Multipartite entangled states in coupled quantum dots and cavity QED

Xiaoguang Wang, Mang Feng, Barry C. Sanders

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    We investigate the generation of multipartite entangled state in a system of N quantum dots embedded in a microcavity and examine the emergence of genuine multipartite entanglement by three different characterizations of entanglement. At certain times of dynamical evolution one can generate multipartite entangled coherent exciton states or multiqubit W states by initially preparing the cavity field in a superposition of coherent states or the Fock state with one photon, respectively. Finally, we study environmental effects on multipartite entanglement generation and find that the decay rate for the entanglement is proportional to the number of excitons.
    Original languageEnglish
    Pages (from-to)022302-1-022302-8
    Number of pages8
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Issue number2
    Publication statusPublished - 2003

    Bibliographical note

    Copyright 2003 by The American Physical Society. Reprinted from Physical review A.


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