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Quantum Foundations

The ABC of Deutsch-Hayden Descriptors

arXiv

Authors: Charles Alexandre Bédard

Year

2020

Paper ID

18243

Status

Preprint

Abstract Read

~2 min

Abstract Words

109

Citations

N/A

Abstract

It has been more than 20 years since Deutsch and Hayden proved the locality of quantum theory, using the Heisenberg picture of quantum computational networks. Of course, locality holds even in the face of entanglement and Bell's theorem. Today, most researchers in quantum foundations are still convinced not only that a local description of quantum systems has not yet been provided, but that it cannot exist. The main goal of this paper is to address this misconception by re-explaining the descriptor formalism in a hopefully accessible and self-contained way. It is a step-by-step guide to how and why descriptors work. Finally, superdense coding is revisited in the light of descriptors.

Why This Paper Matters

This paper contributes to the Quantum Foundations research area in the Quantum Articles archive.
It adds a 2020 reference point for readers tracking recent quantum research.
It has been more than 20 years since Deutsch and Hayden proved the locality of quantum theory, using the Heisenberg picture of quantum computational networks.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2012.11189 [2] arXiv https://arxiv.org/abs/2012.11189 [3] Publisher https://arxiv.org/abs/2012.11189

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