Mr
Lucas Rickert
(Technische Universität Berlin, Germany)
We present our recent work in realizing fiber-pigtailed quantum light sources based on Purcell-enhanced semiconductor quantum dot (QD) emission in a hybrid circular Bragg grating (hCBG) cavity.
We employ a deterministic QD integration-method resulting in experimentally observed Purcell enhancement of >25, corresponding to <30 ps QD lifetimes. We show the direct effect of the strongly reduced radiative lifetime on two-photon interference visibilities both with (quasi-)resonant excitation methods and in the case of elevated temperatures, showing a clear benefit of high Purcell enhancement in the case of present inhomogenous broadening. We furthermore show that the significantly reduced lifetime allows for optical excitation with excitation frequencies in excess of 1.2 GHz, indicating that these highly Purcell enhanced QD-cavity light sources pave the way to indistinguishable photon emission at GHz clock-rates.
Mr
Lucas Rickert
(Technische Universität Berlin, Germany)
Dr
Kinga Zolnacz
(Wroclaw University of Science and Technology, Poland)
Mr
Daniel Vajner
(Technische Universität Berlin, Germany)
Mr
Martin v. Helversen
(Technische Universität Berlin, Germany)
Mr
Johannes Schall
(Technische Universität Berlin, Germany)
Dr
Sven Rodt
(Technische Universität Berlin, Germany)
Prof.
Stephan Reitzenstein
(Technische Universität Berlin, Germany)
Mr
Hanqing Liu
(Chinese Academy of Sciences, Beijing, China)
Dr
Shulun Li
(Chinese Academy of Sciences, Beijing, China)
Prof.
Haiqiao Ni
(Chinese Academy of Sciences, Beijing, China)
Prof.
Zhichuan Niu
(Chinese Academy of Sciences, Beijing, China)
Dr
Anna Musial
(Wroclaw University of Science and Technology, Poland)
Prof.
Grzegorz Sek
(Wroclaw University of Science and Technology, Poland)
Dr
Tobias Heindel
(Technische Universität Berlin, Germany)
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