Lennart Sobirey
Physicist with a passion for problem solving and understanding complex systems. Engineer with a strong background in math and software development. Experienced with cameras, optics, data analysis and visualisation. Fascinated by machine learning and computer vision. Thrives in motivated teams that want to move the world together. Enthusiastic science communicator and public speaker. Passionate teacher and team lead. Loves to learn new skills and take on new challenges.
Experience
Quantum Scientist
Building a quantum computer designed to solve combinatorial optimization problems using Yb atoms
- Designing a quantum optimization platform with 500 qbits
- Systems engineering of a state-of-the-art Rydberg tweezer experiment
- Developing flexible control systems in hardware and software
- Working in a large collaboration project with partners from industry and academia
Ph.D. Student
Ph.D. in experimental quantum mech (summa cum laude) - Optics / Systems / Software Engineering
- Designed and built a cutting-edge quantum simulator in a small team
- Developed a software platform in C++ to control experiments now used in labs around the world
- Recorded, analyzed and visualized terabytes of images in MATLAB
- Improved data analysis capabilities using CNNs
- Supervised students and taught seminars on quantum mechanics
- 9 high impact papers, 300+ citations
Technical Skills
- Languages: C/C++ (7 years) · MATLAB (11 years) · Python (5 years)
- Machine learning: Neural networks · Deep learning · CNNs · Pytorch
- Tools: git · Anaconda · NumPy · SciPy · Pandas · matplotlib · Plotly · Jupyter · LaTeX
- Optics: Imaging systems and cameras · Lasers and laser optics · High-resolution microscopy
- Engineering: CAD (Inventor, CATIA) · Electronics · RF · Systems Engineering
Selected Publications
Observation of superfluidity in a strongly correlated two-dimensional Fermi gas
L. Sobirey, N. Luick, M. Bohlen, H. Biss, H. Moritz, T. Lompe · 2021 · Science 372 (6544)
Observing the influence of reduced dimensionality on fermionic superfluids
L. Sobirey, H. Biss, N. Luick, M. Bohlen, H. Moritz, T. Lompe · 2021 · arXiv:2106.11893 · accepted in PRL
An ideal Josephson junction in an ultracold two-dimensional Fermi gas
N. Luick, L. Sobirey, M. Bohlen, V.P. Singh, L. Mathey, T. Lompe, H. Moritz · 2020 · Science 369 (6499)
Other Projects
Ilaris
I co-wrote a fully self-contained alternative rulebook for the most popular german Pen&Paper RPG called The Dark Eye. We redesigned the entire ruleset to be consistent and simple and published it for free online. Our rulebook got popular enough that the publisher of The Dark Eye reached out to us to publish it as a hardcover book, which is currently on its second printing run.
Sephrasto
I wrote the character creation software for Ilaris in Python, to enable players to simply create new characters on the fly. Contains the entire ruleset and allows for custom rulesets to be created.