Messanae Universitas Studiorum

Optical mapping of amplitude and phase of excitonic wave functions in a quantum dot system

Di Stefano, Omar and Savasta, Salvatore and Pistone, Giuseppe and Martino, Giovanna and Girlanda, Raffaello (2003) Optical mapping of amplitude and phase of excitonic wave functions in a quantum dot system. Physical Review B, 68 (16). pp. 1-5. ISSN 0163-1829

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    Abstract

    We propose a technique based on a near-field scanning optical microscope, able to measure the spatial variations of both amplitude and phase of the wave functions of the individual eigenstates of a quantum dot system. The proposed scheme is based on a near-field optical microscope working in collection mode combined with a Mach-Zehnder interferometer. We analyze the response function of this device and present microscopic numerical calculations simulating the measurements. These results show that spatially resolved spectroscopy can go beyond measurements of local density of states and open the way to an optical microscopy that, exploiting the coherence properties of light, is able to provide direct and complete quantum-mechanical information on the spatial variations of solid-state mesoscopic quantum eigenfunctions.

    Item Type: Article
    Subjects: M.U.S. - Contributi Scientifici > 02 - Scienze fisiche
    Divisions: UNSPECIFIED
    Depositing User: Stage ICCU
    Date Deposited: 01 Jun 2005
    Last Modified: 20 Sep 2012 10:44
    URI: http://cab.unime.it/mus/id/eprint/324

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