269 citations · 554 across the 14 of their papers we have counts for
Showing 2021 · quant-phShow all
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quant-ph2021★ 13 cited
Multipartite entanglement of the topologically ordered state in a perturbed toric code
Yu-Ran Zhang, Yu Zeng, Tao Liu +3
We demonstrate that multipartite entanglement, witnessed by the quantum Fisher information (QFI), can characterize topological quantum phase transitions in the spin- t…
quant-ph2021★ 21 cited
Exact zeros of the Loschmidt echo and quantum speed limit time for the dynamical quantum phase transition in finite-size systems
Bozhen Zhou, Yumeng Zeng, Shu Chen
We study exact zeros of Loschmidt echo and quantum speed limit time for dynamical quantum phase transition in finite size systems. Our results illustrate that exact zeros of Loschm…
quant-ph2021★ 1 cited
Protecting topological order by dynamical localization
Yu Zeng, Alioscia Hamma, Yu-Ran Zhang +3
As a prototype model of topological quantum memory, two-dimensional toric code is genuinely immune to generic local static perturbations, but fragile at finite temperature and also…