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Quantum non-demolition measurements in optics

Author

Listed:
  • Philippe Grangier

    (Laboratoire Charles Fabry de l'Institut d'Optique, CNRS (URA 14))

  • Juan Ariel Levenson

    (France Telecom/CNET/DTD/Laboratoire de Bagneux, CNRS (URA 250))

  • Jean-Philippe Poizat

    (Laboratoire Charles Fabry de l'Institut d'Optique, CNRS (URA 14))

Abstract

Quantum non-demolition measurements are designed to circumvent the limitations imposed by Heisenberg's uncertainty principle when performing repeated measurements of quantum states. Recent progress in quantum optics has enabled the experimental realization of quantum non-demolition measurements of the photon flux of a light beam. This achievement bears on fundamental issues about the ultimate sensitivity of measurements, and may open the way for applications such as noise-free information tapping in optical telecommunications.

Suggested Citation

  • Philippe Grangier & Juan Ariel Levenson & Jean-Philippe Poizat, 1998. "Quantum non-demolition measurements in optics," Nature, Nature, vol. 396(6711), pages 537-542, December.
    • Handle: RePEc:nat:nature:v:396:y:1998:i:6711:d:10.1038_25059
    DOI: 10.1038/25059
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