Quantum Gravity on a Quantum Computer?

TL;DR

This paper explores the possibility of representing spacetime curvature through quantum entanglement, suggesting that quantum computers could simulate quantum gravity by analyzing the entanglement structure of the vacuum.

Contribution

It proposes that spacetime curvature might be fully characterized by vacuum entanglement, enabling quantum simulation of quantum gravity using quantum information methods.

Findings

Entanglement affects vacuum state in curved spacetime

Spacetime curvature may be expressed via entanglement structure

Quantum computers could simulate quantum gravity phenomena

Abstract

EPR-type measurements on spatially separated entangled spin qubits allow one, in principle, to detect curvature. Also the entanglement of the vacuum state is affected by curvature. Here, we ask if the curvature of spacetime can be expressed entirely in terms of the spatial entanglement structure of the vacuum. This would open up the prospect that quantum gravity could be simulated on a quantum computer and that quantum information techniques could be fully employed in the study of quantum gravity.