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Frequency and bandwidth conversion of single photons in a room-temperature diamond quantum memory

Author

Listed:
  • Kent A. G. Fisher

    (University of Waterloo)

  • Duncan G. England

    (National Research Council of Canada)

  • Jean-Philippe W. MacLean

    (University of Waterloo)

  • Philip J. Bustard

    (National Research Council of Canada)

  • Kevin J. Resch

    (University of Waterloo)

  • Benjamin J. Sussman

    (National Research Council of Canada
    University of Ottawa)

Abstract

The spectral manipulation of photons is essential for linking components in a quantum network. Large frequency shifts are needed for conversion between optical and telecommunication frequencies, while smaller shifts are useful for frequency-multiplexing quantum systems, in the same way that wavelength division multiplexing is used in classical communications. Here we demonstrate frequency and bandwidth conversion of single photons in a room-temperature diamond quantum memory. Heralded 723.5 nm photons, with 4.1 nm bandwidth, are stored as optical phonons in the diamond via a Raman transition. Upon retrieval from the diamond memory, the spectral shape of the photons is determined by a tunable read pulse through the reverse Raman transition. We report central frequency tunability over 4.2 times the input bandwidth, and bandwidth modulation between 0.5 and 1.9 times the input bandwidth. Our results demonstrate the potential for diamond, and Raman memories in general, as an integrated platform for photon storage and spectral conversion.

Suggested Citation

  • Kent A. G. Fisher & Duncan G. England & Jean-Philippe W. MacLean & Philip J. Bustard & Kevin J. Resch & Benjamin J. Sussman, 2016. "Frequency and bandwidth conversion of single photons in a room-temperature diamond quantum memory," Nature Communications, Nature, vol. 7(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11200
    DOI: 10.1038/ncomms11200
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