3 papers
quant-ph2026
Quantum Cellular Automata on Symmetric Subalgebras
Ruochen Ma, Yabo Li, Meng Cheng
We investigate quantum cellular automata (QCA) on one-dimensional spin systems defined over a subalgebra of the full local operator algebra - the symmetric subalgebra under a finit…
cond-mat.dis-nn2026
Average Categorical Symmetries in One-Dimensional Disordered Systems
Yabo Li, Meng Cheng, Ruochen Ma
We study one-dimensional disordered systems with average non-invertible symmetries, where quenched disorder may locally break part of the symmetry while preserving it upon disorder…
quant-ph2025
Circuit-based characterization of finite-temperature quantum phases and self-correcting quantum memory
Ruochen Ma, Vedika Khemani, Shengqi Sang
Quantum phases at zero temperature can be characterized as equivalence classes under local unitary transformations: two ground states within a gapped phase can be transformed into…