Quantum error correction beyond qubits

Takao Aoki, Go Takahashi, Tadashi Kajiya, Jun Ichi Yoshikawa, Samuel L. Braunstein, Peter Van Loock, Akira Furusawa

Research output: Contribution to journalLetter

96 Citations (Scopus)


Quantum computation and communication rely on the ability to manipulate quantum states robustly and with high fidelity. To protect fragile quantum-superposition states from corruption through so-called decoherence noise, some form of error correction is needed. Therefore, the discovery of quantum error correction (QEC) was a key step to turn the field of quantum information from an academic curiosity into a developing technology. Here, we present an experimental implementation of a QEC code for quantum information encoded in continuous variables, based on entanglement among nine optical beams. This nine-wave-packet adaptation of Shors original nine-qubit scheme enables, at least in principle, full quantum error correction against an arbitrary single-beam error.

Original languageEnglish
Pages (from-to)541-546
Number of pages6
JournalNature Physics
Issue number8
Publication statusPublished - 2009 Aug

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Aoki, T., Takahashi, G., Kajiya, T., Yoshikawa, J. I., Braunstein, S. L., Van Loock, P., & Furusawa, A. (2009). Quantum error correction beyond qubits. Nature Physics, 5(8), 541-546. https://doi.org/10.1038/nphys1309