Broadband single-photon-level memory in a hollow-core photonic crystal fibre

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DOIResolve DOI: http://doi.org/10.1038/nphoton.2014.45
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TypeArticle
Journal titleNature Photonics
ISSN1749-4885
Volume8
Issue4
Pages287291; # of pages: 5
SubjectInformation services; Particle beams; Quantum optics; Signal processing; All-optical signal processing; Efficient interaction; Hollow-core photonic crystal fibre; Hyperfine coherences; Light-matter interactions; Of quantum-information; Quantum-information processing; Single-photon level; Photonic crystal fibers
AbstractStoring information encoded in light is critical for realizing optical buffers for all-optical signal processing and quantum memories for quantum information processing. These proposals require efficient interaction between atoms and a well-defined optical mode. Photonic crystal fibres can enhance light-matter interactions and have engendered a broad range of nonlinear effects; however, the storage of light has proven elusive. Here, we report the first demonstration of an optical memory in a hollow-core photonic crystal fibre. We store gigahertz-bandwidth light in the hyperfine coherence of caesium atoms at room temperature using a far-detuned Raman interaction. We demonstrate a signal-to-noise ratio of 2.6:1 at the single-photon level and a memory efficiency of 27 ± 1%. Our results demonstrate the potential of a room-temperature fibre-integrated optical memory for implementing local nodes of quantum information networks.
Publication date
Publishernature publishing group
LanguageEnglish
AffiliationNational Research Council Canada; Security and Disruptive Technologies
Peer reviewedYes
NPARC number21272767
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Record identifier9e17f3e8-0c50-4955-af05-dc559b681a44
Record created2014-12-03
Record modified2016-05-09
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