Theory of phonon-mediated relaxation in doped quantum dot molecules

A. Grodecka-Grad, J. Förstner, Physical Review B 81 (2010).

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A quantum dot molecule doped with a single electron in the presence of diagonal and off-diagonal carrierphonon couplings is studied by means of a nonperturbative quantum kinetic theory. The interaction with acoustic phonons by deformation potential and piezoelectric coupling is taken into account. We show that the phonon-mediated relaxation is fast on a picosecond time scale and is dominated by the usually neglected off-diagonal coupling to the lattice degrees of freedom leading to phonon-assisted electron tunneling. We show that in the parameter regime of current electrical and optical experiments, the microscopic non-Markovian theory has to be employed.
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Physical Review B
Volume
81
Issue
11
Article Number
115305
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Grodecka-Grad A, Förstner J. Theory of phonon-mediated relaxation in doped quantum dot molecules. Physical Review B. 2010;81(11). doi:10.1103/physrevb.81.115305
Grodecka-Grad, A., & Förstner, J. (2010). Theory of phonon-mediated relaxation in doped quantum dot molecules. Physical Review B, 81(11). https://doi.org/10.1103/physrevb.81.115305
@article{Grodecka-Grad_Förstner_2010, title={Theory of phonon-mediated relaxation in doped quantum dot molecules}, volume={81}, DOI={10.1103/physrevb.81.115305}, number={11115305}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Grodecka-Grad, A. and Förstner, Jens}, year={2010} }
Grodecka-Grad, A., and Jens Förstner. “Theory of Phonon-Mediated Relaxation in Doped Quantum Dot Molecules.” Physical Review B 81, no. 11 (2010). https://doi.org/10.1103/physrevb.81.115305.
A. Grodecka-Grad and J. Förstner, “Theory of phonon-mediated relaxation in doped quantum dot molecules,” Physical Review B, vol. 81, no. 11, 2010.
Grodecka-Grad, A., and Jens Förstner. “Theory of Phonon-Mediated Relaxation in Doped Quantum Dot Molecules.” Physical Review B, vol. 81, no. 11, 115305, American Physical Society (APS), 2010, doi:10.1103/physrevb.81.115305.
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