IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v455y2008i7217d10.1038_nature07332.html
   My bibliography  Save this article

Squeezing and entanglement in a Bose–Einstein condensate

Author

Listed:
  • J. Estève

    (Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany)

  • C. Gross

    (Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany)

  • A. Weller

    (Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany)

  • S. Giovanazzi

    (Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany)

  • M. K. Oberthaler

    (Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany)

Abstract

Bose–Einstein condensates: feeling the squeeze The standard quantum limit defines the performance of the best available measurement devices for quantities such as time or position. Many of these sensors are interferometers in which the standard quantum limit can be overcome by using quantum-entangled states (in particular, spin squeezed states) at the two input ports. A team from the University of Heidelberg's Kirchhoff Institute for Physics now demonstrates spin squeezed states suitable for atomic interferometry by splitting a Bose–Einstein condensate into a few parts using an optical lattice potential. The measurements imply entanglement between the particles, a resource that would allow a precision gain of 3.8 dB over the standard quantum limit for interferometric measurements.

Suggested Citation

  • J. Estève & C. Gross & A. Weller & S. Giovanazzi & M. K. Oberthaler, 2008. "Squeezing and entanglement in a Bose–Einstein condensate," Nature, Nature, vol. 455(7217), pages 1216-1219, October.
    • Handle: RePEc:nat:nature:v:455:y:2008:i:7217:d:10.1038_nature07332
    DOI: 10.1038/nature07332
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature07332
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature07332?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
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Yink Loong Len & Tuvia Gefen & Alex Retzker & Jan Kołodyński, 2022. "Quantum metrology with imperfect measurements," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    2. Jordyn Hales & Utkarsh Bajpai & Tongtong Liu & Denitsa R. Baykusheva & Mingda Li & Matteo Mitrano & Yao Wang, 2023. "Witnessing light-driven entanglement using time-resolved resonant inelastic X-ray scattering," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

    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:nature:v:455:y:2008:i:7217:d:10.1038_nature07332. 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.