By the same authors

From the same journal

Quantum error correction beyond qubits

Research output: Contribution to journalArticle


  • Takao Aoki
  • Go Takahashi
  • Tadashi Kajiya
  • Jun-ichi Yoshikawa
  • Samuel L. Braunstein
  • Peter van Loock
  • Akira Furusawa


Publication details

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


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(1,2) (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(3). This nine-wave-packet adaptation of Shor's original nine-qubit scheme(1) enables, at least in principle, full quantum error correction against an arbitrary single-beam error.

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