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 journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)541-546
Number of pages6
JournalNature Physics
Volume5
Issue number8
DOIs
Publication statusPublished - Aug 2009

Keywords

  • TELEPORTATION
  • REALIZATION
  • VARIABLES
  • STATES
  • CODE

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