Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session A54: Fundamental Light-Matter Interactions
8:00 AM–10:36 AM,
Monday, March 4, 2024
Room: 203AB
Sponsoring
Unit:
DAMOP
Chair: Rimsha Shaikh, NED University of Engineering and Technology
Abstract: A54.00002 : Coherent dynamics of the swing-up excitation technique*
8:12 AM–8:24 AM
Presenter:
Katarina Boos
(TU Munich)
Authors:
Katarina Boos
(TU Munich)
Friedrich Sbresny
(TU Munich)
Sang Kyu Kim
(TU Munich)
Malte Kremser
(TU Munich)
Hubert Riedl
(TU Munich)
Frederik W Bopp
(TU Munich)
William Rauhaus
(TU Munich)
Bianca Scaparra
(TU Munich)
Klaus D Jöns
(Paderborn University)
Jonathan J Finley
(TU Munich)
Lukas Hanschke
(Paderborn University)
Kai Muller
(TU Munich)
In this contribution, we study the coherent dynamics of the swing-up technique with an InGaAs quantum dot. We explore the multidimensional excitation parameter space to identify optimal conditions for high-fidelity population inversion, revealing distinct resonances and assessing parameter interdependence - both in experiment and numerical simulation.
Furthermore, we analyze the single-photon performance of our two-level system under swing-up excitation, finding near-perfect single-photon purity with a raw value of g(2)(0)= 0.033. In contrast, the measured indistinguishability is limited to vHOM= 0.439 which can be attributed to the impact of the high laser intensities on the semiconductor environment of the quantum dot. We conclude that the method is very promising, although further engineering is required to make it suitable for applications.
*We gratefully acknowledge financial support from the German Federal Ministry of Education and Re- search via the funding program Photonics Research Germany (Contract No. 13N14846), the European Union's Horizon 2020 research and innovation program under Grants Agreement No. 862035 (QLUSTER) and No. 899814 (Qurope), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via the projects MQCL (INST 95/1220-1), CNLG (MU 4215/4-1), TRR 142 (grant No. 231447078), and Germany's Excellence Strategy (MCQST, EXC-2111, 390814868), the TUM Institute for Advanced Study, the Bavarian State Ministry of Science and Arts via the project EQAP and the Exploring Quantum Matter (ExQM) program funded by the state of Bavaria.
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