Efficient implementation of the continuous-time hybridization expansion quantum impurity solver. - Hartmut Hafermann; Philipp Werner; Emanuel Gull (Comput. Phys. Commun., 2013)

TRIQS: A toolbox for research on interacting quantum systems. - Olivier Parcollet; Michel Ferrero; Thomas Ayral; Hartmut Hafermann; Igor Krivenko; Laura Messio; Priyanka Seth (Comput. Phys. Commun., 2015)

Optical fiber MIMO channel model and its analysis. - Apostolos Karadimitrakis; Aris L. Moustakas; Hartmut Hafermann; Axel Müller 001 (ISIT, 2016)

Design of MLSD-based receivers for short-range optical communications using the Volterra expansion. - Raquel G. Machado; Beatrice Tomasi; Hartmut Hafermann; Stefano Tomasin (SPAWC, 2016)

Polarization-Division Multiplexing Based on the Nonlinear Fourier Transform. - Jan-Willem Goossens; Mansoor I. Yousefi; Yves Jaouën; Hartmut Hafermann (CoRR, 2017)

Increasing Achievable Information Rates via Geometric Shaping. - Bin Chen 006; Chigo Okonkwo; Hartmut Hafermann; Alex Alvarado (ECOC, 2018)

Capacity Analysis of Delayed Bit Interleaved Coded Modulation. - Xi Yan 002; Raquel G. Machado; Kechao Huang; Frederic Gabry; Marc P. C. Fossorier; Hartmut Hafermann; Huijian Zhang; Ingmar Land; Raymond W. K. Leung (ISTC, 2018)

Nonlinearity-tolerant 8D Modulation Formats by Set-partitioning PDM-QPSK. - Djalal F. Bendimerad; Hartmut Hafermann; Huijian Zhang (OFC, 2018)

Partially Ordered Statistics Demapping for Multi-Dimensional Modulation Formats. - Djalal F. Bendimerad; Huijian Zhang; Ingmar Land; Hartmut Hafermann (OFC, 2019)

Experimental Demonstration of Data Transmission Based on the Exact Inverse Periodic Nonlinear Fourier Transform. - Jan-Willem Goossens; Yves Jaouën; Hartmut Hafermann (OFC, 2019)

11, 700 km Transmission at 4.8 bit/4D-sym via Four-dimensional Geometrically-shaped Polarization-Ring-Switching Modulation. - Sjoerd van der Heide; Bin Chen 006; Menno van den Hout; Gabriele Liga; Ton Koonen; Hartmut Hafermann; Alex Alvarado; Chigo Okonkwo (OECC/PSC, 2019)

Polarization-ring-switching for nonlinearity-tolerant geometrically-shaped four-dimensional formats maximizing generalized mutual information. - Bin Chen 006; Chigo Okonkwo; Hartmut Hafermann; Alex Alvarado (CoRR, 2019)

Data Transmission based on Exact Inverse Periodic Nonlinear Fourier Transform, Part I: Theory. - Jan-Willem Goossens; Hartmut Hafermann; Yves Jaouën (CoRR, 2019)

Data Transmission based on Exact Inverse Periodic Nonlinear Fourier Transform, Part II: Waveform Design and Experiment. - Jan-Willem Goossens; Hartmut Hafermann; Yves Jaouën (CoRR, 2019)

Analysis and Experimental Demonstration of Orthant-Symmetric Four-dimensional 7 bit/4D-sym Modulation for Optical Fiber Communication. - Bin Chen 006; Alex Alvarado; Sjoerd van der Heide; Menno van den Hout; Hartmut Hafermann; Chigo Okonkwo (CoRR, 2020)

Practical Product Code Construction of Polar Codes. - Carlo Condo; Valerio Bioglio; Hartmut Hafermann; Ingmar Land (IEEE Trans. Signal Process., 2020)

OSNR prediction for optical links via learned noise figures. - Sarah Kamel; Hartmut Hafermann; Dylan Le Gac; Ludovic Dos Santos; Balázs Kégl; Yann Frignac; Gabriel Charlet (ECOC, 2021)

On the Robustness of a ML-based Method for QoT Tool Parameter Refinement in Partially Loaded Networks. - Nathalie Morette; Ivan Fernandez de Jauregui Ruiz; Hartmut Hafermann; Yvan Pointurier (OFC, 2022)

Preemphasis-Aware Semiconductor Optical Amplifier Model. - Hartmut Hafermann; Xiaohui Zhao; Shuqi Yu; Yann Frignac (OFC, 2023)

Machine learning enhancement of a digital twin for wavelength division multiplexing network performance prediction leveraging quality of transmission parameter refinement. - Nathalie Morette; Hartmut Hafermann; Yann Frignac; Yvan Pointurier (J. Opt. Commun. Netw., 2023)

Parameter Estimation of Semi-Conductor Optical Amplifier Booster based on Digital Signal Processing. - Tarek Eldahrawy; Abir Hraghi; Abel Lorences-Riesgo; Trung-Hien Nguyen; Iosif Demirtzioglou; Loig Godard; Hartmut Hafermann; Nayla El Dahdah; Yu Zhao; Yann Frignac; Gabriel Charlet (OFC, 2024)

Mitigation of coherent nonlinear noise accumulation in transmission across cascaded SOAs. - Hartmut Hafermann; Loig Godard; Xiaohui Zhao; Abel Lorences-Riesgo; Zhenzhen Zhang; Romain Brenot; Yann Frignac; Gabriel Charlet (OFC, 2025)

Digital Pre-Distortion for Drivers and SOAs Nonlinearities Enabling Power Budget Extension. - Xiaohui Zhao; Trung-Hien Nguyen; Loig Godard; Nayla El Dahdah; Romain Brenot; Sheherazade Lamkadmi Azouigui; Hartmut Hafermann; Massimo Tornatore; Yann Frignac; Sami Mumtaz; Abel Lorences-Riesgo; Gabriel Charlet (OFC, 2025)