@article{34091,
author = {{Kunnathully, Vinay S. and Riedl, Thomas and Trapp, Alexander and Langer, Timo and Reuter, Dirk and Lindner, Jörg}},
issn = {{0022-0248}},
journal = {{Journal of Crystal Growth}},
keywords = {{Materials Chemistry, Inorganic Chemistry, Condensed Matter Physics}},
publisher = {{Elsevier BV}},
title = {{{InAs heteroepitaxy on nanopillar-patterned GaAs (111)A}}},
doi = {{10.1016/j.jcrysgro.2020.125597}},
volume = {{537}},
year = {{2020}},
}
@article{34090,
author = {{Riedl, Thomas and Lindner, Jörg}},
issn = {{0038-1098}},
journal = {{Solid State Communications}},
keywords = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
publisher = {{Elsevier BV}},
title = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
doi = {{10.1016/j.ssc.2020.113927}},
volume = {{314-315}},
year = {{2020}},
}
@article{34089,
author = {{Riedl, Thomas and Lindner, Jörg}},
issn = {{0038-1098}},
journal = {{Solid State Communications}},
keywords = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
publisher = {{Elsevier BV}},
title = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
doi = {{10.1016/j.ssc.2020.113927}},
volume = {{314-315}},
year = {{2020}},
}
@inproceedings{24020,
abstract = {{Novel analog-to-digital converter (ADC) architectures are motivated by the demand for rising sampling rates and effective number of bits (ENOB). The main limitation on ENOB in purely electrical ADCs lies in the relatively high jitter of oscillators, in the order of a few tens of fs for state-of-the-art components. When compared to the extremely low jitter obtained with best-in-class Ti:sapphire mode-locked lasers (MLL), in the attosecond range, it is apparent that a mixed electrical-optical architecture could significantly improve the converters' ENOB. We model and analyze the ENOB limitations arising from optical sources in optically enabled, spectrally sliced ADCs, after discussing the system architecture and implementation details. The phase noise of the optical carrier, serving for electro-optic signal transduction, is shown not to propagate to the reconstructed digitized signal and therefore not to represent a fundamental limit. The optical phase noise of the MLL used to generate reference tones for individual slices also does not fundamentally impact the converted signal, so long as it remains correlated among all the comb lines. On the other hand, the timing jitter of the MLL, as also reflected in its RF linewidth, is fundamentally limiting the ADC performance, since it is directly mapped as jitter to the converted signal. The hybrid nature of a photonically enabled, spectrally sliced ADC implies the utilization of a number of reduced bandwidth electrical ADCs to convert parallel slices, resulting in the propagation of jitter from the electrical oscillator supplying their clock. Due to the reduced sampling rate of the electrical ADCs, as compared to the overall system, the overall noise performance of the presented architecture is substantially improved with respect to a fully electrical ADC.}},
author = {{Zazzi, Andrea and Müller, Juliana and Gudyriev, Sergiy and Marin-Palomo, Pablo and Fang, Dengyang and Scheytt, Christoph and Koos, Christian and Witzens, Jeremy}},
booktitle = {{21. ITG-Fachtagung Photonische Netze}},
publisher = {{VDE-Verlag}},
title = {{{Mode-locked laser timing jitter limitation in optically enabled frequency-sliced ADCs}}},
year = {{2020}},
}
@article{24025,
abstract = {{The effect of phase noise introduced by optical sources in spectrally-sliced optically enabled DACs and ADCs is modeled and analyzed in detail. In both data converter architectures, a mode-locked laser is assumed to provide an optical comb whose lines are used to either synthesize or analyze individual spectral slices. While the optical phase noise of the central MLL line as well as of other optical carriers used in the analyzed system architectures have a minor impact on the system performance, the RF phase noise of the MLL fundamentally limits it. In particular, the corresponding jitter of the MLL pulse train is transferred almost one-to-one to the system-level timing jitter of the data converters. While MLL phase noise can in principle be tracked and removed by electronic signal processing, this results in electric oscillator phase noise replacing the MLL jitter and is not conducive in systems leveraging the ultra-low jitter of low-noise mode-locked lasers. Precise analytical models are derived and validated by detailed numerical simulations.}},
author = {{Zazzi, Andrea and Müller, Juliana and Gudyriev, Sergiy and Marin-Palomo, Pablo and Fang, Dengyang and Scheytt, Christoph and Koos, Christian and Witzens, Jeremy}},
journal = {{Opt. Express}},
title = {{{Fundamental limitations of spectrally-sliced optically enabled data converters arising from MLL timing jitter}}},
doi = {{10.1364/OE.382832}},
volume = {{28}},
year = {{2020}},
}
@inproceedings{24028,
abstract = {{A 28 Gbps NRZ bang-bang clock and data recovery (CDR) chip for 100G PSM4 is presented. It exhibits an adaptable loop filter transfer function with independently tunable proportional and integral parameters. This allows to optimize the jitter transfer, jitter tolerance, and locking range of the CDR according to system requirements. The CDR represents a key component for a single-chip 8-channel electronic-photonic PSM4 transceiver. A CDR chip was manufactured in a 0.25 μm monolithic photonic BiCMOS technology. The core chip area is 0.51 mm 2 and it dissipates 330 mW from 2.5 V and 3.3 V power supplies.}},
author = {{Iftekhar, Mohammed and Gudyriev, Sergiy and Scheytt, Christoph}},
booktitle = {{2020 IEEE 20th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF)}},
publisher = {{IEEE}},
title = {{{28 Gbps Bang-Bang CDR for 100G PSM4 with Independently Tunable Proportional and Integral Parameters of the Loop Filter in 0.25 µm Photonic BiCMOS Technology}}},
doi = {{10.1109/SIRF46766.2020.9040190}},
year = {{2020}},
}
@article{16301,
author = {{Atorf, Bernhard and Mühlenbernd, Holger and Zentgraf, Thomas and Kitzerow, Heinz-Siegfried}},
issn = {{1094-4087}},
journal = {{Optics Express}},
number = {{6}},
pages = {{8898--8908}},
title = {{{All-optical switching of a dye-doped liquid crystal plasmonic metasurface}}},
doi = {{10.1364/oe.383877}},
volume = {{28}},
year = {{2020}},
}
@inproceedings{24024,
abstract = {{Recently it has been demonstrated that an optoelectronic phase-locked loop (OEPLL) using a mode-locked laser as a reference oscillator achieves significantly lower phase noise than conventional electronic frequency synthesizers. In this paper a concept for an OEPLL-based frequency synthesizer is presented and it is investigated how it can be used as a local oscillator (LO) for THz transceivers in order to improve the signal quality in THz wireless communications. The concept of the OEPLL is presented and it's measured phase noise is compared to the phase noise of a laboratory-grade electronic frequency synthesizer. The measured phase noise spectra of both synthesizers at 10 GHz are then used to model LO phase noise at 320 GHz. Based on models of generic zero-IF transmit and receive frontends, THz signals with different modulation formats and Baud rates are simulated at system level using the modeled LO phase noise for the two LO approaches. Finally, the results are compared.}},
author = {{Scheytt, Christoph and Wrana, Dominik and Bahmanian, Meysam and Kallfass, Ingmar}},
booktitle = {{2020 Third International Workshop on Mobile Terahertz Systems (IWMTS)}},
location = {{Essen, Germany }},
title = {{{Ultra-Low Phase Noise Frequency Synthesis for THz Communications Using Optoelectronic PLLs}}},
doi = {{10.1109/IWMTS49292.2020.9166347}},
year = {{2020}},
}
@article{22056,
author = {{Spychala, K. J. and Mackwitz, P. and Rüsing, Michael and Widhalm, A. and Berth, Gerhard and Silberhorn, Christine and Zrenner, Artur}},
issn = {{0021-8979}},
journal = {{Journal of Applied Physics}},
title = {{{Nonlinear focal mapping of ferroelectric domain walls in LiNbO3: Analysis of the SHG microscopy contrast mechanism}}},
doi = {{10.1063/5.0025284}},
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}},
}
@inproceedings{24023,
abstract = {{This paper presents an ultra-wideband and ultra-low noise frequency synthesizer using a mode-locked laser as its reference. The frequency synthesizer can lock in the frequency range from 2 GHz to 20 GHz on any harmonic of a mode-locked laser optical pulse train. The integrated rms-jitter (1 kHz-100 MHz) of the synthesizer is less than 5 fs in the frequency range from 4 GHz to 20 GHz with a typical value of 4 fs and a minimum of 3 fs. This is the first reported wideband phase locked loop achieving sub-10 fs rms-jitter for offset frequencies larger than 1 kHz.}},
author = {{Bahmanian, Meysam and Fard, Saeed and Koppelmann, Bastian and Scheytt, Christoph}},
booktitle = {{ 2020 IEEE/MTT-S International Microwave Symposium (IMS)}},
publisher = {{IEEE}},
title = {{{Wide-Band Frequency Synthesizer with Ultra-Low Phase Noise Using an Optical Clock Source}}},
doi = {{10.1109/IMS30576.2020.9224118}},
year = {{2020}},
}
@article{37934,
author = {{Mukamel, Shaul and Freyberger, Matthias and Schleich, Wolfgang and Bellini, Marco and Zavatta, Alessandro and Leuchs, Gerd and Silberhorn, Christine and Boyd, Robert W and Sánchez-Soto, Luis Lorenzo and Stefanov, André and Barbieri, Marco and Paterova, Anna and Krivitsky, Leonid and Shwartz, Sharon and Tamasaku, Kenji and Dorfman, Konstantin and Schlawin, Frank and Sandoghdar, Vahid and Raymer, Michael and Marcus, Andrew and Varnavski, Oleg and Goodson, Theodore and Zhou, Zhi-Yuan and Shi, Bao-Sen and Asban, Shahaf and Scully, Marlan and Agarwal, Girish and Peng, Tao and Sokolov, Alexei V and Zhang, Zhe-Dong and Zubairy, M Suhail and Vartanyants, Ivan A and del Valle, Elena and Laussy, Fabrice}},
issn = {{0953-4075}},
journal = {{Journal of Physics B: Atomic, Molecular and Optical Physics}},
keywords = {{Condensed Matter Physics, Atomic and Molecular Physics, and Optics}},
number = {{7}},
publisher = {{IOP Publishing}},
title = {{{Roadmap on quantum light spectroscopy}}},
doi = {{10.1088/1361-6455/ab69a8}},
volume = {{53}},
year = {{2020}},
}
@article{37935,
author = {{Meyer-Scott, Evan and Silberhorn, Christine and Migdall, Alan}},
issn = {{0034-6748}},
journal = {{Review of Scientific Instruments}},
keywords = {{Instrumentation}},
number = {{4}},
publisher = {{AIP Publishing}},
title = {{{Single-photon sources: Approaching the ideal through multiplexing}}},
doi = {{10.1063/5.0003320}},
volume = {{91}},
year = {{2020}},
}
@article{37932,
abstract = {{Hybrid quantum information processing combines the advantages of discrete and continues variable protocols by realizing protocols consisting of photon counting and homodyne measurements. However, the mode structure of pulsed sources and the properties of the detection schemes often require the use of optical filters in order to combine both detection methods in a common experiment. This limits the efficiency and the overall achievable squeezing of the experiment. In our work, we use photon subtraction to implement the distillation of pulsed squeezed states originating from a genuinely spatially and temporally single-mode parametric down-conversion source in non-linear waveguides. Due to the distillation, we witness an improvement of 0.17 dB from an initial squeezing value of −1.648 ± 0.002 dB, while achieving a purity of 0.58, and confirm the non-Gaussianity of the distilled state via the higher-order cumulants. With this, we demonstrate the source’s suitability for scalable hybrid quantum network applications with pulsed quantum light.}},
author = {{Dirmeier, Thomas and Tiedau, Johannes and Khan, Imran and Ansari, Vahid and Müller, Christian R. and Silberhorn, Christine and Marquardt, Christoph and Leuchs, Gerd}},
issn = {{1094-4087}},
journal = {{Optics Express}},
keywords = {{Atomic and Molecular Physics, and Optics}},
number = {{21}},
publisher = {{Optica Publishing Group}},
title = {{{Distillation of squeezing using an engineered pulsed parametric down-conversion source}}},
doi = {{10.1364/oe.402178}},
volume = {{28}},
year = {{2020}},
}
@article{21025,
author = {{Eigner, Christof and Padberg, Laura and Santandrea, Matteo and Herrmann, Harald and Brecht, Benjamin and Silberhorn, Christine}},
issn = {{1094-4087}},
journal = {{Optics Express}},
number = {{22}},
title = {{{Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides}}},
doi = {{10.1364/oe.399483}},
volume = {{28}},
year = {{2020}},
}
@article{40233,
author = {{Meier, Lukas and Braun, Christian and Hannappel, Thomas and Schmidt, Wolf Gero}},
issn = {{0370-1972}},
journal = {{physica status solidi (b)}},
keywords = {{Condensed Matter Physics, Electronic, Optical and Magnetic Materials}},
number = {{2}},
publisher = {{Wiley}},
title = {{{Band Alignment at Ga x In 1– x P/Al y In 1– y P Alloy Interfaces from Hybrid Density Functional Theory Calculations}}},
doi = {{10.1002/pssb.202000463}},
volume = {{258}},
year = {{2020}},
}
@article{17067,
author = {{Speiser, Eugen and Esser, Norbert and Halbig, Benedikt and Geurts, Jean and Schmidt, Wolf Gero and Sanna, Simone}},
issn = {{0167-5729}},
journal = {{Surface Science Reports}},
number = {{1}},
title = {{{Vibrational Raman spectroscopy on adsorbate-induced low-dimensional surface structures}}},
doi = {{10.1016/j.surfrep.2020.100480}},
volume = {{75}},
year = {{2020}},
}
@article{26294,
author = {{Sperling, Jan and Phillips, D. S. and Bulmer, J. F. F and Thekkadath, G. S. and Eckstein, A. and Wolterink, T. A. W. and Lugani, J. and Nam, S. W. and Lita, A. and Gerrits, T. and Vogel, W. and Agarwal, G. S. and Silberhorn, Christine and Walmsley, I. A.}},
issn = {{0031-9007}},
journal = {{Physical Review Letters}},
title = {{{Detector-Agnostic Phase-Space Distributions}}},
doi = {{10.1103/physrevlett.124.013605}},
year = {{2020}},
}
@article{21023,
author = {{Engelkemeier, M. and Lorz, L. and De, Syamsundar and Brecht, Benjamin and Dhand, I. and Plenio, M. B. and Silberhorn, Christine and Sperling, Jan}},
issn = {{2469-9926}},
journal = {{Physical Review A}},
title = {{{Quantum photonics with active feedback loops}}},
doi = {{10.1103/physreva.102.023712}},
volume = {{102}},
year = {{2020}},
}
@article{26289,
author = {{Nitsche, Thomas and De, Syamsundar and Barkhofen, Sonja and Meyer-Scott, Evan and Tiedau, Johannes and Sperling, Jan and Gábris, Aurél and Jex, Igor and Silberhorn, Christine}},
issn = {{0031-9007}},
journal = {{Physical Review Letters}},
title = {{{Local Versus Global Two-Photon Interference in Quantum Networks}}},
doi = {{10.1103/physrevlett.125.213604}},
year = {{2020}},
}