Research

Hybrid microfiber-lithium-niobate nanowaveguide structures as high-purity heralded single-photon sources


Reference:

Main, P., Mosley, P. J., Ding, W., Zhang, L. and Gorbach, A. V., 2016. Hybrid microfiber-lithium-niobate nanowaveguide structures as high-purity heralded single-photon sources. Physical Review A: Atomic, Molecular, and Optical Physics, 94 (6), 063844.

Related documents:

[img]
Preview
PDF (LU16200A) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (701kB) | Preview

    Official URL:

    http://dx.doi.org/10.1103/PhysRevA.94.063844

    Related URLs:

    Abstract

    We propose a compact, fiber-integrated architecture for photon-pair generation by parametric downconversion with unprecedented flexibility in the properties of the photons produced. Our approach is based on a thin-film lithium niobate nanowaveguide, evanescently coupled to a tapered silica microfiber. We demonstrate how controllable mode hybridization between the fiber and waveguide yields control over the joint spectrum of the photon pairs. We also investigate how independent engineering of the linear and nonlinear properties of the structure can be achieved through the addition of a tapered, proton-exchanged layer to the waveguide. This allows further refinement of the joint spectrum through custom profiling of the effective nonlinearity, drastically improving the purity of the heralded photons. We give details of a source design capable of generating heralded single photons in the telecom wavelength range with purity of at least 0.95, and we provide a feasible fabrication methodology.

    Details

    Item Type Articles
    CreatorsMain, P., Mosley, P. J., Ding, W., Zhang, L. and Gorbach, A. V.
    DOI10.1103/PhysRevA.94.063844
    Related URLs
    URLURL Type
    http://www.scopus.com/inward/record.url?scp=85006337302&partnerID=8YFLogxKUNSPECIFIED
    Uncontrolled Keywordsatomic and molecular physics, and optics
    DepartmentsFaculty of Science > Physics
    Research CentresCentre for Photonics and Photonic Materials
    EPSRC Centre for Doctoral Training in Statistical Mathematics (SAMBa)
    Centre for Nanoscience and Nanotechnology
    Condensed Matter Physics CDT
    RefereedYes
    StatusPublished
    ID Code53659

    Export

    Actions (login required)

    View Item

    Document Downloads

    More statistics for this item...