Quantum error correction beyond qubits

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

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

121 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
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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