Unidirectional quantum transport in optically driven V-type quantum dot chains

Oliver Kaestle*, Emil Vosmar Denning, Jesper Mørk, Andreas Knorr, Alexander Carmele

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    We predict a mechanism for achieving complete population inversion in a continuously driven InAs/GaAs semiconductor quantum dot featuring V-type transitions. This highly nonequilibrium steady state is enabled by the interplay between V-type interband transitions and a non-Markovian decoherence mechanism, introduced by acoustic phonons. The population trapping mechanism is generalized to a chain of coupled emitters. Exploiting the population inversion, we predict unidirectional excitation transport from one end of the chain to the other without external bias, independent of the unitary interdot coupling mechanism.

    Original languageEnglish
    Article number115418
    JournalPhysical Review B
    Issue number11
    Number of pages12
    Publication statusPublished - 15 Mar 2021

    Bibliographical note

    Funding Information:
    O.K., A.K., and A.C. acknowledge support from the Deutsche Forschungsgemeinschaft (DFG) through SFB 910 project B1 (Project No. 163436311). E.V.D. and J.M. acknowledge support from the Danish National Research Foundation (Grant No. DNRF147). E.V.D. acknowledges funding from the Independent Research Fund Denmark.

    Publisher Copyright:
    © 2021 American Physical Society.


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