IDEAS home Printed from https://ideas.repec.org/a/eee/phsmap/v402y2014icp209-215.html
   My bibliography  Save this article

Deviations from reversible dynamics in a qubit–oscillator system coupled to a very small environment

Author

Listed:
  • Vidiella-Barranco, A.

Abstract

In this contribution it is considered a simple and solvable model consisting of a qubit in interaction with an oscillator exposed to a very small “environment” (a second qubit). An isolated qubit–oscillator system having the oscillator initially in one of its energy eigenstates exhibits Rabi oscillations, an evidence of coherent quantum behaviour. It is shown here in which way the coupling to a small “environment” disrupts such regular behaviour, leading to a quasi-periodic dynamics for the qubit linear entropy. In particular, it is found that the linear entropy is very sensitive to the amount of mixedness of the “environment”. For completeness, fluctuations in the oscillator energy are also taken into account.

Suggested Citation

  • Vidiella-Barranco, A., 2014. "Deviations from reversible dynamics in a qubit–oscillator system coupled to a very small environment," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 402(C), pages 209-215.
    • Handle: RePEc:eee:phsmap:v:402:y:2014:i:c:p:209-215
    DOI: 10.1016/j.physa.2014.02.004
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0378437114000958
    Download Restriction: Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000
    File URL: https://libkey.io/10.1016/j.physa.2014.02.004?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.

    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:eee:phsmap:v:402:y:2014:i:c:p:209-215. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/physica-a-statistical-mechpplications/ .

    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.