Within the seminar, students give talks on current topics in condensed matter physics. The seminar aims to give a closer look at new developments in condensed matter physics and to show how these developments can be transferred into applications. The seminar focuses on spin electronics, spin dynamics, solid-state quantum information processing, the physics of solid-state nanostructures, and high temperature superconductivity. These topics are in the focus of several research projects of WMI and collaborative research programs in the Munich area (e.g. the Excellence Cluster "Munich Center for Quantum Science and Technology (MCQST)", the Munich Quantum Valley e.V., as well as several BMBF and EU projects).

The seminar is relevant for the special courses on Quantum Science and Technology, Superconductivity and Low Temperature Physics as well as on Magnetism and Spintronics. It is suitable for bachelor students in the 5th semester or higher and for master students.

Schedule

List of open topics for seminar talks in WS 2024/2025:

1. Operating semiconductor quantum processors with hopping spins (C.-A. Wang, Science 385, 447 (2024))

2. High-temperature quantum valley Hall effect with quantized resistance and a topological switch (K. Huang et al., Science 385, 657 (2024))

3. Advanced CMOS manufacturing of superconducting qubits on 300 mm wafers (J. Van Damme et al., Nature 2024)

4. Nonreciprocal magnetoacoustic waves without-of- plane phononic angular momenta (L. Liao et al., Science Advances 10, eado20504 (2024))

5. Efficient Microwave Photon-to-Electron Conversion in a High-Impedance Quantum Circuit (O. Stanisavljević et al., Physical Review Letters 133, 076302 (2024))

6. Phonon chirality from impurity scattering in the antiferromagnetic phase of Sr₂IrO₄ (Amirreza Ataei et al., Nature Physics 20, 585 (2024))

7. Direct observation of altermagnetic band splitting in CrSb thin films (Sonka Reimers et al., Nature Commun. 15, 2116 (2024))

8. Quantum spin nematic phase in a square-lattice iridate (Hoon Kim et al., Nature 625 264-269 (2024))

9. Finite-momentum Cooper pairing in proximitized altermagnets (Song-Bo Zhang et al., Nature Commun. 15, 1801 (2024))

10. Quantum oscillations of the quasiparticle lifetime in a metal (N. Huber et al., Nature 621, 276-281 (2023))

11. A quantum electromechanical interface for long-lived phonons (A. Bozkurt et al., Nature Physics 19 1326-1332 (2023))

12. Quantum advantage in microwave quantum radar (R. Assouly et al., Nature Physics 19, 1418-1422 (2023))

13. Microwave Fluorescence Detection of Spin Echoes (E. Billaud et al., Phys. Rev. Lett. 131, 100804 (2023))

14. Fluctuation-enhanced phonon magnetic moments in a polar antiferromagnet (F. Wu et al., Nature Physics (2023))

15. Time-domain observation of ballistic orbital-angular-momentum currents with giant relaxation length in tungsten (T.S. Seifert et al., Nature Nanotechnology (2023))

16. Indistinguishable telecom band photons from a single Er ion in the solid state (S. Ourari et al., Nature 620, 977-981 (2023))

17. Millisecond Coherence in a Superconducting Qubit (Aaron Somoroff et al., Phys. Rev. Lett. 130, 267001 (2023))

18. Beating the break-even point with a discrete-variable-encoded logical qubit (Zhongchu Ni et al., Nature 616, 56-60 (2023))

19. Macroscopic Quantum Test with Bulk Acoustic Wave Resonators (Björn Schrinski et al., Phys. Rev. Lett. 130, 133604 (2023))

20. On-demand directional microwave photon emission using waveguide quantum electrodynamics (Bharath Kannan et al., Nature Physics 19, 394 (2023))

21. Nonlinear multi-frequency phonon lasers with active levitated optomechanics (Tengfang Kuang et al., Nature Physics 19, 414 (2023))

22. Cavity-mediated long-range interactions in levitated optomechanics (J. Vijayan et al., Nature Physics 20, 829 (2024))

23. Quantum control of a cat qubit with bit-flip times exceeding ten seconds (U. Reglade et al., Nature 629, 778 (2024))

24. One-dimensional proximity superconductivity in the quantum Hall regime (J. Barrier et al., Nature 628, 741 (2024))

25. Persistent magnetic coherence in magnets (T. Makiuchi et al., Nature Materials 23, 627-632 (2024))

26. Tunable Inductive Coupler for High-Fidelity Gates Between Fluxonium Qubits (H. Zhang et al., PRX Quantum 5, 020326 (2024))