Quantum

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21JAN. 2025
Allgemein
Science Giraffe Chelsea now on instagram
LEP member Chelsea has opened her own instagram channel (@science_chelsea). The science giraffe chelsea acts as our outreach voice who reports on our activities in the domain of Quantum Science of Light and Matter and gives insights behind the scenes. Follow her to learn more!
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15JAN. 2025
Allgemein
New publication about the quantum XXZ bilayer with long-range interactions
New publication entitled „Quantum-critical and dynamical properties of the XXZ bilayer with long-range interactions“ in Physical Review B (see https://journals.aps.org/prb/abstract/10.1103/PhysRevB.111.024409). Nice collaboration between LEP members Patrick Adelhardt, Antonia Duft, and Kai Phillip Schmidt. In our work we study the XXZ square lattice bilayer model with antiferromagnetic nonfrustrating long-range interactions that decay as a power law […]New publication entitled „Quantum-critical and dynamical properties of the XXZ bilayer with long-range interactions“ in Physical Review B (see https://journals.aps.org/prb/abstract/10.1103/PhysRevB.111.024409). Nice collaboration between LEP members Patrick Adelhardt, Antonia Duft, and Kai Phillip Schmidt. In our work we study the XXZ square lattice bilayer model with antiferromagnetic nonfrustrating long-range interactions that decay as a power law […]
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01JAN. 2025
Allgemein
Preprint about Kitaev bilayer materials
Check out the new preprint 2412.17495 by LEP members Antonia Duft, Patrick Adelhardt, and Kai Phillip Schmidt entitled „Quantum Phase Diagram of the Bilayer Kitaev-Heisenberg Model“. Great collaboration with Elahe Samimi and Saeed S. Jahromi from Institute for Advanced Studies in Basic Sciences, Zanjan. We study the ground-state phase diagram of the spin-1/2 Kitaev-Heisenberg model […]
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10DEZ. 2024
Allgemein
Congratulations to Dr. Matthias Walther
On 09.12. we had the great PhD defense of Matthias Walther under the supervision of Kai Phillip Schmidt. His thesis is entitled „Effective models for interacting Spin waves in two-dimensional quantum antiferromagnets“. In particular, he developed non-perturbative continuous similarity transformations to calculate physical properties of magnons in low-dimensional quantum magnets. The work is a close […]On 09.12. we had the great PhD defense of Matthias Walther under the supervision of Kai Phillip Schmidt. His thesis is entitled „Effective models for interacting Spin waves in two-dimensional quantum antiferromagnets“. In particular, he developed non-perturbative continuous similarity transformations to calculate physical properties of magnons in low-dimensional quantum magnets. The work is a close […]
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06DEZ. 2024
Allgemein
Congratulations to Dr. Matthias Mühlhauser
On 06.12. we had the great PhD defense of Matthias Mühlhauser under the supervision of Kai Phillip Schmidt. His thesis is entitled „Graph decomposition techniques for quantum spin systems with multi-spin interactions“. In particular, he developed hypergraph expansions for quantum lattice models containing multi-spin interactions like the toric code or fractonic systems.
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06DEZ. 2024
Allgemein
Preprint about new type of toric code
Check out the new preprint 2411.19051 by LEP members Max Vieweg and Kai Phillip Schmidt entitled „Fracton and topological order in the XY checkerboard toric code“. The conventional 2D toric code is the most paradigmatic, simplest, and exactly solvable model displaying topological order, which has been proposed as quantum memory and is relevant for quantum […]
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