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7 papers · 1 filter
Unified Bulk-Entanglement Correspondence in Non-Hermitian Systems
Xudong Zhang, Zhaoyu Sun, Bin Guo
The non-Hermitian skin effect (NHSE) fundamentally invalidates the conventional bulk-boundary correspondence (BBC), leading topological diagnostics into a crisis. While the non-Blo…
Intrinsic Mirror Symmetry and Robustness of Optimal Nonlocal Operators in One-Dimensional Quantum Spin Chains
Jia Bao, Bin Guo, Shu Qu +3
Multipartite nonlocality has been extensively investigated within one-dimensional quantum lattices. Previous research has primarily focused on the nonlocality measure , which qu…
Multi-partite quantum nonlocality and Bell-type inequalities in an infinite-order quantum phase transition of the one-dimensional spin-1/2 XXZ chain
Zhao-Yu Sun, Shuang Liu, Hai-Lin Huang +7
In this paper, combined with infinite time-evolving block decimation (iTEBD) algorithm and Bell-type inequalities, we investigate multi-partite quantum nonlocality in an infinite o…
Violation of Bell inequality in perfect translation invariant systems
Zhao-Yu Sun, Yu-Ying Wu, Hai-Lin Huang +2
Bell inequalities and nonlocality have been widely studied in one-dimensional quantum systems. As a kind of quantum correlation, it is expected that bipartite nonlocaity should be…
Bell inequality and nonlocality in a two-dimensional mixed spin systems
Z. Y. Sun, Y. Y. Wu, H. L. Huang +1
In this paper, we use Bell inequality and nonlocality to study the bipartite correlation in an exactly soluble two-dimensional mixed spin system. Bell inequality turns out to be a…
Odd-even effect of quantum discord and quantum phase transitions in the S=1/2 spin ladder with ring exchange
H. L. Huang, Z. Y. Sun, B. Wang
The singularity of quantum correlations, such as quantum entanglement(QE) and quantum discord(QD), has been widely regarded as a valuable indicator for quantum phase transition(QPT…