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arXiv · 1308.2102

Gaussian error correction of quantum states in a correlated noisy channel

Mikael Lassen·Adriano Berni·Lars S. Madsen·Radim Filip·Ulrik L. Andersen
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Abstract

Noise is the main obstacle for the realization of fault tolerant quantum information processing and secure communication over long distances. In this work, we propose a communication protocol relying on simple linear optics that optimally protects quantum states from non-Markovian or corre- lated noise. We implement the protocol experimentally and demonstrate the near ideal protection of coherent and entangled states in an extremely noisy channel. Since all real-life channels are exhibit- ing pronounced non-Markovian behavior, the proposed protocol will have immediate implications in improving the performance of various quantum information protocols.

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Mikael Lassen, Adriano Berni, Lars S. Madsen, Radim Filip, Ulrik L. Andersen. 2013-12-10. Gaussian error correction of quantum states in a correlated noisy channel. https://doi.org/10.1103/physrevlett.111.180502

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