@article{27099,
  abstract     = {{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       = {{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}},
  issn         = {{0003-6951}},
  journal      = {{Applied Physics Letters}},
  keywords     = {{tet_topic_qd}},
  pages        = {{181109}},
  title        = {{{Optoelectronic sampling of ultrafast electric transients with single quantum dots}}},
  doi          = {{10.1063/5.0061358}},
  volume       = {{119}},
  year         = {{2021}},
}

@article{20372,
  abstract     = {{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       = {{Ebers, Lena and Hammer, Manfred and Förstner, Jens}},
  issn         = {{1094-4087}},
  journal      = {{Optics Express}},
  keywords     = {{tet_topic_waveguides}},
  number       = {{24}},
  pages        = {{36361}},
  title        = {{{Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method}}},
  doi          = {{10.1364/oe.409612}},
  volume       = {{28}},
  year         = {{2020}},
}

@article{17322,
  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}},
  issn         = {{0003-6951}},
  journal      = {{Applied Physics Letters}},
  keywords     = {{tet_topic_qd}},
  pages        = {{251103}},
  title        = {{{Electrically controlled rapid adiabatic passage in a single quantum dot}}},
  doi          = {{10.1063/5.0012257}},
  volume       = {{116}},
  year         = {{2020}},
}

@article{4831,
  abstract     = {{Polarization of light is essential for some living organisms and many optical applications. Here, an orientation dependent polarization conversion effect is reported for light reflected from diamond‐structure‐based photonic crystals (D‐structure) inside the scales of a beetle, the weevil Entimus imperialis. When linearly polarized light propagates along its 〈100〉 directions, the D‐structure behaves analogous to a half‐wave plate in reflection but based on a different mechanism. The D‐structure rotates the polarization direction of linearly polarized light, and reflects circularly polarized light of both handednesses without changing it. This polarization effect is different from circular dichroism occurring in chiral biological photonic structures discovered before. The structural origin of this effect is symmetry breaking inside D‐structure's unit cell. This finding demonstrates that natural photonic structures can exploit multiple functionalities inherent to the design principles of their structural organization. Aiming at transferring the inherent polarization effect of the biological D‐structure to technically realizable materials, three simplified biomimetic structural models are derived and it is theoretically demonstrated that they retain the effect. Out of these structures, functioning woodpile structure prototypes are fabricated.}},
  author       = {{Wu, Xia and Rodríguez-Gallegos, Fernando L. and Heep, Marie-Christin and Schwind, Bertram and Li, Guixin and Fabritius, Helge-Otto and von Freymann, Georg and Förstner, Jens}},
  issn         = {{2195-1071}},
  journal      = {{Advanced Optical Materials}},
  keywords     = {{tet_topic_phc, tet_topic_bio}},
  number       = {{24}},
  pages        = {{1800635}},
  publisher    = {{Wiley}},
  title        = {{{Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures}}},
  doi          = {{10.1002/adom.201800635}},
  volume       = {{6}},
  year         = {{2018}},
}

@article{3427,
  abstract     = {{We report on the coherent phase manipulation of quantum dot excitons by electric means. For our
experiments, we use a low capacitance single quantum dot photodiode which is electrically
controlled by a custom designed SiGe:C BiCMOS chip. The phase manipulation is performed and
quantified in a Ramsey experiment, where ultrafast transient detuning of the exciton energy is
performed synchronous to double pulse p/2 ps laser excitation. We are able to demonstrate
electrically controlled phase manipulations with magnitudes up to 3p within 100 ps which is below
the dephasing time of the quantum dot exciton.}},
  author       = {{Widhalm, Alex and Mukherjee, Amlan and Krehs, Sebastian and Sharma, Nandlal and Kölling, Peter and Thiede, Andreas and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}},
  issn         = {{0003-6951}},
  journal      = {{Applied Physics Letters}},
  keywords     = {{tet_topic_qd}},
  number       = {{11}},
  pages        = {{111105}},
  title        = {{{Ultrafast electric phase control of a single exciton qubit}}},
  doi          = {{10.1063/1.5020364}},
  volume       = {{112}},
  year         = {{2018}},
}

@article{680,
  author       = {{Peter, Manuel and Hildebrandt, Andre and Schlickriede, Christian and Gharib, Kimia and Zentgraf, Thomas and Förstner, Jens and Linden, Stefan}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{tet_topic_opticalantenna}},
  number       = {{7}},
  pages        = {{4178--4183}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Directional Emission from Dielectric Leaky-Wave Nanoantennas}}},
  doi          = {{10.1021/acs.nanolett.7b00966}},
  volume       = {{17}},
  year         = {{2017}},
}

@article{4331,
  abstract     = {{We report about the fabrication and analysis of high Q photonic crystal cavities with metallic
Schottky-contacts. The structures are based on GaAs n-i membranes with an InGaAs quantum well
in the i-region and nanostructured low ohmic metal top-gates. They are designed for photocurrent
readout within the cavity and fast electric manipulations. The cavity structures are characterized by
photoluminescence and photocurrent spectroscopy under resonant excitation. We find strong cavity
resonances in the photocurrent spectra and surprisingly high Q-factors up to 6500. Temperature dependent
photocurrent measurements in the region between 4.5K and 310K show an exponential
enhancement of the photocurrent signal and an external quantum efficiency up to 0.26.}},
  author       = {{Quiring, W. and Al-Hmoud, M. and Rai, A. and Reuter, Dirk and Wieck, A. D. and Zrenner, Artur}},
  issn         = {{0003-6951}},
  journal      = {{Applied Physics Letters}},
  number       = {{4}},
  publisher    = {{AIP Publishing}},
  title        = {{{Photonic crystal cavities with metallic Schottky contacts}}},
  doi          = {{10.1063/1.4928038}},
  volume       = {{107}},
  year         = {{2015}},
}