Holger Frydrych

About Me

My name is Holger Frydrych. Already at a young age I became fascinated with computers and learned to write my first programs at the age of 9. Ever since, the art of computer programming and software design has been a strong interest of mine. I have a firm understanding of design principles and algorithms and consider myself a versatile programmer.

In an effort to broaden my horizon, I obtained a Master's degree in physics and am currently employed as a research assistant while pursuing a PhD degree in quantum information. I passed my PhD exam in December 2015.

In my free time, I love to play computer games and occasionally develop my own. I have also embarked on a journey to teach myself the guitar.

My Projects

RocksmithToTabopen sourceC#

Generates tab files for Guitar Pro from the Rocksmith 2014 tracks.

Rocksmith 2014 by Ubisoft is a great educational video game to help you learn guitar. I use it as a motivational aid and complement to my own guitar learning journey and to discover new and fun songs to play.

However, the visual representation of the notes to play in the game has certain shortcomings, and there are situations where I feel that looking at tablature makes learning certain parts of songs easier. That's why I wrote a tool to convert Rocksmith's tracks to tablature files usable with Guitar Pro.

The tool is written in C# and runs on both Windows and Mac (with Mono). It is primarily a console program, but also features a simple GUI frontend.

View on GitHub

Cheshire RescueC# Unity

A 48h game project I did with a friend over the winter holidays in 2015. It is based on (a subset of) the rules of the board game Flash Point, a cooperative game where you play as firemen trying to save people from a burning house.

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SectorMania - RTS game prototypePython

SectorMania is a simple and fun real-time strategy game strongly inspired by the classic Z! by the Bitmap Brothers. The current prototype was developed with Python and Pygame. It's been on hold for a while now, but I hope to port and update the prototype to Unity3D in the near future.

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Ogre3D - Open source graphics rendering engineopen sourceC++

Ogre3D is a popular cross-platform 3d graphics rendering engine written in C++. It has been used in several large commercial products. From 2009 to early 2013 I was a programmer and Linux maintainer in the Ogre team and created the current CMake build system.

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Editable Terrain Manager for Ogreopen sourceC++

I wrote this component for a 3D terrain editor I was working on. The Editable Terrain Manager can render and modify 2D heightmaps as visual 3D terrain, complete with editable texture splatting support. It has been superceded by Ogre's new Terrain component.

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Employment

Research assistant - TU Darmstadt & CROSSING (2011 - Present)

I am currently employed as a research assistant in the quantum optics group of Prof. Dr. Gernot Alber at TU Darmstadt and simultaneously at the collaborative research centre for cryptography-based security solutions, CROSSING.

My primary area of research is quantum information. At CROSSING, I contribute to project P4 (quantum key hubs) to develop scalable quantum cryptography technology. My publications are listed below; I have presented my results at conferences around the world, in Mexico, Switzerland and the Czech Republic. I submitted my PhD thesis in October 2015 and passed my PhD exam in December 2015.

Aside from my own research, I have supervised several BSc students and held lectures in my professor's place on multiple occasions.

Commissioned work

Knights of the Dark Age - ZuxxeZ Entertainment AG (2004 - 2005)

I developed an internet matchmaking server for the multiplayer part of the computer game Knights of the Dark Age. The server was written in C++.

LigaHQ - Gameswelt (2003 - 2004)

I was commissioned to lead the development of a web-based e-sports league system for the German gaming magazine gameswelt.de. The system allowed players to participate in tournaments and leagues in various games. Technologies used were PHP and MySQL. The system ran for several years at www.ligahq.de, but is no longer in service.

Earth 2150: Lost Souls - ZuxxeZ Entertainment AG (2001)

What started as a community-driven addon project for the computer game Earth 2150: The Moon Project, was eventually picked up by ZuxxeZ (now TopWare) for a commercial release as a standalone game. I was part of the community development team. I originally joined as a programmer, but ended up being responsible for story-writing and level design.

Scientific publications

The following publications are a result of my research position in the group of Prof. Dr. Gernot Alber at TU Darmstadt. My research focusses on the topic of dynamical decoupling, a quantum error suppression technique vital to protect quantum computation operations from environmental influences.

Advanced dynamical decoupling strategies for simulating Hamiltonian interactions - PhD Thesis, Technische Universität Darmstadt, D17 (2016)

Holger Frydrych

Pulse-controlled quantum gate sequences on a strongly coupled qubit chain - Phys. Rev. A 92, 062322 (2015)

Holger Frydrych, Michael Marthaler, Gernot Alber

View on arXiv

Suppressing systematic control errors to high orders - Phys. Rev. A 92, 022325 (2015)

Pavel Bažant, Holger Frydrych, Gernot Alber, Igor Jex

Selective dynamical decoupling for quantum state transfer - J. Phys. B: At. Mol. Opt. Phys. 48, 025501 (2015)

Holger Frydrych, Antonín Hoskovec, Gernot Alber, Igor Jex

View on arXiv

Effects of stochastic noise on dynamical decoupling procedures - Phys. Rev. A 89, 062327 (2014)

József Zsolt Bernád, Holger Frydrych

View on arXiv

Constructing Pauli pulse schemes for decoupling and quantum simulation - Phys. Rev. A 89, 022320 (2014)

Holger Frydrych, Gernot Alber, Pavel Bažant

View on arXiv

Developer, physicist

About Me

My Projects

RocksmithToTabopen sourceC#

Cheshire RescueC# Unity

SectorMania - RTS game prototypePython

Ogre3D - Open source graphics rendering engineopen sourceC++

Editable Terrain Manager for Ogreopen sourceC++

Employment

Research assistant - TU Darmstadt & CROSSING (2011 - Present)

Commissioned work

Knights of the Dark Age - ZuxxeZ Entertainment AG (2004 - 2005)

LigaHQ - Gameswelt (2003 - 2004)

Earth 2150: Lost Souls - ZuxxeZ Entertainment AG (2001)

Scientific publications

Advanced dynamical decoupling strategies for simulating Hamiltonian interactions - PhD Thesis, Technische Universität Darmstadt, D17 (2016)

Pulse-controlled quantum gate sequences on a strongly coupled qubit chain - Phys. Rev. A 92, 062322 (2015)

Suppressing systematic control errors to high orders - Phys. Rev. A 92, 022325 (2015)

Selective dynamical decoupling for quantum state transfer - J. Phys. B: At. Mol. Opt. Phys. 48, 025501 (2015)

Effects of stochastic noise on dynamical decoupling procedures - Phys. Rev. A 89, 062327 (2014)

Constructing Pauli pulse schemes for decoupling and quantum simulation - Phys. Rev. A 89, 022320 (2014)

Centre-of-mass motion-induced decoherence and entanglement generation in a hybrid quantum repeater - J. Phys. B: At. Mol. Opt. Phys. 46, 235501 (2013)