Ramanujan quantum expanders from the Weil representation

arXiv:2609.38075 · quant-ph, cs.CC · Submitted 2026-09-29 · Read on arXiv

quant-ph, cs.CC

Submitted: 2026-09-29

Updated: 2026-09-29

Terminology

• Trace — 15× in this paper · explained in 2 episodes
• Hilbert Space — 3× in this paper · explained in 2 episodes
• For PSL2 — 1× in this paper
• Generative AI — 1× in this paper · explained in 2 episodes
• Quantum Circuits — 1× in this paper · explained in 2 episodes

Sources

• Quantum expanders from any classical Cayley graph expander
• Efficient quantum circuits for high-dimensional representations of SU(n) and Ramanujan quantum expanders
• Breaking the cubic barrier in the Solovay-Kitaev algorithm

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