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Florian Hornung

MSc.

PhD-Student
Institut für Halbleiteroptik und Funktionelle Grenzflächen
Semiconductor Optics Group

Contact

+49 711 685 63888
Email

Allmandring 3
70569 Stuttgart
Deutschland
Room: 1.009

Publications

2024
1. Hornung, F., Pfister, U., Bauer, S., Cyrlyson’s, D. R., Wang, D., Vijayan, P., Garcia Jr., A. J., Covre da Silva, S. F., Jetter, M., Portalupi, S. L., Rastelli, A., & Michler, P. (2024). Highly Indistinguishable Single Photons from Droplet-Etched GaAs Quantum Dots Integrated in Single-Mode Waveguides and Beamsplitters. Nano Lett., 24(4), Article 4. https://doi.org/10.1021/acs.nanolett.3c04010
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  BibTeX
  @article{hornungihfghighly, author = {Hornung, Florian and Pfister, Ulrich and Bauer, Stephanie and Cyrlyson’s, Dee Rocking and Wang, Dongze and Vijayan, Ponraj and Garcia Jr., Ailton J. and Covre da Silva, Saimon Filipe and Jetter, Michael and Portalupi, Simone L. and Rastelli, Armando and Michler, Peter}, doi = {10.1021/acs.nanolett.3c04010}, journal = {Nano Lett.}, language = {engl}, month = {01}, number = 4, pages = {1184–1190}, title = {Highly Indistinguishable Single Photons from Droplet-Etched GaAs Quantum Dots Integrated in Single-Mode Waveguides and Beamsplitters}, url = {https://pubs.acs.org/doi/full/10.1021/acs.nanolett.3c04010}, volume = 24, year = 2024 }
  Link
  https://pubs.acs.org/doi/full/10.1021/acs.nanolett.3c04010
2023
1. Nawrath, C., Joos, R., Kolatschek, S., Bauer, S., Pruy, P., Hornung, F., Fischer, J., Huang, J., Vijayan, P., Sittig, R., Jetter, M., Portalupi, S. L., & Michler, P. (2023). Bright Source of Purcell-Enhanced, Triggered, Single Photons in the Telecom C-Band. Advanced Quantum Technologies. https://doi.org/10.1002/qute.202300111
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  @article{nawrath2023bright, abstract = {Several emission features mark semiconductor quantum dots as promisingnon-classical light sources for prospective quantum implementations. Forlong-distance transmission and Si-based on-chip processing, the possibility tomatch the telecom C-band is decisive, while source brightness and highsingle-photon purity are key features in virtually any quantumimplementation. An InAs/InGaAs/GaAs quantum dot emitting in the telecomC-band coupled to a circular Bragg grating is presented here. This cavitystructure stands out due to its high broadband collection efficiency and highattainable Purcell factors. Here, simultaneously high brightness with afiber-coupled single-photon count rate of 13.9 MHz for an excitationrepetition rate of 228 MHz (first-lens single-photon collection efficiency≈17%for NA=0.6), while maintaining a low multi-photon contribution ofg(2)(0)=0.0052 is demonstrated. Moreover, the compatibility withtemperatures of up to 40 K attainable with compact cryo coolers, furtherunderlines the suitability for out-of-the-lab implementations}, author = {Nawrath, Cornelius and Joos, Raphael and Kolatschek, Sascha and Bauer, Stephanie and Pruy, Pascal and Hornung, Florian and Fischer, Julius and Huang, Jiasheng and Vijayan, Ponraj and Sittig, Robert and Jetter, Michael and Portalupi, Simone Luca and Michler, Peter}, issn = {2511-9044}, journal = {Advanced Quantum Technologies}, month = {08}, title = {Bright Source of Purcell-Enhanced, Triggered, Single Photons in the Telecom C-Band}, url = {https://doi.org/10.1002/qute.202300111}, year = 2023 }
  Link
  https://doi.org/10.1002/qute.202300111
2020
1. Hepp, S., Hornung, F., Bauer, S., Hesselmeier, E., Yuan, X., Jetter, M., Portalupi, S. L., Rastelli, A., & Michler, P. (2020). Purcell-enhanced single-photon emission from a strain-tunable quantum dot in a cavity-waveguide device. Appl. Phys. Lett., 117(25), Article 25. https://doi.org/10.1063/5.0033213
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  @article{hepp2020purcellenhanced, abstract = {On-chip quantum photonics is a promising route toward the implementation of complex photonic architectures on a small footprint. Therefore, different photonic components demonstrated for off-chip o...}, author = {Hepp, Stefan and Hornung, Florian and Bauer, Stephanie and Hesselmeier, Erik and Yuan, Xueyong and Jetter, Michael and Portalupi, Simone L. and Rastelli, Armando and Michler, Peter}, booktitle = {Applied Physics Letters}, comment = {doi: 10.1063/5.0033213}, doi = {10.1063/5.0033213}, issn = {00036951}, journal = {Appl. Phys. Lett.}, month = {12}, number = 25, pages = {254002--}, privnote = {doi: 10.1063/5.0033213}, publisher = {American Institute of Physics}, title = {Purcell-enhanced single-photon emission from a strain-tunable quantum dot in a cavity-waveguide device}, url = {https://doi.org/10.1063/5.0033213}, volume = 117, year = 2020 }
  Link
  https://doi.org/10.1063/5.0033213
2018
1. Schwartz, M., Schmidt, E., Rengstl, U., Hornung, F., Hepp, S., Portalupi, S. L., llin, K., Jetter, M., Siegel, M., & Michler, P. (2018). Fully On-Chip Single-Photon Hanbury-Brown and Twiss Experiment on a Monolithic Semiconductor–Superconductor Platform.
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  @article{noauthororeditor, author = {Schwartz, Mario and Schmidt, Ekkehart and Rengstl, Ulrich and Hornung, Florian and Hepp, Stefan and Portalupi, Simone L. and llin, Konstantin and Jetter, Michael and Siegel, Michael and Michler, Peter}, title = {Fully On-Chip Single-Photon Hanbury-Brown and Twiss Experiment on a Monolithic Semiconductor–Superconductor Platform}, year = 2018 }
2. Hepp, S., Bauer, S., Hornung, F., Schwartz, M., Portalupi, S. L., Jetter, M., & Michler, P. (2018). Bragg grating cavities embedded into nano-photonic waveguides for Purcell enhanced quantum dot emission. Opt. Express, 26(23), Article 23. https://doi.org/10.1364/OE.26.030614
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  @article{Hepp:18, abstract = {In the present work, we demonstrate the fabrication and optical properties of Bragg grating cavities that are directly integrated into ridge waveguides along with the Purcell enhanced emission from integrated quantum dots. Measured Q-factors up to 4600 are observed in combination with resonances of the fundamental mode within a \&\#x000B1; 0.11 nm range along the full fabricated chip. The measured Purcell enhancement up to a factor of 3.5 \&\#x000B1; 0.5 shows the potential utility for state-of-the-art on-chip quantum optical experiments as realized in off-chip implementations. Our measurements are fully supported via FDTD simulations giving a theoretical Purcell enhancement up to a factor of 20 with a highly directional \&\#x003B2;dir-factor of 70 \&\#x00025;. The straightforward upscaling and robust design of the investigated Bragg grating cavity in combination with a substantial Purcell enhancement represents a major step towards large scale on-chip quantum photonic circuits.}, author = {Hepp, Stefan and Bauer, Stephanie and Hornung, Florian and Schwartz, Mario and Portalupi, Simone L. and Jetter, Michael and Michler, Peter}, doi = {10.1364/OE.26.030614}, journal = {Opt. Express}, month = {11}, number = 23, pages = {30614--30622}, publisher = {OSA}, title = {Bragg grating cavities embedded into nano-photonic waveguides for Purcell enhanced quantum dot emission}, url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-26-23-30614}, volume = 26, year = 2018 }
  Link
  http://www.opticsexpress.org/abstract.cfm?URI=oe-26-23-30614

Florian Hornung

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2024

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2023

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2020

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2018

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Florian Hornung

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Publications

2024

BibTeX

Link

2023

BibTeX

Link

2020

BibTeX

Link

2018

BibTeX

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