S
Stefan Gerhardt
Researcher at University of Würzburg
Publications - 19
Citations - 966
Stefan Gerhardt is an academic researcher from University of Würzburg. The author has contributed to research in topics: Quantum dot & Photon. The author has an hindex of 11, co-authored 19 publications receiving 754 citations. Previous affiliations of Stefan Gerhardt include Conrad Hotels.
Papers
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Journal ArticleDOI
Towards optimal single-photon sources from polarized microcavities
Hui Wang,Yu-Ming He,Tung Hsun Chung,Hai Hu,Ying Yu,Si Chen,Xing Ding,Ming-Cheng Chen,Jian Qin,Xiaoxia Yang,Run-Ze Liu,Zhao-Chen Duan,Jin-Peng Li,Stefan Gerhardt,K. Winkler,Jonathan Jurkat,Lin-Jun Wang,Niels Gregersen,Yongheng Huo,Qing Dai,Siyuan Yu,Sven Höfling,Sven Höfling,Chao-Yang Lu,Jian-Wei Pan +24 more
TL;DR: In this article, a polarization-orthogonal excitation collection scheme is designed to minimize the polarization filtering loss under resonant excitation, achieving a single-photon efficiency of 0.60.
Journal ArticleDOI
Highly indistinguishable on-demand resonance fluorescence photons from a deterministic quantum dot micropillar device with 75 $\%$ extraction efficiency
Sebastian Unsleber,Yu-Ming He,Sebastian Maier,Stefan Gerhardt,Chao-Yang Lu,Jian-Wei Pan,Martin Kamp,Christian Schneider,Sven Höfling +8 more
TL;DR: In this paper, a single photon emission generated via pulsed, resonance fluorescence conditions from a single quantum dot (QD) deterministically centered in a micropillar cavity device via cryogenic optical lithography was observed.
Journal ArticleDOI
Towards optimal single-photon sources from polarized microcavities
Hui Wang,Yu-Ming He,Tung Hsun Chung,Hai Hu,Ying Yu,Si Chen,Xing Ding,Ming-Cheng Chen,Jian Qin,Xiaoxia Yang,Run-Ze Liu,Zhao-Chen Duan,Jin-Peng Li,Stefan Gerhardt,K. Winkler,Jonathan Jurkat,Lin-Jun Wang,Niels Gregersen,Yongheng Huo,Qing Dai,Siyuan Yu,Sven Hoefling,Chao-Yang Lu,Jian-Wei Pan +23 more
TL;DR: In this article, a polarization-orthogonal excitation-collection scheme is designed to minimize the polarization-filtering loss under resonant excitation, and the authors demonstrate a polarized single-photon efficiency of 0.60+/-0.02 (0.56+/- 0.02), a singlephoton purity of 0975+/-
Journal ArticleDOI
Highly indistinguishable on-demand resonance fluorescence photons from a deterministic quantum dot micropillar device with 74% extraction efficiency.
Sebastian Unsleber,Yu-Ming He,Stefan Gerhardt,Sebastian Maier,Chao-Yang Lu,Jian-Wei Pan,Niels Gregersen,Martin Kamp,Christian Schneider,Sven Höfling +9 more
TL;DR: The observation of bright single photon emission generated via pulsed, resonance fluorescence conditions from a single quantum dot (QD) deterministically centered in a micropillar cavity device via cryogenic optical lithography is reported on.
Journal ArticleDOI
Deterministic implementation of a bright, on-demand single-photon source with near-unity indistinguishability via quantum dot imaging
Yu-Ming He,Jin Liu,Sebastian Maier,Monika Emmerling,Stefan Gerhardt,Marcelo Davanco,Kartik Srinivasan,Christian Schneider,Sven Höfling +8 more
TL;DR: In this article, the authors discuss a possible platform for scaling up the number of implemented devices within a given processing time, relying on the application of nanoscale quantum dot imaging to the pillar microcavity architecture.