Time has a fundamentally different character in quantum mechanics and in general relativity.
In quantum theory events unfold in a fixed order while in general relativity temporal order is …

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 …

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 …

We propose a thermodynamic refrigeration cycle which uses indefinite causal orders to
achieve nonclassical cooling. The cycle cools a cold reservoir while consuming purity in a …

Counter-intuitively, quantum mechanics enables quantum particles to propagate
simultaneously among multiple space-time trajectories. Hence, a quantum information …

A completely depolarising quantum channel always outputs a fully mixed state and thus
cannot transmit any information. In a recent Letter [3], it was however shown that if a …

A series of recent works has shown that placing communication channels in a coherent
superposition of alternative configurations can boost their ability to transmit information …

In a recent series of works [Ebler, Phys. Rev. Lett. 120, 120502 (2018) PRLTAO 0031-9007
10.1103/PhysRevLett. 120.120502; arxiv: 1809.06655 v2; arxiv: 1810.10457 v2], it has …

Models for quantum computation with circuit connections subject to the quantum
superposition principle have recently been proposed. In them, a control quantum system can …

In quantum Shannon theory, transmission of information is enhanced by quantum features.
Up to very recently, the trajectories of transmission remained fully classical. Recently, a new …