Combating entanglement sudden death with non-local quantum-error correction

TL;DR

This paper explores using non-local quantum error correction to prevent entanglement sudden death caused by dissipation, improving upon previous local correction methods that could sometimes induce entanglement loss.

Contribution

It introduces a non-local quantum error correction scheme that effectively prevents finite-time disentanglement, advancing quantum error correction strategies for entanglement preservation.

Findings

Non-local quantum error correction can prevent entanglement sudden death.

Compared to local correction, non-local methods offer better entanglement preservation.

Non-local correction avoids inducing entanglement where it was initially absent.

Abstract

We study the possibility of preventing finite-time disentanglement caused by dissipation by making use of "non-local quantum error correction. This is made in comparison of previous results, where was shown that "local" quantum error correction can delay disentanglement, but can also cause entanglement sudden death when is not originally present.