• Login
    View Item 
    •   ResearchSpace Home
    • College of Agriculture, Engineering and Science
    • School of Chemistry and Physics
    • Physics
    • Masters Degrees (Physics)
    • View Item
    •   ResearchSpace Home
    • College of Agriculture, Engineering and Science
    • School of Chemistry and Physics
    • Physics
    • Masters Degrees (Physics)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Simple qubit systems in bosonic baths.

    Thumbnail
    View/Open
    Thesis (802.0Kb)
    Date
    2013-10-03
    Author
    Pumulo, Nathan.
    Metadata
    Show full item record
    Abstract
    The study is focused on the thermal entanglement of spin chains. Chains consisting of two and three qubits are considered. These chains are considered open because they are coupled to bosonic baths at different temperatures. The baths represent the environment. The dynamics of these open systems are examined as are the effects of different parameters - such as bath temperature - on the entanglement of the spins. The measure of entanglement used in these cases is the concurrence. Comparisons are made between a model that assumes a strong spinspin interaction and one that assumes a weak one. In all these cases, analytical solutions for the system dynamics are presented. It is found that at large times, all systems converge to a state that depends only on bath temperature. It is also found that increases in bath temperatures diminish the entanglement between spins and that at high enough temperatures the entanglement vanishes altogether. The time and temperature dependence of the entanglement is different for the two models that are studied.
    URI
    http://hdl.handle.net/10413/9659
    Collections
    • Masters Degrees (Physics) [119]

    DSpace software copyright © 2002-2013  Duraspace
    Contact Us | Send Feedback
    Theme by 
    @mire NV
     

     

    Browse

    All of ResearchSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsAdvisorsTypeThis CollectionBy Issue DateAuthorsTitlesSubjectsAdvisorsType

    My Account

    LoginRegister

    DSpace software copyright © 2002-2013  Duraspace
    Contact Us | Send Feedback
    Theme by 
    @mire NV