TY - JOUR
T1 - Coherent driving of direct and indirect excitons in a quantum dot molecule
AU - Bopp, Frederik
AU - Schall, Johannes
AU - Bart, Nikolai
AU - Vögl, Florian
AU - Cullip, Charlotte
AU - Sbresny, Friedrich
AU - Boos, Katarina
AU - Thalacker, Christopher
AU - Lienhart, Michelle
AU - Rodt, Sven
AU - Reuter, Dirk
AU - Ludwig, Arne
AU - Wieck, Andreas D.
AU - Reitzenstein, Stephan
AU - Müller, Kai
AU - Finley, Jonathan J.
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/4/15
Y1 - 2023/4/15
N2 - Quantum dot molecules (QDMs) are one of the few quantum light sources that promise deterministic generation of one- and two-dimensional photonic graph states. The proposed protocols rely on coherent excitation of the tunnel-coupled and spatially indirect exciton states. Here, we demonstrate power-dependent Rabi oscillations of direct excitons, spatially indirect excitons, and excitons with a hybridized electron wave function. An off-resonant detection technique based on phonon-mediated state transfer allows for spectrally filtered detection under resonant excitation. Applying a gate voltage to the QDM device enables a continuous transition between direct and indirect excitons and, thereby, control of the overlap of the electron and hole wave function. This does not only vary the Rabi frequency of the investigated transition by a factor of ≈3, but also allows to optimize graph state generation in terms of optical pulse power and reduction of radiative lifetimes.
AB - Quantum dot molecules (QDMs) are one of the few quantum light sources that promise deterministic generation of one- and two-dimensional photonic graph states. The proposed protocols rely on coherent excitation of the tunnel-coupled and spatially indirect exciton states. Here, we demonstrate power-dependent Rabi oscillations of direct excitons, spatially indirect excitons, and excitons with a hybridized electron wave function. An off-resonant detection technique based on phonon-mediated state transfer allows for spectrally filtered detection under resonant excitation. Applying a gate voltage to the QDM device enables a continuous transition between direct and indirect excitons and, thereby, control of the overlap of the electron and hole wave function. This does not only vary the Rabi frequency of the investigated transition by a factor of ≈3, but also allows to optimize graph state generation in terms of optical pulse power and reduction of radiative lifetimes.
UR - http://www.scopus.com/inward/record.url?scp=85158911609&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.107.165426
DO - 10.1103/PhysRevB.107.165426
M3 - Article
AN - SCOPUS:85158911609
SN - 2469-9950
VL - 107
JO - Physical Review B
JF - Physical Review B
IS - 16
M1 - 165426
ER -