About Condensed-matter theorist working on magnonics, topology, and quantum information.
I am a theoretical condensed-matter physicist interested in the boundary between quantum information and many-body physics. My work focuses on magnonic systems and cavity-magnon coupling, topological phases in nodal-line semimetals, and the computational complexity of bosonic quantum devices. I completed my B.S. in physics and mathematics at the University of Texas at Austin in December 2025, and will begin my Ph.D. in physics at the University of Illinois Urbana-Champaign in the fall of 2026.
I use quantum-information tools to tackle condensed-matter problems, and many-body techniques to design better qubits. The projects I find most rewarding live at that collision — where it is not obvious in advance which tradition should do the work.
Selected publications
News
- Feb 2026New preprint on room-temperature cavity-magnonic correlated microwave pairs posted to arXiv:2602.00287.
- Dec 2025Graduated from UT Austin with a B.S. in physics and mathematics.
- Oct 2025Contributed talk on Nondegenerate Parametric Down-Conversion of Magnons at TECHCON (SRC), Austin.
- Oct 2024Presented on ReS2 characterization at the Texas Section APS meeting.
- Jun 2024Joined the SUPREME REU program at MIT, advised by Luqiao Liu.
Research snapshot
Three ongoing threads — full writeups with the five-field rubric on the research page.
Magnonics
Spin-wave propagation, cavity-magnon coupling, and room-temperature parametric down-conversion of magnons.
Read more →Topology
Stiefel–Whitney invariants in nodal-line semimetals and their transport signatures via the Kubo formula.
Read more →Complexity
Continuous-time quantum search and boson-sampling-style hardness arguments for near-term photonic devices.
Read more →Writing
Research updates, talk notes, and ideas worth writing down. RSS ↓
Contact
The fastest way to reach me is email: aravindkarthigeyan@utexas.edu.