiribella
Quantum mechanics allows for situations where the relative order between two processes is entangled with a quantum degree of freedom. Here we show that such entanglement can enhanc…
Quantum speedup in the identification of cause-effect relations
Giulio Chiribella, Daniel Ebler
The ability to identify cause-effect relations is an essential component of the scientific method. The identification of causal relations is generally accomplished through statisti…
Agents, subsystems, and the conservation of information
Giulio Chiribella
Dividing the world into subsystems is an important component of the scientific method. The choice of subsystems, however, is not defined a priori. Typically, it is dictated by expe…
Attaining the ultimate precision limit in quantum state estimation
Yuxiang Yang, Giulio Chiribella, Masahito Hayashi
We derive a bound on the precision of state estimation for finite dimensional quantum systems and prove its attainability in the generic case where the spectrum is non-degenerate.…