Qiss

Witnessing non-classicality beyond quantum theory. Published in Physical Review D. By Chiara Marletto (QISS Oxford Physics) and Vlatko Vedral (QISS Oxford Physics). Popular Summary: This paper provides the strongest theoretical basis for recently proposed experiments to test quantum effects in gravity, achieving the remarkable result that such experiments, if performed successfully, would rule out all …

Witnessing non-classicality beyond quantum theory Read More »

Quantum information and the arrow of time. Andrea Di Biagio (QISS Rome), Pietro Donà, Carlo Rovelli (QISS Marseille)  pre-published at  Popular Summary: Standard formulations of quantum mechanics feature two distinct laws describing how the state of a quantum system changes in time. The first law, the Schrödinger equation, is smooth and time-reversal symmetric. By looking …

Quantum information and the arrow of time Read More »

Cognitive Structures of Space-Time. Published in Frontiers in Psychology, 21 October 2020. By Signorelli Camilo Miguel, Dündar-Coecke Selma, Wang Vincent, Coecke Bob (QISS Oxford Computer Science) Popular Summary Space and time have been the subject of physics for thousands of years, with Euclid’s account paving the way for modern mathematics. At the same time it …

Cognitive Structures of Space-Time Read More »

[1] Facts are relative, Caslav Brukner, Nature Physics volume 16, pages 1172–1174 (2020),  [2] A no-go theorem for the persistent reality of Wigner’s friend’s perception (under review) Popular summary:  The quantum measurement problem is one of the most fundamental in quantum theory and its putative solutions are at the centre of controversy over their alternative interpretations. …

Wigner’s friend through experiment: relativity of facts Read More »