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Mar 31, 2024

Quantum Gravity Breaks Causality — And You Can Compute With It

Posted by in categories: computing, open access, quantum physics

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If you flip a light switch, the light will turn on. A cause and its effect. Simple enough… until quantum gravity come into play. Once you add quantum gravity, lights can turn on and make switches flip. And some physicists think that this could help build better computers. Why does quantum physics make causality so strange? And how can we use quantum gravity to build faster computers? Let’s have a look.

The paper on indefinite causal structures is here: https://arxiv.org/abs/quant-ph/0701019

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