Photon-assisted transport through a double quantum dot with a time-dependent interdot barrier

We study transport through two ultrasmall quantum dots with discrete energy levels to which a time-dependent field is applied (e.g., microwaves). The AC field causes photon-assisted tunneling and also transitions between discrete energy levels of the dots. Using the Floquet-matrix technique we propo...

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Bibliographic Details
Published inPhysica. E, Low-dimensional systems & nanostructures Vol. 1; no. 1-4; pp. 216 - 218
Main Authors Brune, Ph, Bruder, C., Schoeller, H.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 19.01.1997
Subjects
Photon-assisted transport
Quantum dot
Quantum dot
Photon-assisted transport
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Summary:We study transport through two ultrasmall quantum dots with discrete energy levels to which a time-dependent field is applied (e.g., microwaves). The AC field causes photon-assisted tunneling and also transitions between discrete energy levels of the dots. Using the Floquet-matrix technique we propose an electron pump consisting of two serially coupled single-level quantum dots with a time-dependent interdot barrier. We compare our results to the recent experiments by Fujisawa and Tarucha.
ISSN:1386-9477
1873-1759
DOI:10.1016/S1386-9477(97)00046-5