Quantum Processes Get a Reality Check: New Theorems Shed Light on Causality
Physicists at ETH Zurich and the University of Grenoble have developed a new theoretical framework that helps understand how quantum processes are limited by classical space-time. The researchers have created no-go theorems that limit quantum processes such as quantum indefinite causal order (ICO) in space-time causality. These theorems demonstrate that ICO processes can be embedded…