Work

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

Year: 2021

Type: article

Abstract: 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.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.103.115418

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

Institutions: Technische Universität Berlin, Technical University of Denmark

Language: English

Topic: Semiconductor Quantum Structures and Devices

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Deutsche Forschungsgemeinschaft, Danmarks Grundforskningsfond, Danmarks Frie Forskningsfond

Awards: G1372011745, Center for NanoPhotonics (NanoPhoton), SFB 910: Kontrolle selbstorganisierender nichtlinearer Systeme: Theoretische Methoden und Anwendungskonzepte