arXiv:2602.00287 · 2026
Aravind Karthigeyan Condensed-matter theory, magnonics, topology, and quantum information.
I am an incoming physics Ph.D. student at the University of Illinois Urbana-Champaign. My research sits at the boundary of condensed-matter theory and quantum information, with current work 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 May 2026. I use quantum-information tools to tackle condensed-matter problems, and many-body techniques to reason about quantum devices.
Selected publications
Quantum Complexity course project, S. Aaronson, UT Austin · 2025
News
- Completed a B.S. in physics and mathematics at UT Austin.
- New preprint on room-temperature cavity-magnonic correlated microwave pairs posted to arXiv:2602.00287.
- Contributed talk on Nondegenerate Parametric Down-Conversion of Magnons at TECHCON (SRC), Austin.
- Joined the SUPREME REU program at MIT, advised by Luqiao Liu.
- Presented on ReS2 characterization at the Texas Section APS meeting.
Research snapshot
Three ongoing threads — full writeups with question, motivation, approach, output, and context on the research page.
Magnonics
Spin-wave propagation, cavity-magnon coupling, and room-temperature parametric down-conversion of magnons.
Magnonics details →Topology
Stiefel-Whitney invariants in nodal-line semimetals and their transport signatures via the Kubo formula.
Topology details →Complexity
Continuous-time quantum search and boson-sampling-style hardness arguments for near-term photonic devices.
Complexity details →Notes
Research updates, talk notes, and ideas worth writing down. RSS ↓
Contact
The fastest way to reach me is email: aravindkarthigeyan@utexas.edu.