Combatting noise in near-term quantum data centres

TL;DR

This paper evaluates various error mitigation strategies in near-term quantum data centres, comparing quantum error detection codes and entanglement distillation through detailed simulations to identify effective noise reduction methods.

Contribution

It provides a comparative analysis of quantum error detection and entanglement distillation techniques specifically for distributed quantum computing in near-term hardware.

Findings

Quantum error detection improves gate fidelity.

Entanglement distillation offers alternative noise mitigation.

Simulation results guide practical error handling choices.

Abstract

We analyse the performance of different error handling methods in the quantum data centre paradigm of distributed quantum computing. We compare the impact of quantum error detection, using the three-qubit repetition code and the [[4, 1, 2]] Leung-Nielsen-Chuang-Yamamoto code, on remote gates with that of conventional entanglement distillation techniques. Detailed classical simulation is used to obtain results for realistic near-term hardware.