Search Results - "Koenig, Jacob"
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Acceleration and deceleration of quantum dynamics based on inter-trajectory travel with fast-forward scaling theory
Published in Scientific reports (24-06-2022)“…Quantum information processing requires fast manipulations of quantum systems in order to overcome dissipative effects. We propose a method to accelerate…”
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Journal Article -
2
Four-Wave Mixing in Landau-Quantized Graphene
Published in Nano letters (12-04-2017)“…For Landau-quantized graphene, featuring an energy spectrum consisting of nonequidistant Landau levels, theory predicts a giant resonantly enhanced optical…”
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3
Weakly-Supervised Surface Crack Segmentation by Generating Pseudo-Labels Using Localization With a Classifier and Thresholding
Published in IEEE transactions on intelligent transportation systems (01-12-2022)“…Surface cracks are a common sight on public infrastructure nowadays. Recent work has been addressing this problem by supporting structural maintenance measures…”
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4
A Convolutional Neural Network for Pavement Surface Crack Segmentation Using Residual Connections and Attention Gating
Published in 2019 IEEE International Conference on Image Processing (ICIP) (01-09-2019)“…Conventional surface crack segmentation requires images manually labelled by a trained expert. It is a challenging task as cracks can vary in orientation and…”
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Conference Proceeding -
5
Acceleration and deceleration of quantum dynamics based on inter-trajectory travel with fast-forward scaling theory
Published 25-09-2021“…Quantum information processing requires fast manipulations of quantum systems in order to overcome dissipative effects. We propose a method to accelerate…”
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Journal Article -
6
Nonlinear Terahertz Absorption of Graphene Plasmons
Published in Nano letters (13-04-2016)“…Subwavelength graphene structures support localized plasmonic resonances in the terahertz and mid-infrared spectral regimes. The strong field confinement at…”
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7
Plasmonic efficiency enhancement at the anode of strip line photoconductive terahertz emitters
Published in Optics express (03-10-2016)“…We investigate strip line photoconductive terahertz (THz) emitters in a regime where both the direct emission of accelerated carriers in the semiconductor and…”
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8
Gouy phase shift of a tightly focused, radially polarized beam
Published in Optica (20-01-2016)Get full text
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9
Symmetry-Breaking Supercollisions in Landau-Quantized Graphene
Published in Physical review letters (11-08-2017)“…Recent pump-probe experiments performed on graphene in a perpendicular magnetic field have revealed carrier relaxation times ranging from picoseconds to…”
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10
Universal ultrafast detector for short optical pulses based on graphene
Published in Optics express (02-11-2015)“…Graphene has unique optical and electronic properties that make it attractive as an active material for broadband ultrafast detection. We present here a…”
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Journal Article -
11
Optical Control of Plasmonic Hot Carriers in Graphene
Published in ACS photonics (20-02-2019)“…Plasmons in subwavelength-structured graphene surfaces exhibit strong light–matter interaction and prominent resonance effects in the terahertz/mid-IR…”
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12
Ultrafast Processes in Graphene: From Fundamental Manybody Interactions to Device Applications
Published in Annalen der Physik (01-11-2017)“…A joint experiment‐theory investigation of the carrier dynamics in graphene, in particular in the energetic vicinity of the Dirac point, is reviewed. Radiation…”
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THz nonlinear response of Landau-quantized graphene
Published in 2017 Conference on Lasers and Electro-Optics (CLEO) (01-05-2017)“…The third-order nonlinear susceptibility of Landau-quantized graphene is studied by degenerate time-integrated four-wave mixing in the THz regime. The revealed…”
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Conference Proceeding -
14
Nonlinear plasmonic THz absorption in graphene ribbons
Published in 2016 Conference on Lasers and Electro-Optics (CLEO) (01-06-2016)“…We investigate the nonlinear plasmonic absorption in graphene ribbons by THz pump-probe spectroscopy. The optical nonlinearity is increased by more than one…”
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Conference Proceeding -
15
Tracing the Gouy phase shift of focused, radially polarized THz pulses
Published in 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) (01-09-2016)“…THz microscopic imaging is used to extract the Gouy phase shift of the transverse and longitudinal field components of a tightly focused, radially polarized…”
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Conference Proceeding