In the past decade, the toolkit of quantum information has been expanded to include
processes in which the basic operations do not have definite causal relations. Originally …

These are exciting times for quantum physics as new quantum technologies are expected to
soon transform computing at an unprecedented level. Simultaneously network science is …

In the standard quantum theory, the causal order of occurrence between events is
prescribed, and must be definite. This has been maintained in all conventional scenarios of …

Quantum mechanics is compatible with scenarios where the relative order between two
events can be indefinite. Here we show that two independent instances of a noisy process …

Understanding the interface between quantum and relativistic theories is crucial for
fundamental and practical advances, especially given that key physical concepts such as …

Causality can be defined in terms of a space-time structure or based on information-theoretic
structures, which correspond to very different notions of causation. When analysing physical …

In the theory of quantum communications, a deeper structure has been recently unveiled,
showing that the capacity does not completely characterize the channel ability to transmit …

In an ordinary quantum algorithm the gates are applied in a fixed order on the systems. The
introduction of indefinite causal structures allows us to relax this constraint and control the …

Quantum steering is an important correlation in quantum information theory. A recent work
[Nat. Commun. 12, 2410 (2021) NCAOBW 2041-1723 10.1038/s41467-021-22353-3] …

A quantum-controlled device may produce a scenario in which two general quantum
operations can be performed in such a way that it is not possible to associate a definite order …