IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v5y2014i1d10.1038_ncomms6298.html
   My bibliography  Save this article

Observation of strongly entangled photon pairs from a nanowire quantum dot

Author

Listed:
  • Marijn A. M. Versteegh

    (Quantum Transport, Kavli Institute of Nanoscience, Delft University of Technology)

  • Michael E. Reimer

    (Quantum Transport, Kavli Institute of Nanoscience, Delft University of Technology)

  • Klaus D. Jöns

    (Quantum Transport, Kavli Institute of Nanoscience, Delft University of Technology)

  • Dan Dalacu

    (National Research Council of Canada)

  • Philip J. Poole

    (National Research Council of Canada)

  • Angelo Gulinatti

    (Politecnico di Milano)

  • Andrea Giudice

    (Micro Photon Devices)

  • Val Zwiller

    (Quantum Transport, Kavli Institute of Nanoscience, Delft University of Technology)

Abstract

A bright photon source that combines high-fidelity entanglement, on-demand generation, high extraction efficiency, directional and coherent emission, as well as position control at the nanoscale is required for implementing ambitious schemes in quantum information processing, such as that of a quantum repeater. Still, all of these properties have not yet been achieved in a single device. Semiconductor quantum dots embedded in nanowire waveguides potentially satisfy all of these requirements; however, although theoretically predicted, entanglement has not yet been demonstrated for a nanowire quantum dot. Here, we demonstrate a bright and coherent source of strongly entangled photon pairs from a position-controlled nanowire quantum dot with a fidelity as high as 0.859±0.006 and concurrence of 0.80±0.02. The two-photon quantum state is modified via the nanowire shape. Our new nanoscale entangled photon source can be integrated at desired positions in a quantum photonic circuit, single-electron devices and light-emitting diodes.

Suggested Citation

  • Marijn A. M. Versteegh & Michael E. Reimer & Klaus D. Jöns & Dan Dalacu & Philip J. Poole & Angelo Gulinatti & Andrea Giudice & Val Zwiller, 2014. "Observation of strongly entangled photon pairs from a nanowire quantum dot," Nature Communications, Nature, vol. 5(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6298
    DOI: 10.1038/ncomms6298
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms6298
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms6298?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6298. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.