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PreprintCC BY 4.0Zenodo

[06]Deterministic Geometric Decoupling for Scalable Many-Body Scar Arrays and Multiplexing

  • Wenjun Luo1
  1. 1Independent Researcher
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Abstract

Quantum many-body scars are a core mechanism of weak ergodicity breaking, but deterministically protecting and scaling these fragile coherent states remains a great challenge. We propose a purely geometric scheme based on connectivity engineering: by reconstructing the network topology with fixed-step hopping, the parent system is strictly decoupled into multiple equal-length independent sub-chains. We validate this mechanism in the PXP model featuring scar states. Numerical results demonstrate that within the decoupled network, the sub-chain interiors not only independently inherit the many-body scar properties of the parent (manifested as long-lived staggered magnetization oscillations and finite-size revivals of entanglement entropy), but also, due to the geometric blockades, the cross-channel quantum mutual information is strictly blocked at the machine precision limit. This mechanism requires no complex external fine-tuning, providing a minimal and deterministic blueprint for multi-channel quantum memory multiplexing in quantum chips.

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Cite

BibTeXRIS
BibTeX
@misc{luo202606deterministic,
  title = {{[06]Deterministic Geometric Decoupling for Scalable Many-Body Scar Arrays and Multiplexing}},
  author = {Wenjun Luo},
  howpublished = {Zenodo},
  year = {2026},
  month = oct,
  doi = {10.5281/zenodo.23617567},
  url = {https://zenodo.org/records/23617567},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - [06]Deterministic Geometric Decoupling for Scalable Many-Body Scar Arrays and Multiplexing
AU  - Wenjun Luo
PY  - 2026
DA  - 2026/10/24
PB  - Zenodo
DO  - 10.5281/zenodo.23617567
UR  - https://zenodo.org/records/23617567
AB  - Quantum many-body scars are a core mechanism of weak ergodicity breaking, but deterministically protecting and scaling these fragile coherent states remains a great challenge. We propose a purely geometric scheme based on connectivity engineering: by reconstructing the network topology with fixed-step hopping, the parent system is strictly decoupled into multiple equal-length independent sub-chains. We validate this mechanism in the PXP model featuring scar states. Numerical results demonstrate that within the decoupled network, the sub-chain interiors not only independently inherit the many-body scar properties of the parent (manifested as long-lived staggered magnetization oscillations and finite-size revivals of entanglement entropy), but also, due to the geometric blockades, the cross-channel quantum mutual information is strictly blocked at the machine precision limit. This mechanism requires no complex external fine-tuning, providing a minimal and deterministic blueprint for multi-channel quantum memory multiplexing in quantum chips.
ER  -