# Enhanced Multiqubit Phase Estimation in Noisy Environments by Local Encoding.

@article{Proietti2019EnhancedMP, title={Enhanced Multiqubit Phase Estimation in Noisy Environments by Local Encoding.}, author={Massimiliano Proietti and Martin Ringbauer and Francesco Graffitti and Peter Barrow and Alexander Pickston and Dmytro Kundys and Daniel Cavalcanti and Leandro Aolita and Rafael Chaves and Alessandro Fedrizzi}, journal={Physical review letters}, year={2019}, volume={123 18}, pages={ 180503 } }

The first generation of multiqubit quantum technologies will consist of noisy, intermediate-scale devices for which active error correction remains out of reach. To exploit such devices, it is thus imperative to use passive error protection that meets a careful trade-off between noise protection and resource overhead. Here, we experimentally demonstrate that single-qubit encoding can significantly enhance the robustness of entanglement and coherence of four-qubit graph states against local… Expand

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