IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v7y2016i1d10.1038_ncomms11925.html
   My bibliography  Save this article

Loss-tolerant state engineering for quantum-enhanced metrology via the reverse Hong–Ou–Mandel effect

Author

Listed:
  • Alexander E. Ulanov

    (Russian Quantum Center
    Moscow Institute of Physics and Technology)

  • Ilya A. Fedorov

    (Russian Quantum Center
    P.N. Lebedev Physics Institute)

  • Demid Sychev

    (Russian Quantum Center)

  • Philippe Grangier

    (Laboratoire Charles Fabry, Institut d’Optique Graduate School, CNRS, Université Paris-Saclay)

  • A. I. Lvovsky

    (Russian Quantum Center
    P.N. Lebedev Physics Institute
    Institute for Quantum Science and Technology, University of Calgary)

Abstract

Highly entangled quantum states, shared by remote parties, are vital for quantum communications and metrology. Particularly promising are the N00N states—entangled N-photon wavepackets delocalized between two different locations—which outperform coherent states in measurement sensitivity. However, these states are notoriously vulnerable to losses, making them difficult to both share them between remote locations and recombine in order to exploit interference effects. Here we address this challenge by utilizing the reverse Hong–Ou–Mandel effect to prepare a high-fidelity two-photon N00N state shared between two parties connected by a lossy optical medium. We measure the prepared state by two-mode homodyne tomography, thereby demonstrating that the enhanced phase sensitivity can be exploited without recombining the two parts of the N00N state. Finally, we demonstrate the application of our method to remotely prepare superpositions of coherent states, known as Schrödinger’s cat states.

Suggested Citation

  • Alexander E. Ulanov & Ilya A. Fedorov & Demid Sychev & Philippe Grangier & A. I. Lvovsky, 2016. "Loss-tolerant state engineering for quantum-enhanced metrology via the reverse Hong–Ou–Mandel effect," Nature Communications, Nature, vol. 7(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11925
    DOI: 10.1038/ncomms11925
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms11925
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms11925?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:7:y:2016:i:1:d:10.1038_ncomms11925. 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.