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

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DOIResolve DOI: https://doi.org/10.1038/ncomms11200
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  1. National Research Council of Canada. Security and Disruptive Technologies
FormatText, Article
Journal titleNature Communications
ISSN2041-1723
Volume7
Article number11200
Pages1–6
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.
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PublisherNature Publishing Group
Nature Publishing Group
LanguageEnglish
Peer reviewedYes
Identifierncomms11200
NPARC number23000360
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Record identifier8b3730b4-d1fc-422a-8811-fb3a499b5b66
Record created2016-07-08
Record modified2020-09-09
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