Towards Quantum Gravity in the Lab on Quantum Processors

TL;DR

This paper demonstrates quantum teleportation experiments inspired by quantum gravity models on various quantum processors, achieving significant results and developing tools for future quantum gravity research in laboratory settings.

Contribution

It presents the first practical implementation of wormhole-inspired teleportation protocols on real quantum computers, along with open-source software for conducting such experiments.

Findings

Achieved teleportation signals up to 80% of theoretical predictions.

Identified experimental challenges in implementing quantum gravity-inspired protocols.

Developed QGLab, an open-source software for teleportation experiments.

Abstract

The holographic principle and its realization in the AdS/CFT correspondence led to unexpected connections between general relativity and quantum information. This set the stage for studying aspects of quantum gravity models, which are otherwise difficult to access, in table-top quantum-computational experiments. Recent works have designed a special teleportation protocol that realizes a surprising communication phenomenon most naturally explained by the physics of a traversable wormhole. In this work, we have carried out quantum experiments based on this protocol on state-of-the-art quantum computers. The target quantum processing units (QPUs) included the Quantinuum's trapped-ion System Model H1-1 and five IBM superconducting QPUs of various architectures, with public and premium user access. We report the observed teleportation signals from these QPUs with the best one reaching 80% of theoretical predictions. We outline the experimental challenges we have faced in the course of implementation, as well as the new theoretical insights into quantum dynamics the work has led to. We also developed QGLab -- an open-source end-to-end software solution that facilitates conducting the wormhole-inspired teleportation experiments on state-of-the-art and emergent generations of QPUs supported by the Qiskit and tket SDKs. We consider our study and deliverables as an early practical step towards the realization of more complex experiments for the indirect probing of quantum gravity in the lab.