--- _id: '34136' author: - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Yuriy full_name: Shkuratov, Yuriy last_name: Shkuratov - first_name: Samer full_name: Alhaddad, Samer id: '42456' last_name: Alhaddad - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Grynko Y, Shkuratov Y, Alhaddad S, Förstner J. Light backscattering from numerical analog of planetary regoliths. In: Copernicus GmbH; 2022. doi:10.5194/epsc2022-151' apa: Grynko, Y., Shkuratov, Y., Alhaddad, S., & Förstner, J. (2022). Light backscattering from numerical analog of planetary regoliths. 16th Europlanet Science Congress 2022, Granada, Spain. https://doi.org/10.5194/epsc2022-151 bibtex: '@inproceedings{Grynko_Shkuratov_Alhaddad_Förstner_2022, title={Light backscattering from numerical analog of planetary regoliths}, DOI={10.5194/epsc2022-151}, publisher={Copernicus GmbH}, author={Grynko, Yevgen and Shkuratov, Yuriy and Alhaddad, Samer and Förstner, Jens}, year={2022} }' chicago: Grynko, Yevgen, Yuriy Shkuratov, Samer Alhaddad, and Jens Förstner. “Light Backscattering from Numerical Analog of Planetary Regoliths.” Copernicus GmbH, 2022. https://doi.org/10.5194/epsc2022-151. ieee: 'Y. Grynko, Y. Shkuratov, S. Alhaddad, and J. Förstner, “Light backscattering from numerical analog of planetary regoliths,” presented at the 16th Europlanet Science Congress 2022, Granada, Spain, 2022, doi: 10.5194/epsc2022-151.' mla: Grynko, Yevgen, et al. Light Backscattering from Numerical Analog of Planetary Regoliths. Copernicus GmbH, 2022, doi:10.5194/epsc2022-151. short: 'Y. Grynko, Y. Shkuratov, S. Alhaddad, J. Förstner, in: Copernicus GmbH, 2022.' conference: end_date: 2022-09-23 location: Granada, Spain name: 16th Europlanet Science Congress 2022 start_date: 2022-09-18 date_created: 2022-11-23T12:03:29Z date_updated: 2026-01-17T16:42:35Z ddc: - '530' department: - _id: '61' - _id: '230' doi: 10.5194/epsc2022-151 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2022-11-23T12:07:10Z date_updated: 2022-11-23T12:07:10Z file_id: '34137' file_name: 2022-09 Grynko - EPSC2022 conference -151-print.pdf file_size: 645190 relation: main_file file_date_updated: 2022-11-23T12:07:10Z has_accepted_license: '1' keyword: - tet_topic_scattering language: - iso: eng oa: '1' project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication_status: published publisher: Copernicus GmbH status: public title: Light backscattering from numerical analog of planetary regoliths type: conference_abstract user_id: '158' year: '2022' ... --- _id: '30210' abstract: - lang: eng text: Lithium niobate on insulator (LNOI) has a great potential for photonic integrated circuits, providing substantial versatility in design of various integrated components. To properly use these components in the implementation of different quantum protocols, photons with different properties are required. In this paper, we theoretically demonstrate a flexible source of correlated photons built on the LNOI waveguide of a special geometry. This source is based on the parametric down-conversion (PDC) process, in which the signal and idler photons are generated at the telecom wavelength and have different spatial profiles and polarizations, but the same group velocities. Distinguishability in polarizations and spatial profiles facilitates the routing and manipulating individual photons, while the equality of their group velocities leads to the absence of temporal walk-off between photons. We show how the spectral properties of the generated photons and the number of their frequency modes can be controlled depending on the pump characteristics and the waveguide length. Finally, we discuss special regimes, in which narrowband light with strong frequency correlations and polarization-entangled Bell states are generated at the telecom wavelength. author: - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Alessandro full_name: Ferreri, Alessandro id: '65609' last_name: Ferreri - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Maximilian full_name: Albert, Maximilian last_name: Albert - first_name: Cedrik full_name: Meier, Cedrik id: '20798' last_name: Meier orcid: https://orcid.org/0000-0002-3787-3572 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Polina R. full_name: Sharapova, Polina R. id: '60286' last_name: Sharapova citation: ama: 'Ebers L, Ferreri A, Hammer M, et al. Flexible source of correlated photons based on LNOI rib waveguides. Journal of Physics: Photonics. 2022;4:025001. doi:10.1088/2515-7647/ac5a5b' apa: 'Ebers, L., Ferreri, A., Hammer, M., Albert, M., Meier, C., Förstner, J., & Sharapova, P. R. (2022). Flexible source of correlated photons based on LNOI rib waveguides. Journal of Physics: Photonics, 4, 025001. https://doi.org/10.1088/2515-7647/ac5a5b' bibtex: '@article{Ebers_Ferreri_Hammer_Albert_Meier_Förstner_Sharapova_2022, title={Flexible source of correlated photons based on LNOI rib waveguides}, volume={4}, DOI={10.1088/2515-7647/ac5a5b}, journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Ebers, Lena and Ferreri, Alessandro and Hammer, Manfred and Albert, Maximilian and Meier, Cedrik and Förstner, Jens and Sharapova, Polina R.}, year={2022}, pages={025001} }' chicago: 'Ebers, Lena, Alessandro Ferreri, Manfred Hammer, Maximilian Albert, Cedrik Meier, Jens Förstner, and Polina R. Sharapova. “Flexible Source of Correlated Photons Based on LNOI Rib Waveguides.” Journal of Physics: Photonics 4 (2022): 025001. https://doi.org/10.1088/2515-7647/ac5a5b.' ieee: 'L. Ebers et al., “Flexible source of correlated photons based on LNOI rib waveguides,” Journal of Physics: Photonics, vol. 4, p. 025001, 2022, doi: 10.1088/2515-7647/ac5a5b.' mla: 'Ebers, Lena, et al. “Flexible Source of Correlated Photons Based on LNOI Rib Waveguides.” Journal of Physics: Photonics, vol. 4, IOP Publishing, 2022, p. 025001, doi:10.1088/2515-7647/ac5a5b.' short: 'L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R. Sharapova, Journal of Physics: Photonics 4 (2022) 025001.' date_created: 2022-03-07T09:51:50Z date_updated: 2025-12-16T11:31:04Z department: - _id: '61' - _id: '230' - _id: '429' - _id: '15' - _id: '569' - _id: '170' - _id: '287' - _id: '35' - _id: '34' doi: 10.1088/2515-7647/ac5a5b intvolume: ' 4' keyword: - tet_topic_waveguide language: - iso: eng page: '025001' project: - _id: '56' name: 'TRR 142 - C: TRR 142 - Project Area C' - _id: '75' name: 'TRR 142 - C5: TRR 142 - Subproject C5' - _id: '72' name: 'TRR 142 - C2: TRR 142 - Subproject C2' - _id: '53' name: 'TRR 142: TRR 142' - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' publication: 'Journal of Physics: Photonics' publication_identifier: issn: - 2515-7647 publication_status: published publisher: IOP Publishing related_material: link: - description: Corrigendum for table C1 relation: erratum url: https://doi.org/10.1088/2515-7647/acc70c status: public title: Flexible source of correlated photons based on LNOI rib waveguides type: journal_article user_id: '16199' volume: 4 year: '2022' ... --- _id: '33509' abstract: - lang: eng text: In this publication a novel method for far-field prediction from magnetic Huygens box data based on the boundary element method (BEM) is presented. Two examples are considered for the validation of this method. The first example represents an electric dipole so that the obtained calculations can be compared to an analytical solution. As a second example, a printed circuit board is considered and the calculated far-field is compared to a fullwave simulation. In both cases, the calculations for different field integral equations are under comparison, and the results indicate that the presented method performs very well with a combined field integral equation, for the specified problem, when only magnetic Huygens box data is given. author: - first_name: Christoph full_name: Marschalt, Christoph last_name: Marschalt - first_name: Dominik full_name: Schroder, Dominik last_name: Schroder - first_name: Sven full_name: Lange, Sven id: '38240' last_name: Lange orcid: '0009-0007-9150-2266 ' - first_name: Ulrich full_name: Hilleringmann, Ulrich id: '20179' last_name: Hilleringmann - first_name: Christian full_name: Hedayat, Christian last_name: Hedayat - first_name: Harald full_name: Kuhn, Harald last_name: Kuhn - first_name: Denis full_name: Sievers, Denis last_name: Sievers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Marschalt C, Schroder D, Lange S, et al. Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method. In: 2022 Smart Systems Integration (SSI). IEEE; 2022. doi:10.1109/ssi56489.2022.9901431' apa: Marschalt, C., Schroder, D., Lange, S., Hilleringmann, U., Hedayat, C., Kuhn, H., Sievers, D., & Förstner, J. (2022). Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method. 2022 Smart Systems Integration (SSI). 2022 Smart Systems Integration (SSI), Grenoble, France. https://doi.org/10.1109/ssi56489.2022.9901431 bibtex: '@inproceedings{Marschalt_Schroder_Lange_Hilleringmann_Hedayat_Kuhn_Sievers_Förstner_2022, place={Grenoble, France}, title={Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method}, DOI={10.1109/ssi56489.2022.9901431}, booktitle={2022 Smart Systems Integration (SSI)}, publisher={IEEE}, author={Marschalt, Christoph and Schroder, Dominik and Lange, Sven and Hilleringmann, Ulrich and Hedayat, Christian and Kuhn, Harald and Sievers, Denis and Förstner, Jens}, year={2022} }' chicago: 'Marschalt, Christoph, Dominik Schroder, Sven Lange, Ulrich Hilleringmann, Christian Hedayat, Harald Kuhn, Denis Sievers, and Jens Förstner. “Far-Field Calculation from Magnetic Huygens Box Data Using the Boundary Element Method.” In 2022 Smart Systems Integration (SSI). Grenoble, France: IEEE, 2022. https://doi.org/10.1109/ssi56489.2022.9901431.' ieee: 'C. Marschalt et al., “Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method,” presented at the 2022 Smart Systems Integration (SSI), Grenoble, France, 2022, doi: 10.1109/ssi56489.2022.9901431.' mla: Marschalt, Christoph, et al. “Far-Field Calculation from Magnetic Huygens Box Data Using the Boundary Element Method.” 2022 Smart Systems Integration (SSI), IEEE, 2022, doi:10.1109/ssi56489.2022.9901431. short: 'C. Marschalt, D. Schroder, S. Lange, U. Hilleringmann, C. Hedayat, H. Kuhn, D. Sievers, J. Förstner, in: 2022 Smart Systems Integration (SSI), IEEE, Grenoble, France, 2022.' conference: end_date: 2022-04-28 location: Grenoble, France name: 2022 Smart Systems Integration (SSI) start_date: 2022-04-27 date_created: 2022-10-04T11:31:43Z date_updated: 2024-11-30T19:32:14Z department: - _id: '59' - _id: '61' - _id: '485' doi: 10.1109/ssi56489.2022.9901431 keyword: - Near-Field Scanning - Huygens Box - Boundary Element Method - Method of Moments - tet_topic_hf - tet_enas language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/document/9901431 place: Grenoble, France project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: 2022 Smart Systems Integration (SSI) publication_identifier: eisbn: - 978-1-6654-8849-5 publication_status: published publisher: IEEE status: public title: Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method type: conference user_id: '158' year: '2022' ... --- _id: '21932' abstract: - lang: eng text: Gaussian-beam-like bundles of semi-guided waves propagating in a dielectric slab can excite modes with high-order optical angular momentum supported by a circular fiber. We consider a multimode step-index fiber with a high-index coating, where the waves in the slab are evanescently coupled to the modes of the fiber. Conditions for effective resonant interaction are identified. Based on a hybrid analytical–numerical coupled mode model, our simulations predict that substantial fractions of the input power can be focused into waves with specific orbital angular momentum, of excellent purity, with a clear distinction between degenerate modes with opposite vorticity. author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Hammer M, Ebers L, Förstner J. Resonant evanescent excitation of guided waves with high-order optical angular momentum. Journal of the Optical Society of America B. 2021;38(5):1717. doi:10.1364/josab.422731 apa: Hammer, M., Ebers, L., & Förstner, J. (2021). Resonant evanescent excitation of guided waves with high-order optical angular momentum. Journal of the Optical Society of America B, 38(5), 1717. https://doi.org/10.1364/josab.422731 bibtex: '@article{Hammer_Ebers_Förstner_2021, title={Resonant evanescent excitation of guided waves with high-order optical angular momentum}, volume={38}, DOI={10.1364/josab.422731}, number={5}, journal={Journal of the Optical Society of America B}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2021}, pages={1717} }' chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Resonant Evanescent Excitation of Guided Waves with High-Order Optical Angular Momentum.” Journal of the Optical Society of America B 38, no. 5 (2021): 1717. https://doi.org/10.1364/josab.422731.' ieee: M. Hammer, L. Ebers, and J. Förstner, “Resonant evanescent excitation of guided waves with high-order optical angular momentum,” Journal of the Optical Society of America B, vol. 38, no. 5, p. 1717, 2021. mla: Hammer, Manfred, et al. “Resonant Evanescent Excitation of Guided Waves with High-Order Optical Angular Momentum.” Journal of the Optical Society of America B, vol. 38, no. 5, 2021, p. 1717, doi:10.1364/josab.422731. short: M. Hammer, L. Ebers, J. Förstner, Journal of the Optical Society of America B 38 (2021) 1717. date_created: 2021-04-30T11:54:03Z date_updated: 2022-01-06T06:55:20Z ddc: - '530' department: - _id: '61' - _id: '230' doi: 10.1364/josab.422731 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2021-04-30T11:57:14Z date_updated: 2021-04-30T11:57:14Z file_id: '21933' file_name: oamex.pdf file_size: 1963211 relation: main_file - access_level: local content_type: application/pdf creator: fossie date_created: 2021-04-30T11:59:16Z date_updated: 2021-04-30T11:59:16Z embargo: 2022-05-01 embargo_to: open_access file_id: '21934' file_name: 2021-04 Hammer - JOSA B - Resonant evanescent excitation of guides waves with high-order angular momentum.pdf file_size: 7750006 relation: main_file file_date_updated: 2021-04-30T11:59:16Z has_accepted_license: '1' intvolume: ' 38' issue: '5' keyword: - tet_topic_waveguides language: - iso: eng oa: '1' page: '1717' project: - _id: '56' name: TRR 142 - Project Area C - _id: '53' name: TRR 142 - _id: '75' name: TRR 142 - Subproject C5 publication: Journal of the Optical Society of America B publication_identifier: issn: - 0740-3224 - 1520-8540 publication_status: published status: public title: Resonant evanescent excitation of guided waves with high-order optical angular momentum type: journal_article user_id: '158' volume: 38 year: '2021' ... --- _id: '28196' abstract: - lang: eng text: We show that narrow trenches in a high-contrast silicon-photonics slab can act as lossless power dividers for semi-guided waves. Reflectance and transmittance can be easily configured by selecting the trench width. At sufficiently high angles of incidence, the devices are lossless, apart from material attenuation and scattering due to surface roughness. We numerically simulate a series of devices within the full 0-to-1-range of splitting ratios, for semi-guided plane wave incidence as well as for excitation by focused Gaussian wave bundles. Straightforward cascading of the trenches leads to concepts for 1×M-power dividers and a polarization beam splitter. author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Hammer M, Ebers L, Förstner J. Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. OSA Continuum. 2021;4(12):3081. doi:10.1364/osac.437549 apa: Hammer, M., Ebers, L., & Förstner, J. (2021). Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. OSA Continuum, 4(12), 3081. https://doi.org/10.1364/osac.437549 bibtex: '@article{Hammer_Ebers_Förstner_2021, title={Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics}, volume={4}, DOI={10.1364/osac.437549}, number={12}, journal={OSA Continuum}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2021}, pages={3081} }' chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” OSA Continuum 4, no. 12 (2021): 3081. https://doi.org/10.1364/osac.437549.' ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics,” OSA Continuum, vol. 4, no. 12, p. 3081, 2021, doi: 10.1364/osac.437549.' mla: Hammer, Manfred, et al. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” OSA Continuum, vol. 4, no. 12, 2021, p. 3081, doi:10.1364/osac.437549. short: M. Hammer, L. Ebers, J. Förstner, OSA Continuum 4 (2021) 3081. date_created: 2021-11-30T20:04:57Z date_updated: 2022-11-18T09:58:03Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1364/osac.437549 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2021-11-30T20:07:53Z date_updated: 2021-11-30T20:19:15Z file_id: '28197' file_name: 2021-11 Hammer - OSA Continuum - Trenches.pdf file_size: 6618403 relation: main_file file_date_updated: 2021-11-30T20:19:15Z has_accepted_license: '1' intvolume: ' 4' issue: '12' keyword: - tet_topic_waveguide language: - iso: eng oa: '1' page: '3081' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C publication: OSA Continuum publication_identifier: issn: - 2578-7519 publication_status: published status: public title: Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics type: journal_article user_id: '477' volume: 4 year: '2021' ... --- _id: '23728' abstract: - lang: eng text: We demonstrate the integration of amorphous tungsten silicide superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-principle detection of evanescently coupled photons of 1550 nm wavelength using bidirectional waveguide coupling for two orthogonal polarization directions. We investigate the internal detection efficiency as well as detector absorption using coupling-independent characterization measurements. Furthermore, we describe strategies to improve the yield and efficiency of these devices. article_type: original author: - first_name: Jan Philipp full_name: Höpker, Jan Philipp id: '33913' last_name: Höpker - first_name: Varun B full_name: Verma, Varun B last_name: Verma - first_name: Maximilian full_name: Protte, Maximilian id: '46170' last_name: Protte - first_name: Raimund full_name: Ricken, Raimund last_name: Ricken - first_name: Viktor full_name: Quiring, Viktor last_name: Quiring - first_name: Christof full_name: Eigner, Christof id: '13244' last_name: Eigner orcid: https://orcid.org/0000-0002-5693-3083 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Christine full_name: Silberhorn, Christine id: '26263' last_name: Silberhorn - first_name: Richard P full_name: Mirin, Richard P last_name: Mirin - first_name: Sae full_name: Woo Nam, Sae last_name: Woo Nam - first_name: Tim full_name: Bartley, Tim id: '49683' last_name: Bartley citation: ama: 'Höpker JP, Verma VB, Protte M, et al. Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. Journal of Physics: Photonics. 2021;3:034022. doi:10.1088/2515-7647/ac105b' apa: 'Höpker, J. P., Verma, V. B., Protte, M., Ricken, R., Quiring, V., Eigner, C., Ebers, L., Hammer, M., Förstner, J., Silberhorn, C., Mirin, R. P., Woo Nam, S., & Bartley, T. (2021). Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. Journal of Physics: Photonics, 3, 034022. https://doi.org/10.1088/2515-7647/ac105b' bibtex: '@article{Höpker_Verma_Protte_Ricken_Quiring_Eigner_Ebers_Hammer_Förstner_Silberhorn_et al._2021, title={Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides}, volume={3}, DOI={10.1088/2515-7647/ac105b}, journal={Journal of Physics: Photonics}, author={Höpker, Jan Philipp and Verma, Varun B and Protte, Maximilian and Ricken, Raimund and Quiring, Viktor and Eigner, Christof and Ebers, Lena and Hammer, Manfred and Förstner, Jens and Silberhorn, Christine and et al.}, year={2021}, pages={034022} }' chicago: 'Höpker, Jan Philipp, Varun B Verma, Maximilian Protte, Raimund Ricken, Viktor Quiring, Christof Eigner, Lena Ebers, et al. “Integrated Superconducting Nanowire Single-Photon Detectors on Titanium in-Diffused Lithium Niobate Waveguides.” Journal of Physics: Photonics 3 (2021): 034022. https://doi.org/10.1088/2515-7647/ac105b.' ieee: 'J. P. Höpker et al., “Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides,” Journal of Physics: Photonics, vol. 3, p. 034022, 2021, doi: 10.1088/2515-7647/ac105b.' mla: 'Höpker, Jan Philipp, et al. “Integrated Superconducting Nanowire Single-Photon Detectors on Titanium in-Diffused Lithium Niobate Waveguides.” Journal of Physics: Photonics, vol. 3, 2021, p. 034022, doi:10.1088/2515-7647/ac105b.' short: 'J.P. Höpker, V.B. Verma, M. Protte, R. Ricken, V. Quiring, C. Eigner, L. Ebers, M. Hammer, J. Förstner, C. Silberhorn, R.P. Mirin, S. Woo Nam, T. Bartley, Journal of Physics: Photonics 3 (2021) 034022.' date_created: 2021-09-03T08:04:06Z date_updated: 2022-10-25T07:34:42Z ddc: - '530' department: - _id: '15' - _id: '61' - _id: '230' doi: 10.1088/2515-7647/ac105b file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2021-09-07T07:41:04Z date_updated: 2021-09-07T07:41:04Z file_id: '23825' file_name: 2021-07 Höpker J._Phys._Photonics_3_034022.pdf file_size: 1097820 relation: main_file file_date_updated: 2021-09-07T07:41:04Z has_accepted_license: '1' intvolume: ' 3' language: - iso: eng oa: '1' page: '034022' project: - _id: '53' name: TRR 142 publication: 'Journal of Physics: Photonics' publication_identifier: issn: - 2515-7647 publication_status: published status: public title: Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides type: journal_article user_id: '49683' volume: 3 year: '2021' ... --- _id: '21821' abstract: - lang: eng text: We present a combined experimental and numerical study of the far-field emission properties of optical travelling wave antennas made from low-loss dielectric materials. The antennas considered here are composed of two simple building blocks, a director and a reflector, deposited on a glass substrate. Colloidal quantum dots placed in the feed gap between the two elements serve as internal light source. The emission profile of the antenna is mainly formed by the director while the reflector suppresses backward emission. Systematic studies of the director dimensions as well as variation of antenna material show that the effective refractive index of the director primarily governs the far-field emission pattern. Below cut off, i.e., if the director’s effective refractive index is smaller than the refractive index of the substrate, the main lobe results from leaky wave emission along the director. In contrast, if the director supports a guided mode, the emission predominately originates from the end facet of the director. article_number: '14694' author: - first_name: T. full_name: Leuteritz, T. last_name: Leuteritz - first_name: Henna full_name: Farheen, Henna id: '53444' last_name: Farheen orcid: 0000-0001-7730-3489 - first_name: S. full_name: Qiao, S. last_name: Qiao - first_name: F. full_name: Spreyer, F. last_name: Spreyer - first_name: Christian full_name: Schlickriede, Christian id: '59792' last_name: Schlickriede - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: S. full_name: Linden, S. last_name: Linden citation: ama: Leuteritz T, Farheen H, Qiao S, et al. Dielectric travelling wave antennas for directional light emission. Optics Express. 2021;29(10). doi:10.1364/oe.422984 apa: Leuteritz, T., Farheen, H., Qiao, S., Spreyer, F., Schlickriede, C., Zentgraf, T., Myroshnychenko, V., Förstner, J., & Linden, S. (2021). Dielectric travelling wave antennas for directional light emission. Optics Express, 29(10), Article 14694. https://doi.org/10.1364/oe.422984 bibtex: '@article{Leuteritz_Farheen_Qiao_Spreyer_Schlickriede_Zentgraf_Myroshnychenko_Förstner_Linden_2021, title={Dielectric travelling wave antennas for directional light emission}, volume={29}, DOI={10.1364/oe.422984}, number={1014694}, journal={Optics Express}, author={Leuteritz, T. and Farheen, Henna and Qiao, S. and Spreyer, F. and Schlickriede, Christian and Zentgraf, Thomas and Myroshnychenko, Viktor and Förstner, Jens and Linden, S.}, year={2021} }' chicago: Leuteritz, T., Henna Farheen, S. Qiao, F. Spreyer, Christian Schlickriede, Thomas Zentgraf, Viktor Myroshnychenko, Jens Förstner, and S. Linden. “Dielectric Travelling Wave Antennas for Directional Light Emission.” Optics Express 29, no. 10 (2021). https://doi.org/10.1364/oe.422984. ieee: 'T. Leuteritz et al., “Dielectric travelling wave antennas for directional light emission,” Optics Express, vol. 29, no. 10, Art. no. 14694, 2021, doi: 10.1364/oe.422984.' mla: Leuteritz, T., et al. “Dielectric Travelling Wave Antennas for Directional Light Emission.” Optics Express, vol. 29, no. 10, 14694, 2021, doi:10.1364/oe.422984. short: T. Leuteritz, H. Farheen, S. Qiao, F. Spreyer, C. Schlickriede, T. Zentgraf, V. Myroshnychenko, J. Förstner, S. Linden, Optics Express 29 (2021). date_created: 2021-04-29T06:56:40Z date_updated: 2024-07-22T07:45:22Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' - _id: '15' - _id: '289' doi: 10.1364/oe.422984 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2021-04-29T06:59:39Z date_updated: 2021-04-29T06:59:39Z file_id: '21822' file_name: 2021-04 Leuteritz - Optics Express - Dielectric travelling wave antennas.pdf file_size: 7464073 relation: main_file success: 1 file_date_updated: 2021-04-29T06:59:39Z has_accepted_license: '1' intvolume: ' 29' issue: '10' keyword: - tet_topic_opticalantenna language: - iso: eng project: - _id: '53' grant_number: '231447078' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' grant_number: '231447078' name: TRR 142 - Subproject C5 publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published status: public title: Dielectric travelling wave antennas for directional light emission type: journal_article user_id: '158' volume: 29 year: '2021' ... --- _id: '27099' abstract: - lang: eng text: In our work, we have engineered low capacitance single quantum dot photodiodes as sensor devices for the optoelectronic sampling of ultrafast electric signals. By the Stark effect, a time-dependent electric signal is converted into a time-dependent shift of the transition energy. This shift is measured accurately by resonant ps laser spectroscopy with photocurrent detection. In our experiments, we sample the laser synchronous output pulse of an ultrafast CMOS circuit with high resolution. With our quantum dot sensor device, we were able to sample transients below 20 ps with a voltage resolution in the mV-range. author: - first_name: Alex full_name: Widhalm, Alex last_name: Widhalm - first_name: Sebastian full_name: Krehs, Sebastian last_name: Krehs - first_name: Dustin full_name: Siebert, Dustin last_name: Siebert - first_name: Nand Lal full_name: Sharma, Nand Lal last_name: Sharma - first_name: Timo full_name: Langer, Timo last_name: Langer - first_name: Björn full_name: Jonas, Björn last_name: Jonas - first_name: Dirk full_name: Reuter, Dirk id: '37763' last_name: Reuter - first_name: Andreas full_name: Thiede, Andreas id: '538' last_name: Thiede - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Widhalm A, Krehs S, Siebert D, et al. Optoelectronic sampling of ultrafast electric transients with single quantum dots. Applied Physics Letters. 2021;119:181109. doi:10.1063/5.0061358 apa: Widhalm, A., Krehs, S., Siebert, D., Sharma, N. L., Langer, T., Jonas, B., Reuter, D., Thiede, A., Förstner, J., & Zrenner, A. (2021). Optoelectronic sampling of ultrafast electric transients with single quantum dots. Applied Physics Letters, 119, 181109. https://doi.org/10.1063/5.0061358 bibtex: '@article{Widhalm_Krehs_Siebert_Sharma_Langer_Jonas_Reuter_Thiede_Förstner_Zrenner_2021, title={Optoelectronic sampling of ultrafast electric transients with single quantum dots}, volume={119}, DOI={10.1063/5.0061358}, journal={Applied Physics Letters}, author={Widhalm, Alex and Krehs, Sebastian and Siebert, Dustin and Sharma, Nand Lal and Langer, Timo and Jonas, Björn and Reuter, Dirk and Thiede, Andreas and Förstner, Jens and Zrenner, Artur}, year={2021}, pages={181109} }' chicago: 'Widhalm, Alex, Sebastian Krehs, Dustin Siebert, Nand Lal Sharma, Timo Langer, Björn Jonas, Dirk Reuter, Andreas Thiede, Jens Förstner, and Artur Zrenner. “Optoelectronic Sampling of Ultrafast Electric Transients with Single Quantum Dots.” Applied Physics Letters 119 (2021): 181109. https://doi.org/10.1063/5.0061358.' ieee: 'A. Widhalm et al., “Optoelectronic sampling of ultrafast electric transients with single quantum dots,” Applied Physics Letters, vol. 119, p. 181109, 2021, doi: 10.1063/5.0061358.' mla: Widhalm, Alex, et al. “Optoelectronic Sampling of Ultrafast Electric Transients with Single Quantum Dots.” Applied Physics Letters, vol. 119, 2021, p. 181109, doi:10.1063/5.0061358. short: A. Widhalm, S. Krehs, D. Siebert, N.L. Sharma, T. Langer, B. Jonas, D. Reuter, A. Thiede, J. Förstner, A. Zrenner, Applied Physics Letters 119 (2021) 181109. date_created: 2021-11-03T10:32:03Z date_updated: 2023-01-24T11:11:54Z ddc: - '530' department: - _id: '15' - _id: '230' - _id: '61' - _id: '51' doi: 10.1063/5.0061358 file: - access_level: local content_type: application/pdf creator: fossie date_created: 2021-11-04T13:46:27Z date_updated: 2021-11-04T13:46:27Z embargo: 2022-11-04 embargo_to: open_access file_id: '27157' file_name: 2021-11 Widhalm - APL - Optoelectronic sampling of ultrafast electric transients with single quantum dots (published version).pdf file_size: 1999652 relation: main_file file_date_updated: 2021-11-04T13:46:27Z has_accepted_license: '1' intvolume: ' 119' keyword: - tet_topic_qd language: - iso: eng page: '181109' project: - _id: '74' name: TRR 142 - Subproject C4 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '60' name: TRR 142 - Subproject A3 publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 - 1077-3118 publication_status: published status: public title: Optoelectronic sampling of ultrafast electric transients with single quantum dots type: journal_article user_id: '158' volume: 119 year: '2021' ... --- _id: '23816' abstract: - lang: eng text: Employing the ultrafast control of electronic states of a semiconductor quantum dot in a cavity, we introduce an approach to achieve on-demand emission of single photons with almost perfect indistinguishability and photon pairs with near ideal entanglement. Our scheme is based on optical excitation off resonant to a cavity mode followed by ultrafast control of the electronic states using the time-dependent quantum-confined Stark effect, which then allows for cavity-resonant emission. Our theoretical analysis considers cavity-loss mechanisms, the Stark effect, and phonon-induced dephasing, allowing realistic predictions for finite temperatures. author: - first_name: David full_name: Bauch, David last_name: Bauch - first_name: Dirk Florian full_name: Heinze, Dirk Florian id: '10904' last_name: Heinze - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Klaus full_name: Jöns, Klaus id: '85353' last_name: Jöns - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 citation: ama: Bauch D, Heinze DF, Förstner J, Jöns K, Schumacher S. Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots. Physical Review B. 2021;104:085308. doi:10.1103/physrevb.104.085308 apa: Bauch, D., Heinze, D. F., Förstner, J., Jöns, K., & Schumacher, S. (2021). Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots. Physical Review B, 104, 085308. https://doi.org/10.1103/physrevb.104.085308 bibtex: '@article{Bauch_Heinze_Förstner_Jöns_Schumacher_2021, title={Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots}, volume={104}, DOI={10.1103/physrevb.104.085308}, journal={Physical Review B}, author={Bauch, David and Heinze, Dirk Florian and Förstner, Jens and Jöns, Klaus and Schumacher, Stefan}, year={2021}, pages={085308} }' chicago: 'Bauch, David, Dirk Florian Heinze, Jens Förstner, Klaus Jöns, and Stefan Schumacher. “Ultrafast Electric Control of Cavity Mediated Single-Photon and Photon-Pair Generation with Semiconductor Quantum Dots.” Physical Review B 104 (2021): 085308. https://doi.org/10.1103/physrevb.104.085308.' ieee: 'D. Bauch, D. F. Heinze, J. Förstner, K. Jöns, and S. Schumacher, “Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots,” Physical Review B, vol. 104, p. 085308, 2021, doi: 10.1103/physrevb.104.085308.' mla: Bauch, David, et al. “Ultrafast Electric Control of Cavity Mediated Single-Photon and Photon-Pair Generation with Semiconductor Quantum Dots.” Physical Review B, vol. 104, 2021, p. 085308, doi:10.1103/physrevb.104.085308. short: D. Bauch, D.F. Heinze, J. Förstner, K. Jöns, S. Schumacher, Physical Review B 104 (2021) 085308. date_created: 2021-09-06T18:02:44Z date_updated: 2023-04-20T15:33:52Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '15' - _id: '170' - _id: '297' - _id: '429' - _id: '623' - _id: '35' doi: 10.1103/physrevb.104.085308 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2021-09-07T06:32:25Z date_updated: 2021-09-07T07:43:47Z file_id: '23818' file_name: 2021-08 Bauch PhysRevB.104.085308.pdf file_size: 887439 relation: main_file file_date_updated: 2021-09-07T07:43:47Z has_accepted_license: '1' intvolume: ' 104' keyword: - tet_topic_qd language: - iso: eng oa: '1' page: '085308' project: - _id: '53' name: TRR 142 - _id: '54' name: TRR 142 - Project Area A - _id: '60' name: TRR 142 - Subproject A3 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published status: public title: Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots type: journal_article user_id: '16199' volume: 104 year: '2021' ... --- _id: '21587' abstract: - lang: eng text: Solving partial differential equations on unstructured grids is a cornerstone of engineering and scientific computing. Nowadays, heterogeneous parallel platforms with CPUs, GPUs, and FPGAs enable energy-efficient and computationally demanding simulations. We developed the HighPerMeshes C++-embedded Domain-Specific Language (DSL) for bridging the abstraction gap between the mathematical and algorithmic formulation of mesh-based algorithms for PDE problems on the one hand and an increasing number of heterogeneous platforms with their different parallel programming and runtime models on the other hand. Thus, the HighPerMeshes DSL aims at higher productivity in the code development process for multiple target platforms. We introduce the concepts as well as the basic structure of the HighPerMeshes DSL, and demonstrate its usage with three examples, a Poisson and monodomain problem, respectively, solved by the continuous finite element method, and the discontinuous Galerkin method for Maxwell’s equation. The mapping of the abstract algorithmic description onto parallel hardware, including distributed memory compute clusters, is presented. Finally, the achievable performance and scalability are demonstrated for a typical example problem on a multi-core CPU cluster. author: - first_name: Samer full_name: Alhaddad, Samer id: '42456' last_name: Alhaddad - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Stefan full_name: Groth, Stefan last_name: Groth - first_name: Daniel full_name: Grünewald, Daniel last_name: Grünewald - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Frank full_name: Hannig, Frank last_name: Hannig - first_name: Tobias full_name: Kenter, Tobias id: '3145' last_name: Kenter - first_name: Franz-Josef full_name: Pfreundt, Franz-Josef last_name: Pfreundt - first_name: Christian full_name: Plessl, Christian id: '16153' last_name: Plessl orcid: 0000-0001-5728-9982 - first_name: Merlind full_name: Schotte, Merlind last_name: Schotte - first_name: Thomas full_name: Steinke, Thomas last_name: Steinke - first_name: Jürgen full_name: Teich, Jürgen last_name: Teich - first_name: Martin full_name: Weiser, Martin last_name: Weiser - first_name: Florian full_name: Wende, Florian last_name: Wende citation: ama: 'Alhaddad S, Förstner J, Groth S, et al. HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids. In: Euro-Par 2020: Parallel Processing Workshops. ; 2021. doi:10.1007/978-3-030-71593-9_15' apa: 'Alhaddad, S., Förstner, J., Groth, S., Grünewald, D., Grynko, Y., Hannig, F., Kenter, T., Pfreundt, F.-J., Plessl, C., Schotte, M., Steinke, T., Teich, J., Weiser, M., & Wende, F. (2021). HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids. In Euro-Par 2020: Parallel Processing Workshops. https://doi.org/10.1007/978-3-030-71593-9_15' bibtex: '@inbook{Alhaddad_Förstner_Groth_Grünewald_Grynko_Hannig_Kenter_Pfreundt_Plessl_Schotte_et al._2021, place={Cham}, title={HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids}, DOI={10.1007/978-3-030-71593-9_15}, booktitle={Euro-Par 2020: Parallel Processing Workshops}, author={Alhaddad, Samer and Förstner, Jens and Groth, Stefan and Grünewald, Daniel and Grynko, Yevgen and Hannig, Frank and Kenter, Tobias and Pfreundt, Franz-Josef and Plessl, Christian and Schotte, Merlind and et al.}, year={2021} }' chicago: 'Alhaddad, Samer, Jens Förstner, Stefan Groth, Daniel Grünewald, Yevgen Grynko, Frank Hannig, Tobias Kenter, et al. “HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids.” In Euro-Par 2020: Parallel Processing Workshops. Cham, 2021. https://doi.org/10.1007/978-3-030-71593-9_15.' ieee: 'S. Alhaddad et al., “HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids,” in Euro-Par 2020: Parallel Processing Workshops, Cham, 2021.' mla: 'Alhaddad, Samer, et al. “HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids.” Euro-Par 2020: Parallel Processing Workshops, 2021, doi:10.1007/978-3-030-71593-9_15.' short: 'S. Alhaddad, J. Förstner, S. Groth, D. Grünewald, Y. Grynko, F. Hannig, T. Kenter, F.-J. Pfreundt, C. Plessl, M. Schotte, T. Steinke, J. Teich, M. Weiser, F. Wende, in: Euro-Par 2020: Parallel Processing Workshops, Cham, 2021.' date_created: 2021-03-31T19:39:42Z date_updated: 2023-09-26T11:40:25Z ddc: - '004' department: - _id: '61' - _id: '230' - _id: '429' - _id: '27' - _id: '518' doi: 10.1007/978-3-030-71593-9_15 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2021-03-31T19:42:52Z date_updated: 2021-03-31T19:42:52Z file_id: '21588' file_name: 2021-03 Alhaddad2021_Chapter_HighPerMeshesADomain-SpecificL.pdf file_size: 564398 relation: main_file success: 1 file_date_updated: 2021-03-31T19:42:52Z has_accepted_license: '1' keyword: - tet_topic_hpc language: - iso: eng place: Cham project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: 'Euro-Par 2020: Parallel Processing Workshops' publication_identifier: isbn: - '9783030715922' - '9783030715939' issn: - 0302-9743 - 1611-3349 publication_status: published quality_controlled: '1' status: public title: HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids type: book_chapter user_id: '15278' year: '2021' ... --- _id: '24788' author: - first_name: Samer full_name: Alhaddad, Samer id: '42456' last_name: Alhaddad - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Stefan full_name: Groth, Stefan last_name: Groth - first_name: Daniel full_name: Grünewald, Daniel last_name: Grünewald - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Frank full_name: Hannig, Frank last_name: Hannig - first_name: Tobias full_name: Kenter, Tobias id: '3145' last_name: Kenter - first_name: Franz‐Josef full_name: Pfreundt, Franz‐Josef last_name: Pfreundt - first_name: Christian full_name: Plessl, Christian id: '16153' last_name: Plessl orcid: 0000-0001-5728-9982 - first_name: Merlind full_name: Schotte, Merlind last_name: Schotte - first_name: Thomas full_name: Steinke, Thomas last_name: Steinke - first_name: Jürgen full_name: Teich, Jürgen last_name: Teich - first_name: Martin full_name: Weiser, Martin last_name: Weiser - first_name: Florian full_name: Wende, Florian last_name: Wende citation: ama: 'Alhaddad S, Förstner J, Groth S, et al. The HighPerMeshes framework for numerical algorithms on unstructured grids. Concurrency and Computation: Practice and Experience. Published online 2021:e6616. doi:10.1002/cpe.6616' apa: 'Alhaddad, S., Förstner, J., Groth, S., Grünewald, D., Grynko, Y., Hannig, F., Kenter, T., Pfreundt, F., Plessl, C., Schotte, M., Steinke, T., Teich, J., Weiser, M., & Wende, F. (2021). The HighPerMeshes framework for numerical algorithms on unstructured grids. Concurrency and Computation: Practice and Experience, e6616. https://doi.org/10.1002/cpe.6616' bibtex: '@article{Alhaddad_Förstner_Groth_Grünewald_Grynko_Hannig_Kenter_Pfreundt_Plessl_Schotte_et al._2021, title={The HighPerMeshes framework for numerical algorithms on unstructured grids}, DOI={10.1002/cpe.6616}, journal={Concurrency and Computation: Practice and Experience}, author={Alhaddad, Samer and Förstner, Jens and Groth, Stefan and Grünewald, Daniel and Grynko, Yevgen and Hannig, Frank and Kenter, Tobias and Pfreundt, Franz‐Josef and Plessl, Christian and Schotte, Merlind and et al.}, year={2021}, pages={e6616} }' chicago: 'Alhaddad, Samer, Jens Förstner, Stefan Groth, Daniel Grünewald, Yevgen Grynko, Frank Hannig, Tobias Kenter, et al. “The HighPerMeshes Framework for Numerical Algorithms on Unstructured Grids.” Concurrency and Computation: Practice and Experience, 2021, e6616. https://doi.org/10.1002/cpe.6616.' ieee: 'S. Alhaddad et al., “The HighPerMeshes framework for numerical algorithms on unstructured grids,” Concurrency and Computation: Practice and Experience, p. e6616, 2021, doi: 10.1002/cpe.6616.' mla: 'Alhaddad, Samer, et al. “The HighPerMeshes Framework for Numerical Algorithms on Unstructured Grids.” Concurrency and Computation: Practice and Experience, 2021, p. e6616, doi:10.1002/cpe.6616.' short: 'S. Alhaddad, J. Förstner, S. Groth, D. Grünewald, Y. Grynko, F. Hannig, T. Kenter, F. Pfreundt, C. Plessl, M. Schotte, T. Steinke, J. Teich, M. Weiser, F. Wende, Concurrency and Computation: Practice and Experience (2021) e6616.' date_created: 2021-09-22T06:15:50Z date_updated: 2023-09-26T11:42:19Z ddc: - '004' department: - _id: '61' - _id: '230' - _id: '27' - _id: '518' doi: 10.1002/cpe.6616 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2021-09-22T06:19:29Z date_updated: 2021-09-22T06:19:29Z file_id: '24789' file_name: 2021-09 Alhaddad - Concurrency... - The HighPerMeshes framework for numerical algorithms on unstructured grids.pdf file_size: 2300152 relation: main_file file_date_updated: 2021-09-22T06:19:29Z has_accepted_license: '1' keyword: - tet_topic_hpc language: - iso: eng oa: '1' page: e6616 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '33' grant_number: 01|H16005A name: HighPerMeshes publication: 'Concurrency and Computation: Practice and Experience' publication_identifier: issn: - 1532-0626 - 1532-0634 publication_status: published quality_controlled: '1' status: public title: The HighPerMeshes framework for numerical algorithms on unstructured grids type: journal_article user_id: '15278' year: '2021' ... --- _id: '20189' abstract: - lang: eng text: A dielectric step-index optical fiber with tube-like profile is considered, being positioned with a small gap on top of a dielectric slab waveguide. We propose a 2.5-D hybrid analytical/numerical coupled mode model for the evanescent excitation of the tube through semi-guided waves propagating in the slab at oblique angles. The model combines the directional polarized modes supported by the slab with analytic solutions for the TE-, TM-, and orbital-angular-momentum (OAM) modes of the tube-shaped fiber. Implementational details of the scheme are discussed, complemented by finite-element simulations for verification purposes. Our results include configurations with resonant in-fiber excitation of OAM modes with large orbital angular momentum and strong field enhancement. article_number: '472' author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Hammer M, Ebers L, Förstner J. Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles. Optical and Quantum Electronics. 2020;52. doi:10.1007/s11082-020-02595-z apa: Hammer, M., Ebers, L., & Förstner, J. (2020). Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles. Optical and Quantum Electronics, 52. https://doi.org/10.1007/s11082-020-02595-z bibtex: '@article{Hammer_Ebers_Förstner_2020, title={Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles}, volume={52}, DOI={10.1007/s11082-020-02595-z}, number={472}, journal={Optical and Quantum Electronics}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2020} }' chicago: Hammer, Manfred, Lena Ebers, and Jens Förstner. “Hybrid Coupled Mode Modelling of the Evanescent Excitation of a Dielectric Tube by Semi-Guided Waves at Oblique Angles.” Optical and Quantum Electronics 52 (2020). https://doi.org/10.1007/s11082-020-02595-z. ieee: M. Hammer, L. Ebers, and J. Förstner, “Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles,” Optical and Quantum Electronics, vol. 52, 2020. mla: Hammer, Manfred, et al. “Hybrid Coupled Mode Modelling of the Evanescent Excitation of a Dielectric Tube by Semi-Guided Waves at Oblique Angles.” Optical and Quantum Electronics, vol. 52, 472, 2020, doi:10.1007/s11082-020-02595-z. short: M. Hammer, L. Ebers, J. Förstner, Optical and Quantum Electronics 52 (2020). date_created: 2020-10-24T08:03:58Z date_updated: 2022-01-06T06:54:22Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1007/s11082-020-02595-z file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2020-10-24T08:11:40Z date_updated: 2020-10-24T08:11:40Z file_id: '20190' file_name: 2020-10 Hammer - OQE - Hybrid Coupled Mode Modelling Dielectric Tube.pdf file_size: 2212769 relation: main_file success: 1 file_date_updated: 2020-10-24T08:11:40Z has_accepted_license: '1' intvolume: ' 52' keyword: - tet_topic_waveguides language: - iso: eng project: - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 - _id: '53' name: TRR 142 publication: Optical and Quantum Electronics publication_identifier: issn: - 0306-8919 - 1572-817X publication_status: published status: public title: Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles type: journal_article user_id: '158' volume: 52 year: '2020' ... --- _id: '20233' abstract: - lang: eng text: The challenge of designing new tunable nonlinear dielectric materials with tailored properties has attracted an increasing amount of interest recently. Herein, we study the effective nonlinear dielectric response of a stochastic paraelectric-dielectric composite consisting of equilibrium distributions of circular and partially penetrable disks (or parallel, infinitely long, identical, partially penetrable, circular cylinders) of a dielectric phase randomly dispersed in a continuous matrix of a paraelectric phase. The random microstructures were generated using the Metropolis Monte Carlo algorithm. The evaluation of the effective permittivity and tunability were carried out by employing either a Landau thermodynamic model or its Johnson’s approximation to describe the field-dependent permittivity of the paraelectric phase and solving continuum-electrostatics equations using finite element calculations. We reveal that the percolation threshold in this composite governs the critical behavior of the effective permittivity and tunability. For microstructures below the percolation threshold, our simulations demonstrate a strong nonlinear behaviour of the field-dependent effective permittivity and very high tunability that increases as a function of dielectric phase concentration. Above the percolation threshold, the effective permittivity shows the tendency to linearization and the tunability dramatically drops down. The highly reduced permittivity and extraordinarily high tunability are obtained for the composites with dielectric impenetrable disks at high concentrations, in which the triggering of the percolation transition is avoided. The reported results cast light on distinct nonlinear behaviour of 2D and 3D stochastic composites and can guide the design of novel composites with the controlled morphology and tailored permittivity and tunability. author: - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Stanislav full_name: Smirnov, Stanislav last_name: Smirnov - first_name: Pious Mathews Mulavarickal full_name: Jose, Pious Mathews Mulavarickal last_name: Jose - first_name: Christian full_name: Brosseau, Christian last_name: Brosseau - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Myroshnychenko V, Smirnov S, Jose PMM, Brosseau C, Förstner J. Nonlinear dielectric properties of random paraelectric-dielectric composites. Acta Materialia. 2020;203:116432. doi:10.1016/j.actamat.2020.10.051 apa: Myroshnychenko, V., Smirnov, S., Jose, P. M. M., Brosseau, C., & Förstner, J. (2020). Nonlinear dielectric properties of random paraelectric-dielectric composites. Acta Materialia, 203, 116432. https://doi.org/10.1016/j.actamat.2020.10.051 bibtex: '@article{Myroshnychenko_Smirnov_Jose_Brosseau_Förstner_2020, title={Nonlinear dielectric properties of random paraelectric-dielectric composites}, volume={203}, DOI={10.1016/j.actamat.2020.10.051}, journal={Acta Materialia}, author={Myroshnychenko, Viktor and Smirnov, Stanislav and Jose, Pious Mathews Mulavarickal and Brosseau, Christian and Förstner, Jens}, year={2020}, pages={116432} }' chicago: 'Myroshnychenko, Viktor, Stanislav Smirnov, Pious Mathews Mulavarickal Jose, Christian Brosseau, and Jens Förstner. “Nonlinear Dielectric Properties of Random Paraelectric-Dielectric Composites.” Acta Materialia 203 (2020): 116432. https://doi.org/10.1016/j.actamat.2020.10.051.' ieee: V. Myroshnychenko, S. Smirnov, P. M. M. Jose, C. Brosseau, and J. Förstner, “Nonlinear dielectric properties of random paraelectric-dielectric composites,” Acta Materialia, vol. 203, p. 116432, 2020. mla: Myroshnychenko, Viktor, et al. “Nonlinear Dielectric Properties of Random Paraelectric-Dielectric Composites.” Acta Materialia, vol. 203, 2020, p. 116432, doi:10.1016/j.actamat.2020.10.051. short: V. Myroshnychenko, S. Smirnov, P.M.M. Jose, C. Brosseau, J. Förstner, Acta Materialia 203 (2020) 116432. date_created: 2020-10-30T13:51:42Z date_updated: 2022-01-06T06:54:24Z ddc: - '530' department: - _id: '61' - _id: '230' doi: 10.1016/j.actamat.2020.10.051 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2020-10-30T13:52:58Z date_updated: 2020-10-30T13:52:58Z file_id: '20234' file_name: 2020-10 Myroshnychenko - Acta Material (accepted preprint)_compressed.pdf file_size: 3934721 relation: main_file title: (Accepted Preprint) file_date_updated: 2020-10-30T13:52:58Z has_accepted_license: '1' intvolume: ' 203' language: - iso: eng oa: '1' page: '116432' project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Acta Materialia publication_identifier: issn: - 1359-6454 publication_status: published status: public title: Nonlinear dielectric properties of random paraelectric-dielectric composites type: journal_article user_id: '158' volume: 203 year: '2020' ... --- _id: '17803' abstract: - lang: eng text: We numerically simulate multiple light scattering in discrete disordered media represented by large clusters of irregular non-absorbing particles. The packing density of clusters is 0.5. With such conditions diffuse scattering is significantly reduced and light transport follows propagation channels that are determined by the particle size and topology of the medium. This kind of localization produces coherent backscattering intensity surge and enhanced negative polarization branch if compared to lower density samples. author: - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Yuriy full_name: Shkuratov, Yuriy last_name: Shkuratov - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Grynko Y, Shkuratov Y, Förstner J. Light backscattering from large clusters of densely packed irregular particles. Journal of Quantitative Spectroscopy and Radiative Transfer. 2020;255:107234. doi:10.1016/j.jqsrt.2020.107234 apa: Grynko, Y., Shkuratov, Y., & Förstner, J. (2020). Light backscattering from large clusters of densely packed irregular particles. Journal of Quantitative Spectroscopy and Radiative Transfer, 255, 107234. https://doi.org/10.1016/j.jqsrt.2020.107234 bibtex: '@article{Grynko_Shkuratov_Förstner_2020, title={Light backscattering from large clusters of densely packed irregular particles}, volume={255}, DOI={10.1016/j.jqsrt.2020.107234}, journal={Journal of Quantitative Spectroscopy and Radiative Transfer}, author={Grynko, Yevgen and Shkuratov, Yuriy and Förstner, Jens}, year={2020}, pages={107234} }' chicago: 'Grynko, Yevgen, Yuriy Shkuratov, and Jens Förstner. “Light Backscattering from Large Clusters of Densely Packed Irregular Particles.” Journal of Quantitative Spectroscopy and Radiative Transfer 255 (2020): 107234. https://doi.org/10.1016/j.jqsrt.2020.107234.' ieee: Y. Grynko, Y. Shkuratov, and J. Förstner, “Light backscattering from large clusters of densely packed irregular particles,” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 255, p. 107234, 2020. mla: Grynko, Yevgen, et al. “Light Backscattering from Large Clusters of Densely Packed Irregular Particles.” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 255, 2020, p. 107234, doi:10.1016/j.jqsrt.2020.107234. short: Y. Grynko, Y. Shkuratov, J. Förstner, Journal of Quantitative Spectroscopy and Radiative Transfer 255 (2020) 107234. date_created: 2020-08-11T09:07:04Z date_updated: 2022-01-06T06:53:20Z ddc: - '530' department: - _id: '61' - _id: '230' doi: 10.1016/j.jqsrt.2020.107234 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2020-08-11T15:24:31Z date_updated: 2020-08-11T15:24:31Z file_id: '17814' file_name: 2020-08 Grynko - JQSRT PREPRINT - Large Cluster.pdf file_size: 1567605 relation: main_file title: Preprint file_date_updated: 2020-08-11T15:24:31Z has_accepted_license: '1' intvolume: ' 255' keyword: - tet_topic_scattering language: - iso: eng oa: '1' page: '107234' project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Journal of Quantitative Spectroscopy and Radiative Transfer publication_identifier: issn: - 0022-4073 publication_status: published status: public title: Light backscattering from large clusters of densely packed irregular particles type: journal_article user_id: '158' volume: 255 year: '2020' ... --- _id: '20372' abstract: - lang: eng text: A stepwise angular spectrum method (SASM) for curved interfaces is presented to calculate the wave propagation in planar lens-like integrated optical structures based on photonic slab waveguides. The method is derived and illustrated for an effective 2D setup first and then for 3D slab waveguide lenses. We employ slab waveguides of different thicknesses connected by curved surfaces to realize a lens-like structure. To simulate the wave propagation in 3D including reflection and scattering losses, the stepwise angular spectrum method is combined with full vectorial finite element computations for subproblems with lower complexity. Our SASM results show excellent agreement with rigorous numerical simulations of the full structures with a substantially lower computational effort and can be utilized for the simulation-based design and optimization of complex and large scale setups. author: - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Ebers L, Hammer M, Förstner J. Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method. Optics Express. 2020;28(24):36361. doi:10.1364/oe.409612 apa: Ebers, L., Hammer, M., & Förstner, J. (2020). Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method. Optics Express, 28(24), 36361. https://doi.org/10.1364/oe.409612 bibtex: '@article{Ebers_Hammer_Förstner_2020, title={Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method}, volume={28}, DOI={10.1364/oe.409612}, number={24}, journal={Optics Express}, author={Ebers, Lena and Hammer, Manfred and Förstner, Jens}, year={2020}, pages={36361} }' chicago: 'Ebers, Lena, Manfred Hammer, and Jens Förstner. “Light Diffraction in Slab Waveguide Lenses Simulated with the Stepwise Angular Spectrum Method.” Optics Express 28, no. 24 (2020): 36361. https://doi.org/10.1364/oe.409612.' ieee: L. Ebers, M. Hammer, and J. Förstner, “Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method,” Optics Express, vol. 28, no. 24, p. 36361, 2020. mla: Ebers, Lena, et al. “Light Diffraction in Slab Waveguide Lenses Simulated with the Stepwise Angular Spectrum Method.” Optics Express, vol. 28, no. 24, 2020, p. 36361, doi:10.1364/oe.409612. short: L. Ebers, M. Hammer, J. Förstner, Optics Express 28 (2020) 36361. date_created: 2020-11-17T09:52:47Z date_updated: 2022-01-06T06:54:26Z department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1364/oe.409612 intvolume: ' 28' issue: '24' keyword: - tet_topic_waveguides language: - iso: eng page: '36361' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '74' name: TRR 142 - Subproject C4 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published status: public title: Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method type: journal_article user_id: '158' volume: 28 year: '2020' ... --- _id: '21719' abstract: - lang: eng text: We fabricate silicon tapers to increase the mode overlap of superconducting detectors on Ti:LiNbO3 waveguides. Mode images show a reduction in mode size from 6 µm to 2 µm FWHM, agreeing with beam propagation simulations. article_number: QTh7A.8 author: - first_name: Maximilian full_name: Protte, Maximilian id: '46170' last_name: Protte - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Jan Philipp full_name: Höpker, Jan Philipp id: '33913' last_name: Höpker - first_name: Maximilian full_name: Albert, Maximilian last_name: Albert - first_name: Viktor full_name: Quiring, Viktor last_name: Quiring - first_name: Cedrik full_name: Meier, Cedrik id: '20798' last_name: Meier orcid: https://orcid.org/0000-0002-3787-3572 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Christine full_name: Silberhorn, Christine id: '26263' last_name: Silberhorn - first_name: Tim full_name: Bartley, Tim id: '49683' last_name: Bartley citation: ama: 'Protte M, Ebers L, Hammer M, et al. Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics. In: OSA Quantum 2.0 Conference. ; 2020. doi:10.1364/quantum.2020.qth7a.8' apa: Protte, M., Ebers, L., Hammer, M., Höpker, J. P., Albert, M., Quiring, V., Meier, C., Förstner, J., Silberhorn, C., & Bartley, T. (2020). Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics. OSA Quantum 2.0 Conference, Article QTh7A.8. https://doi.org/10.1364/quantum.2020.qth7a.8 bibtex: '@inproceedings{Protte_Ebers_Hammer_Höpker_Albert_Quiring_Meier_Förstner_Silberhorn_Bartley_2020, title={Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics}, DOI={10.1364/quantum.2020.qth7a.8}, number={QTh7A.8}, booktitle={OSA Quantum 2.0 Conference}, author={Protte, Maximilian and Ebers, Lena and Hammer, Manfred and Höpker, Jan Philipp and Albert, Maximilian and Quiring, Viktor and Meier, Cedrik and Förstner, Jens and Silberhorn, Christine and Bartley, Tim}, year={2020} }' chicago: Protte, Maximilian, Lena Ebers, Manfred Hammer, Jan Philipp Höpker, Maximilian Albert, Viktor Quiring, Cedrik Meier, Jens Förstner, Christine Silberhorn, and Tim Bartley. “Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics.” In OSA Quantum 2.0 Conference, 2020. https://doi.org/10.1364/quantum.2020.qth7a.8. ieee: 'M. Protte et al., “Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics,” 2020, doi: 10.1364/quantum.2020.qth7a.8.' mla: Protte, Maximilian, et al. “Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics.” OSA Quantum 2.0 Conference, QTh7A.8, 2020, doi:10.1364/quantum.2020.qth7a.8. short: 'M. Protte, L. Ebers, M. Hammer, J.P. Höpker, M. Albert, V. Quiring, C. Meier, J. Förstner, C. Silberhorn, T. Bartley, in: OSA Quantum 2.0 Conference, 2020.' date_created: 2021-04-22T15:56:45Z date_updated: 2022-10-25T07:41:15Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' - _id: '15' doi: 10.1364/quantum.2020.qth7a.8 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2021-04-22T15:58:52Z date_updated: 2021-04-22T15:58:52Z file_id: '21720' file_name: Quantum2.0-Towards SSC hybrid integration for quantum photonics[4936].pdf file_size: 1704199 relation: main_file success: 1 file_date_updated: 2021-04-22T15:58:52Z has_accepted_license: '1' keyword: - tet_topic_waveguide language: - iso: eng publication: OSA Quantum 2.0 Conference publication_identifier: isbn: - '9781943580811' publication_status: published status: public title: Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics type: conference user_id: '49683' year: '2020' ... --- _id: '17322' author: - first_name: Amlan full_name: Mukherjee, Amlan last_name: Mukherjee - first_name: Alex full_name: Widhalm, Alex last_name: Widhalm - first_name: Dustin full_name: Siebert, Dustin last_name: Siebert - first_name: Sebastian full_name: Krehs, Sebastian last_name: Krehs - first_name: Nandlal full_name: Sharma, Nandlal last_name: Sharma - first_name: Andreas full_name: Thiede, Andreas id: '538' last_name: Thiede - first_name: Dirk full_name: Reuter, Dirk id: '37763' last_name: Reuter - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Mukherjee A, Widhalm A, Siebert D, et al. Electrically controlled rapid adiabatic passage in a single quantum dot. Applied Physics Letters. 2020;116:251103. doi:10.1063/5.0012257 apa: Mukherjee, A., Widhalm, A., Siebert, D., Krehs, S., Sharma, N., Thiede, A., Reuter, D., Förstner, J., & Zrenner, A. (2020). Electrically controlled rapid adiabatic passage in a single quantum dot. Applied Physics Letters, 116, 251103. https://doi.org/10.1063/5.0012257 bibtex: '@article{Mukherjee_Widhalm_Siebert_Krehs_Sharma_Thiede_Reuter_Förstner_Zrenner_2020, title={Electrically controlled rapid adiabatic passage in a single quantum dot}, volume={116}, DOI={10.1063/5.0012257}, journal={Applied Physics Letters}, author={Mukherjee, Amlan and Widhalm, Alex and Siebert, Dustin and Krehs, Sebastian and Sharma, Nandlal and Thiede, Andreas and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}, year={2020}, pages={251103} }' chicago: 'Mukherjee, Amlan, Alex Widhalm, Dustin Siebert, Sebastian Krehs, Nandlal Sharma, Andreas Thiede, Dirk Reuter, Jens Förstner, and Artur Zrenner. “Electrically Controlled Rapid Adiabatic Passage in a Single Quantum Dot.” Applied Physics Letters 116 (2020): 251103. https://doi.org/10.1063/5.0012257.' ieee: 'A. Mukherjee et al., “Electrically controlled rapid adiabatic passage in a single quantum dot,” Applied Physics Letters, vol. 116, p. 251103, 2020, doi: 10.1063/5.0012257.' mla: Mukherjee, Amlan, et al. “Electrically Controlled Rapid Adiabatic Passage in a Single Quantum Dot.” Applied Physics Letters, vol. 116, 2020, p. 251103, doi:10.1063/5.0012257. short: A. Mukherjee, A. Widhalm, D. Siebert, S. Krehs, N. Sharma, A. Thiede, D. Reuter, J. Förstner, A. Zrenner, Applied Physics Letters 116 (2020) 251103. date_created: 2020-06-25T12:31:42Z date_updated: 2023-01-24T11:12:09Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' - _id: '51' doi: 10.1063/5.0012257 file: - access_level: request content_type: application/pdf creator: fossie date_created: 2020-06-25T12:45:04Z date_updated: 2022-01-06T06:53:07Z embargo: 2021-06-25 embargo_to: open_access file_id: '17325' file_name: 2020-06 Widhalm - APL - Electrically controlled RAP in single QD (official).pdf file_size: 1359326 relation: main_file file_date_updated: 2022-01-06T06:53:07Z has_accepted_license: '1' intvolume: ' 116' keyword: - tet_topic_qd language: - iso: eng page: '251103' project: - _id: '56' name: TRR 142 - Project Area C - _id: '74' name: TRR 142 - Subproject C4 - _id: '53' name: TRR 142 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 - 1077-3118 publication_status: published status: public title: Electrically controlled rapid adiabatic passage in a single quantum dot type: journal_article user_id: '158' volume: 116 year: '2020' ... --- _id: '39966' author: - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: A. full_name: Widhalm, A. last_name: Widhalm - first_name: A. full_name: Mukherjee, A. last_name: Mukherjee - first_name: S. full_name: Krehs, S. last_name: Krehs - first_name: B. full_name: Jonas, B. last_name: Jonas - first_name: K. full_name: Spychala, K. last_name: Spychala - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Andreas full_name: Thiede, Andreas id: '538' last_name: Thiede - first_name: Dirk full_name: Reuter, Dirk id: '37763' last_name: Reuter - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: 'Förstner J, Widhalm A, Mukherjee A, et al. Ultrafast electric control of a single QD exciton. In: 11th International Conference on Quantum Dots. ; 2020.' apa: Förstner, J., Widhalm, A., Mukherjee, A., Krehs, S., Jonas, B., Spychala, K., Förstner, J., Thiede, A., Reuter, D., & Zrenner, A. (2020). Ultrafast electric control of a single QD exciton. 11th International Conference on Quantum Dots. bibtex: '@inproceedings{Förstner_Widhalm_Mukherjee_Krehs_Jonas_Spychala_Förstner_Thiede_Reuter_Zrenner_2020, place={Munich/Germany}, title={Ultrafast electric control of a single QD exciton}, booktitle={11th International Conference on Quantum Dots}, author={Förstner, Jens and Widhalm, A. and Mukherjee, A. and Krehs, S. and Jonas, B. and Spychala, K. and Förstner, Jens and Thiede, Andreas and Reuter, Dirk and Zrenner, Artur}, year={2020} }' chicago: Förstner, Jens, A. Widhalm, A. Mukherjee, S. Krehs, B. Jonas, K. Spychala, Jens Förstner, Andreas Thiede, Dirk Reuter, and Artur Zrenner. “Ultrafast Electric Control of a Single QD Exciton.” In 11th International Conference on Quantum Dots. Munich/Germany, 2020. ieee: J. Förstner et al., “Ultrafast electric control of a single QD exciton,” 2020. mla: Förstner, Jens, et al. “Ultrafast Electric Control of a Single QD Exciton.” 11th International Conference on Quantum Dots, 2020. short: 'J. Förstner, A. Widhalm, A. Mukherjee, S. Krehs, B. Jonas, K. Spychala, J. Förstner, A. Thiede, D. Reuter, A. Zrenner, in: 11th International Conference on Quantum Dots, Munich/Germany, 2020.' date_created: 2023-01-25T11:11:42Z date_updated: 2025-02-12T07:53:06Z department: - _id: '61' - _id: '230' - _id: '429' - _id: '51' language: - iso: eng place: Munich/Germany publication: 11th International Conference on Quantum Dots status: public title: Ultrafast electric control of a single QD exciton type: conference_abstract user_id: '42514' year: '2020' ... --- _id: '8872' abstract: - lang: eng text: We consider light scattering from a new type of model particle whose shape is represented in the form of a generalized ellipsoid having N foci, where N is greater than two. Such particles can be convex as well as concave. We use the geometrical optics approximation to study the light scattering from 3-foci particles. Non-zero elements of the scattering matrix are calculated for ensembles of randomly oriented independent transparent particles, m = n + i0. Several internal reflection orders are considered separately. It was found that the transmission-transmission (TT) and transmission-reflectance-transmission (TRT) components dominate in the formation of intensity of scattered light at large and small phase angles, respectively. We found a significant role of the total internal reflections of the TRT in the middle portion of the phase angle range. The main factors in the formation of positive linear polarization are the R and TRT component. The TT component is responsible for the formation of negative polarization branch at large phase angles. author: - first_name: Dmitriy full_name: Stankevich, Dmitriy last_name: Stankevich - first_name: Larissa full_name: Hradyska, Larissa last_name: Hradyska - first_name: Yuriy full_name: Shkuratov, Yuriy last_name: Shkuratov - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Gorden full_name: Videen, Gorden last_name: Videen - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Stankevich D, Hradyska L, Shkuratov Y, Grynko Y, Videen G, Förstner J. Light scattering by 3-Foci convex and concave particles in the geometrical optics approximation. Journal of Quantitative Spectroscopy and Radiative Transfer. 2019;231:49. doi:10.1016/j.jqsrt.2019.04.016 apa: Stankevich, D., Hradyska, L., Shkuratov, Y., Grynko, Y., Videen, G., & Förstner, J. (2019). Light scattering by 3-Foci convex and concave particles in the geometrical optics approximation. Journal of Quantitative Spectroscopy and Radiative Transfer, 231, 49. https://doi.org/10.1016/j.jqsrt.2019.04.016 bibtex: '@article{Stankevich_Hradyska_Shkuratov_Grynko_Videen_Förstner_2019, title={Light scattering by 3-Foci convex and concave particles in the geometrical optics approximation}, volume={231}, DOI={10.1016/j.jqsrt.2019.04.016}, journal={Journal of Quantitative Spectroscopy and Radiative Transfer}, author={Stankevich, Dmitriy and Hradyska, Larissa and Shkuratov, Yuriy and Grynko, Yevgen and Videen, Gorden and Förstner, Jens}, year={2019}, pages={49} }' chicago: 'Stankevich, Dmitriy, Larissa Hradyska, Yuriy Shkuratov, Yevgen Grynko, Gorden Videen, and Jens Förstner. “Light Scattering by 3-Foci Convex and Concave Particles in the Geometrical Optics Approximation.” Journal of Quantitative Spectroscopy and Radiative Transfer 231 (2019): 49. https://doi.org/10.1016/j.jqsrt.2019.04.016.' ieee: D. Stankevich, L. Hradyska, Y. Shkuratov, Y. Grynko, G. Videen, and J. Förstner, “Light scattering by 3-Foci convex and concave particles in the geometrical optics approximation,” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 231, p. 49, 2019. mla: Stankevich, Dmitriy, et al. “Light Scattering by 3-Foci Convex and Concave Particles in the Geometrical Optics Approximation.” Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 231, 2019, p. 49, doi:10.1016/j.jqsrt.2019.04.016. short: D. Stankevich, L. Hradyska, Y. Shkuratov, Y. Grynko, G. Videen, J. Förstner, Journal of Quantitative Spectroscopy and Radiative Transfer 231 (2019) 49. date_created: 2019-04-11T07:38:54Z date_updated: 2022-01-06T07:04:04Z department: - _id: '61' doi: 10.1016/j.jqsrt.2019.04.016 intvolume: ' 231' keyword: - tet_topic_scattering language: - iso: eng page: '49' publication: Journal of Quantitative Spectroscopy and Radiative Transfer publication_identifier: issn: - 0022-4073 publication_status: published status: public title: Light scattering by 3-Foci convex and concave particles in the geometrical optics approximation type: journal_article user_id: '158' volume: 231 year: '2019' ... --- _id: '12908' author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Hammer M, Ebers L, Förstner J. Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection coating. Journal of the Optical Society of America B. 2019;36:2395. doi:10.1364/josab.36.002395' apa: 'Hammer, M., Ebers, L., & Förstner, J. (2019). Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection coating. Journal of the Optical Society of America B, 36, 2395. https://doi.org/10.1364/josab.36.002395' bibtex: '@article{Hammer_Ebers_Förstner_2019, title={Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection coating}, volume={36}, DOI={10.1364/josab.36.002395}, journal={Journal of the Optical Society of America B}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2019}, pages={2395} }' chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Oblique Quasi-Lossless Excitation of a Thin Silicon Slab Waveguide: A Guided-Wave Variant of an Anti-Reflection Coating.” Journal of the Optical Society of America B 36 (2019): 2395. https://doi.org/10.1364/josab.36.002395.' ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection coating,” Journal of the Optical Society of America B, vol. 36, p. 2395, 2019.' mla: 'Hammer, Manfred, et al. “Oblique Quasi-Lossless Excitation of a Thin Silicon Slab Waveguide: A Guided-Wave Variant of an Anti-Reflection Coating.” Journal of the Optical Society of America B, vol. 36, 2019, p. 2395, doi:10.1364/josab.36.002395.' short: M. Hammer, L. Ebers, J. Förstner, Journal of the Optical Society of America B 36 (2019) 2395. date_created: 2019-08-09T07:07:45Z date_updated: 2022-01-06T06:51:24Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1364/josab.36.002395 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2019-08-09T07:09:04Z date_updated: 2019-08-09T07:09:04Z file_id: '12909' file_name: 2019-07 Hammer - JOSA B - Oblique Quasi-Lossless Excitation of a Thin Silicon Slab Waveguide (preprint).pdf file_size: 728533 relation: main_file file_date_updated: 2019-08-09T07:09:04Z has_accepted_license: '1' intvolume: ' 36' keyword: - tet_topic_waveguides language: - iso: eng oa: '1' page: '2395' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 publication: Journal of the Optical Society of America B publication_identifier: issn: - 0740-3224 - 1520-8540 publication_status: published status: public title: 'Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection coating' type: journal_article user_id: '158' volume: 36 year: '2019' ...