Non-identical anyonic algebras from compact-field quantum geometry

Abstract:Compact scalar field theories on lattices are capable of describing a large class of many-body systems, such as interacting bosons, superconducting circuit networks, spin systems and more. We show that a generic quantum geometric many-body coupling induces quantized Chern couplings, implementing a lattice network version of a Floreanini-Jackiw theory. Quantum geometry thus unlocks a direct mapping from scalar fields to anyon-like algebras with fractional exchange phases, relevant for quantum error correction codes and quantum chemistry computation applications. In contrast to more familiar local Chern-Simons constructions with a uniform level, the compact-phase quantum geometry considered here yields pair-dependent topological couplings that can be nonlocal in node space and are encoded by a nonuniform first-Chern matrix. This feature introduces the notion of non-identical anyonic algebras, in which different pairs of projected excitations obey different exchange relations. Such non-identical exchange statistics open up a microscopic pathway to a virtually unexplored class of non-local field theories breaking the Wigner superselection rule, allowing to explore non-local communication (all-to-all qubit gates) with local control.

Quantum Physics (quant-ph); Superconductivity (cond-mat.supr-con)

arXiv:2410.20835 [quant-ph]

(or arXiv:2410.20835v5 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2410.20835 Focus to learn more arXiv-issued DOI via DataCite

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